CN114812497B - Method, device, equipment and storage medium for measuring elevation control network - Google Patents
Method, device, equipment and storage medium for measuring elevation control network Download PDFInfo
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- CN114812497B CN114812497B CN202210208398.2A CN202210208398A CN114812497B CN 114812497 B CN114812497 B CN 114812497B CN 202210208398 A CN202210208398 A CN 202210208398A CN 114812497 B CN114812497 B CN 114812497B
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The embodiment of the application discloses a measuring method, a measuring device and a measuring device for an elevation control network, wherein at least one pair of control points are distributed in the elevation control network; the method comprises the following steps: acquiring a height difference value of a first control point pair; the first control point pair is any one of the at least one pair of control points; the height difference comprises at least a first height difference and a second Gao Chazhi; the first height difference value and the second height difference value are height difference values measured based on different measuring devices; weighting the first high difference value and the second high difference value to obtain a comprehensive high difference value; performing adjustment processing on the comprehensive height difference value to obtain an error value; and under the condition that the error value is smaller than a preset threshold value, determining that the first control point pair meets the preset precision requirement.
Description
Technical Field
The present disclosure relates to the field of track control networks, and in particular, to a method, an apparatus, a device, and a storage medium for measuring a height control network.
Background
The track control network (CPIII) is a plane and elevation co-point three-dimensional control network distributed along a line, the plane is closed on a basic plane control network (CPI) or a line plane control network (CPII), the height Cheng Qi is closed on a line level base point, and the track control network (CPIII) is generally tested after the off-line engineering construction is completed and is a reference for track laying, operation and maintenance. The traditional CPIII elevation network is measured through relevant technical requirements such as second level measurement or first level measurement, but the precision requirement specified by the standard is difficult to reach because the influence of systematic errors such as earth curvature, atmospheric refraction and the like are not considered, and the requirement of high-speed magnetic levitation track construction is difficult to meet.
Disclosure of Invention
The embodiment of the application expects to provide a measuring method, a measuring device and a storage medium of an elevation control network.
The technical scheme of the application is realized as follows:
an embodiment of the present application provides a method for measuring an elevation control network, where at least one pair of control points are arranged in the elevation control network; the method comprises the following steps:
acquiring a height difference value of a first control point pair; the first control point pair is any one of the at least one pair of control points; the height difference comprises at least a first height difference and a second Gao Chazhi; the first height difference value and the second height difference value are height difference values measured based on different measuring devices;
weighting the first high difference value and the second high difference value to obtain a comprehensive high difference value;
performing adjustment processing on the comprehensive height difference value to obtain an error value;
and under the condition that the error value is smaller than a preset threshold value, determining that the first control point pair meets the preset precision requirement.
Optionally, the two control points in the first control point pair are respectively located on different sides of the elevation control network.
Optionally, the spacing between any two adjacent pairs of control points in the at least one pair of control points is the same.
Optionally, the obtaining the high difference value of the first control point pair includes:
acquiring the first high difference value of a first control point pair based on first measuring equipment;
and acquiring the second high difference value of the first control point pair based on a second measuring device.
Optionally, the method further comprises:
acquiring a first elevation of the first measuring device and a first control point and a second elevation of the first measuring device and a second control point respectively; the first control point and the second control point are two control points in the first control point pair;
the first elevation difference is determined based on the second elevation of the first elevation Cheng He.
Optionally, the method further comprises:
acquiring a third elevation of the second measuring equipment and the first control point and a fourth elevation of the second control point respectively;
the second elevation difference value is determined based on the third elevation and the fourth elevation.
Optionally, the weighting processing is performed on the first high difference value and the second high difference value to obtain an integrated high difference value, including:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight corresponding to the first measuring equipment and the second Gao Chazhi and the second weight corresponding to the second measuring equipment.
Optionally, the height difference value further includes a third height difference value measured based on a third measurement device and a fourth height difference value measured based on a fourth measurement device;
the step of weighting the first high difference value and the second high difference value to obtain a comprehensive high difference value further comprises the following steps:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight value corresponding to the first measuring equipment, the second Gao Chazhi and the second weight value corresponding to the second measuring equipment, the third high difference value and the third weight value corresponding to the third measuring equipment, and the fourth high difference value and the fourth weight value corresponding to the fourth measuring equipment.
Optionally, the distance between the first measuring device and the second measuring device and the first control point pair is smaller than the distance between the other measuring devices and the first control point pair.
Optionally, the measurement device comprises a laser tracker.
A second aspect of embodiments of the present application provides a measurement device for an elevation control network, the device comprising:
the acquisition module is used for acquiring the height difference value of the first control point pair; the first control point pair is any one of at least one pair of control points; the height difference comprises at least a first height difference and a second Gao Chazhi; the first height difference value and the second height difference value are height difference values measured based on different measuring devices;
the first processing module is used for carrying out weighting processing on the first high difference value and the second high difference value to obtain a comprehensive high difference value;
the second processing module is used for carrying out adjustment processing on the comprehensive high difference value to obtain an error value;
and the determining module is used for determining that the first control point pair meets the preset precision requirement under the condition that the error value is smaller than a preset threshold value.
Optionally, the two control points in the first control point pair are respectively located on different sides of the elevation control network.
Optionally, the spacing between any two adjacent pairs of control points in the at least one pair of control points is the same.
Optionally, the acquiring module is specifically configured to:
acquiring the first high difference value of a first control point pair based on first measuring equipment;
and acquiring the second high difference value of the first control point pair based on a second measuring device.
Optionally, the acquiring module is specifically configured to:
acquiring a first elevation of the first measuring device and a first control point and a second elevation of the first measuring device and a second control point respectively; the first control point and the second control point are two control points in the first control point pair;
the first elevation difference is determined based on the second elevation of the first elevation Cheng He.
Optionally, the acquiring module is further configured to:
acquiring a third elevation of the second measuring equipment and the first control point and a fourth elevation of the second control point respectively;
the second elevation difference value is determined based on the third elevation and the fourth elevation.
Optionally, the first processing module is specifically configured to:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight corresponding to the first measuring equipment and the second Gao Chazhi and the second weight corresponding to the second measuring equipment.
Optionally, the height difference value further includes a third height difference value measured based on a third measurement device and a fourth height difference value measured based on a fourth measurement device; the first processing module is further configured to:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight value corresponding to the first measuring equipment, the second Gao Chazhi and the second weight value corresponding to the second measuring equipment, the third high difference value and the third weight value corresponding to the third measuring equipment, and the fourth high difference value and the fourth weight value corresponding to the fourth measuring equipment.
Optionally, the distance between the first measuring device and the second measuring device and the first control point pair is smaller than the distance between the other measuring devices and the first control point pair.
Optionally, the measurement device comprises a laser tracker.
A third aspect of embodiments of the present application provides a measurement device for an elevation control network, the device including a memory and a processor, wherein instructions are stored in the memory;
the processor is configured to execute instructions stored in the memory, which instructions, when executed by the processor, implement the steps of the method according to the first aspect.
A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to the first aspect.
According to the measuring method, the measuring device, the measuring equipment and the storage medium of the elevation control network, a pair of control points in the elevation control network are measured through different measuring equipment respectively to obtain the first elevation difference value and the second elevation difference value related to the measured control point pair, the first elevation difference value and the second elevation difference value are weighted, so that the comprehensive elevation difference value of the measured control point pair is obtained, the influence of systematic errors such as earth curvature and atmospheric refraction is eliminated, the measuring precision is improved, and the elevation difference of the control point pair in the elevation control network is further ensured to meet the requirements of high-speed magnetic levitation track construction.
Drawings
Fig. 1 is a schematic diagram of control point layout in a CFIII elevation control network according to an embodiment of the present disclosure;
fig. 2 is a flow chart of a measurement method of an altitude control network according to an embodiment of the present application;
fig. 3 is a schematic diagram of measurement principle of obtaining a high difference value of a control point pair according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a mid-point elevation control network provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an elevation control network according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of an intersection elevation control network according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of yet another elevation control network according to an embodiment of the present disclosure;
fig. 8 is a flowchart illustrating a specific example of a measurement method according to an embodiment of the present application;
FIG. 9 is a schematic diagram of partial error statistics provided in an embodiment of the present application;
fig. 10 is a schematic structural diagram of an elevation control network measurement apparatus according to an embodiment of the present application;
fig. 11 is a schematic diagram of a hardware entity structure of an altitude control network measurement device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Furthermore, the drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only and not necessarily all steps are included. For example, some steps may be decomposed, and some steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating control point layout in a CFIII elevation control network according to an embodiment of the present application, wherein a distance between any two adjacent control points on the same side is X, typically, x=50 meters, two control points in the same pair of control points are respectively located on different sides of the elevation control network, the two control points are control points closest to each other in the elevation control network, and a distance between the two control points is Y, typically, y=11 meters. However, in the process of actually laying out control points, the positional relationship between the control points in the CFIII elevation control network, such as the elevation difference between the same pair of control points, is often difficult to meet the accuracy requirement specified by the specification due to the influence of various errors, and therefore, after laying out, accurate measurement is required to ensure the laying accuracy.
Referring to fig. 2, fig. 2 is a schematic flow chart of a measurement method of an elevation control network according to an embodiment of the present application, where the measurement method of an elevation control network according to the embodiment of the present application is applied to an elevation control network, and at least one pair of control points are arranged in the elevation control network; the method comprises the following steps:
s201, acquiring a height difference value of a first control point pair; the first control point pair is any one of at least one pair of control points; the high difference value includes at least a first high difference value and a second Gao Chazhi; the first height difference and the second height difference are height differences measured based on different measuring devices.
In this embodiment, two control points in the first control point pair are located on different sides of the elevation control network respectively, and the distances between any two adjacent control point pairs in at least one pair of control points are the same. The measuring device may comprise a laser tracker, an intelligent total station or the like, where the measuring device is preferably a laser tracker, i.e. the first and second height differences of the first control point are acquired by different laser trackers, respectively.
In some embodiments, obtaining the high difference value of the first control point pair includes:
acquiring a first elevation of the first measuring device and a first control point and a second elevation of the first measuring device and a second control point respectively; the first control point and the second control point are two control points in the first control point pair;
a first elevation difference is determined based on the first elevation and the second elevation.
In an example, as shown in fig. 3, fig. 3 is a schematic diagram of a measurement principle of obtaining a high difference value of a control point pair according to an embodiment of the present application, where a laser tracker located at an O point measures positions of target balls respectively located at a point a and a point B, and the positions of the target balls are the positions where the characterization control points are located. The point A can be measured respectively by a laser trackerSkew S corresponding to point B A And S is B And zenith distance alpha A And alpha B Accordingly, the difference in height between points a and B can be calculated by:
in formula (1), h AB Characterizing the high difference between points A and B, h OB Characterizing the elevation from the point O to the point B, h oA Characterizing the elevation from point O to point A, K A And K B The vertical refractive index of the atmosphere at two points A, B respectively, and R is the average curvature radius of the earth in the test area.
Here, the first elevation may be h oA The second elevation may be h OB The first elevation and the second elevation can be measured respectively through the data measured by the laser tracker, and then the first elevation difference value of the first control point pair is determined.
In another example, obtaining the high difference value of the first control point pair further includes:
acquiring a third elevation of the second measuring equipment and the first control point and a fourth elevation of the second control point respectively;
a second elevation difference value is determined based on the third elevation and the fourth elevation.
Here, the measurement principle is the same as the above example, wherein the second high difference value may or may not be equal to the first high difference value.
According to the embodiment, the first elevation of the first control point in the first control point pair and the second elevation of the second control point are measured through the measuring equipment, so that the first elevation difference value of the first control point pair is determined based on the first elevation and the second elevation, the influence of systematic errors such as earth curvature and atmospheric refraction is eliminated, and the measuring precision is improved.
In some embodiments, as shown in fig. 4, fig. 4 is a schematic diagram of a mid-point elevation control network according to an embodiment of the present application. Acquiring a height difference value of a first control point pair, including: acquiring a first high difference value of a first control point pair based on first measuring equipment; based on the second measurement device, a second altitude difference value of the first control point pair is obtained.
In this embodiment, CFIII-01 and CFIII-02 are one pair of control points, CFIII-03 and CFIII-04 are another pair of control points, CFIII-15 and CFIII-16 are another pair of control points, and the other control points are similar. The first pair of control points may be any of these pairs of control points. cz01, cz02 … … cz09 are respectively different laser trackers, for example, when the first control point pair is CFIII-03 and CFIII-04, a first high difference value of CFIII-03 and CFIII-04 can be obtained based on the measuring device cz02, and a second high difference value of CFIII-03 and CFIII-04 can be obtained based on the measuring device cz 03. Here, the height difference of the first control point pair is preferably acquired by a measuring device closest to the measured control point pair.
In an example, referring to fig. 5, fig. 5 is a schematic structural diagram of an elevation control network according to an embodiment of the present application. The control points on each side are interconnected as in the figure with odd numbered control points or even numbered control points. Each pair of control points corresponds to two different measuring devices, namely a first measuring device and a second measuring device, whereby the same pair of control points is measured by the first measuring device and the second measuring device, resulting in a first high difference value and a second high difference value. It should be noted that, the distance between the first measuring device and the second measuring device and the first control point pair is smaller than the distance between the other measuring devices and the first control point pair, and the distances are respectively located at two sides of the connecting line of the two control points in the first control point pair, so as to reduce the measuring error and improve the measuring precision.
In some embodiments, as shown in fig. 6, fig. 6 is a schematic diagram of an intersection elevation control network according to an embodiment of the present application. Acquiring a height difference value of a first control point pair, including: the first altitude difference of the first control point pair is obtained based on the first measurement device, the second Gao Chazhi of the first control point pair is obtained based on the second measurement device, the third altitude difference measured based on the third measurement device and the fourth altitude difference measured based on the fourth measurement device.
In this embodiment, the control point pairs CFIII-01 and CFIII-02, CFIII-15 and CFIII-16 located at two ends of the elevation control network correspond to three different measuring devices, for example, a first measuring device, a second measuring device and a second measuring device, and the first elevation difference value, the second elevation difference value Gao Chazhi and the third elevation difference value are obtained by measuring the two sets of control point pairs by the three different measuring devices. The other control points except the two sets of control point pairs respectively correspond to four different measuring devices, for example, a first measuring device, a second measuring device and a fourth measuring device, and the four different measuring devices respectively measure the two sets of control point pairs, so that a first high difference value, a second Gao Chazhi, a third high difference value and a fourth high difference value can be obtained.
In one example, referring to fig. 7, fig. 7 is a schematic structural diagram of yet another elevation control network according to an embodiment of the present application. The control points on each side are interconnected as in the figure with odd numbered control points or even numbered control points. Each pair of control points corresponds to three different measuring devices, or four different measuring devices, whereby a plurality of different height differences with respect to the same pair of control points can be measured by a plurality of different measuring devices.
S202, carrying out weighting processing on the first high difference value and the second high difference value to obtain a comprehensive high difference value.
In one example, the integrated high difference value is derived based on a first high difference value and a first weight value corresponding to a first measurement device, and a second Gao Chazhi and a second weight value corresponding to a second measurement device.
Specifically, let h 1 、h 2 A first difference in height obtained based on a first measuring device and a second difference in height Gao Chazhi, P obtained based on a second measuring device, respectively 1 、P 2 The weights corresponding to the first high difference value and the second high difference value respectively can obtain the comprehensive high difference value:
since the first measuring device and the second measuring device are independent of each other, the measurement error is obtained according to the error propagation law:
in the formula (3), the amino acid sequence of the compound,
the co-factors corresponding to the variance of the first high difference and the variance of the second high difference, respectively, take into account +.>
Thus, the above formula can be simplified as:
taking into account Q hh ＝P -1 Thus, there are:
P＝P 1 +P 2 (5)
in another example, the altitude difference further includes a third altitude difference measured based on a third measurement device and a fourth altitude difference measured based on a fourth measurement device.
The first high difference value and the second high difference value are weighted to obtain a comprehensive high difference value, and the method further comprises the following steps:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight value corresponding to the first measuring equipment, the second Gao Chazhi and the second weight value corresponding to the second measuring equipment, the third high difference value and the third weight value corresponding to the third measuring equipment, and the fourth high difference value and the fourth weight value corresponding to the fourth measuring equipment.
Specifically, the first measurement device, the second measurement device and the fourth measurement device are used for measuring the same group of control point pairs respectively to obtain a first high difference h 1 Second Gao Chazhi h 2 Third highest difference h 3 And a fourth difference h 4 Thus, a comprehensive height difference is obtained:
because the first measuring device, the second measuring device, the third measuring device and the fourth measuring device are independent of each other, according to the error propagation law, the measurement error is obtained:
in the formula (7), the amino acid sequence of the compound,
the corresponding covariates of the variance of the first high difference, the variance of the second high difference, the variance of the third high difference and the variance of the fourth high difference, respectively, take into account
Thus, the above formula can be simplified as:
taking into account Q hh ＝P -1 Thus, there are:
P＝P 1 +P 2 +P 3 +P 4 (9)
in this embodiment, an empirical weighting method is used to determine the weight of the high difference corresponding to each measurement device.
S203, carrying out adjustment processing on the comprehensive height difference value to obtain an error value.
Here, after the adjustment process is performed on the integrated altitude difference value, and calculation and statistics are performed, a plurality of types of error values, for example, accidental error per kilometer altitude difference, total error per kilometer altitude difference, altitude difference correction and adjacent point altitude difference error, can be obtained.
S204, under the condition that the error value is smaller than a preset threshold value, determining that the first control point pair meets the preset precision requirement.
For example, when the accuracy requirement of the error in the total error per kilometer of the height difference is 0.30mm (millimeter), and when the obtained corresponding error value is 0.20mm, the first control point pair can be determined to meet the preset accuracy requirement; when the accuracy requirement of the height difference correction is 80% and the height difference correction is smaller than 0.05mm, if the obtained corresponding error value is that the height difference correction is smaller than 0.05mm and is only 60%, the first control point pair can be determined to not meet the preset accuracy requirement, and retesting is needed.
In a specific embodiment, as shown in fig. 8, fig. 8 is a flowchart of a specific example of a measurement method provided in the embodiment of the present application, and specifically includes the following steps:
s810: a free station of the laser tracker; the elevations of the same pair of control points are measured by different laser trackers.
S820: obtaining a direct height difference; the observed quantity is carried out by the laser tracker, so that the height difference between the laser tracker and two control points in the control point pairs can be obtained.
S830: calculating an indirect height difference; and calculating the height difference between the two control points, namely the indirect height difference, based on the measured height differences between the laser tracker and the two control points in the control point pair.
S840: judging whether the indirect height difference is qualified or not; the indirect height differences measured by different laser trackers are compared, and if an indirect height difference with a larger value difference occurs, step S841 is executed. If the measured indirect altitude difference value is normal, step S850 is performed.
S841: processing the problem value; and removing the abnormal indirect height difference from the measured indirect height difference, and re-measuring the control point corresponding to the abnormal indirect height difference value.
S850: merging the indirect height differences to obtain a comprehensive height difference; and weighting a plurality of indirect height differences measured by different laser trackers to obtain a comprehensive height difference value.
S860: performing adjustment processing on the comprehensive height difference to determine an error value;
s870: verifying the error value; if the error value is smaller than the preset threshold, step S880 is performed; if the error value is not less than the preset threshold, step S871 is performed: processing the problem value and eliminating the data corresponding to the individual control point with overlarge error value
S880: and (5) ending.
In one example, as shown in fig. 9, fig. 9 is a schematic diagram of a partial error value statistics provided in an embodiment of the present application; after the pre-test accuracy of the CFIII Gao Chengwang (i.e. the step S840) meets the requirement, the adjustment calculation is performed on the CFIII equal level net, the intersection method and the middle-point method CFIII triangle Gao Chengwang respectively, and then the difference correction after adjustment of the three CFIII heights Cheng Wang and the error in the adjacent point difference are counted. Wherein the height difference corrections of the CFIII elevation net are all less than 0.1mm and the errors in adjacent point height differences are all less than 0.25mm, however, based on the conventional CFIII equal level net, the height difference corrections are only 37.5% in the range of [0,0.05), and correspondingly, the height difference corrections are 87.5% and 100% in the range of [0,0.05) respectively, measured by the intersection method and the midpoint method in the application. For errors in adjacent point height differences, the conventional CFIII equal level net can only reach the precision range of [0.05,0.25), and the intersection method measurement and the midpoint method measurement in the application can reach the precision range of [0,0.05).
Compared with a conventional CFIII equal level network, the measuring method of the elevation control network is higher in accuracy, and the height difference of control point pairs in the elevation control network can be ensured to meet the requirement of high-speed magnetic levitation track construction.
According to the measuring method of the elevation control network, a pair of control points in the elevation control network are measured through different measuring equipment, multiple groups of elevation difference values related to the measured control point pairs are obtained, the measured multiple groups of elevation difference values are weighted respectively, so that the comprehensive elevation difference values of the measured control point pairs are obtained, influences of systematic errors such as earth curvature and atmospheric refraction are eliminated, measuring precision is improved, the height difference of the control point pairs in the elevation control network is further ensured to meet the requirement of high-speed magnetic levitation track construction, and the measuring method provided by the application can enable the plane network and the elevation network to be measured simultaneously, improves measuring efficiency and reduces measuring cost.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an altitude control network measuring device 1000 according to an embodiment of the present application, where the device includes:
an obtaining module 1001, configured to obtain a height difference value of a first control point pair; the first control point pair is any one of at least one pair of control points; the high difference value includes at least a first high difference value and a second Gao Chazhi; the first height difference value and the second height difference value are measured based on different measuring devices;
a first processing module 1002, configured to perform a weighting process on the first high difference value and the second high difference value to obtain a comprehensive high difference value;
a second processing module 1003, configured to perform adjustment processing on the integrated high difference value to obtain an error value;
the determining module 1004 is configured to determine that the first control point pair meets a preset precision requirement if the error value is smaller than a preset threshold.
In some embodiments, the two control points in the first control point pair are each located on a different side of the elevation control system.
In some embodiments, the spacing between any adjacent two pairs of control points in at least one pair of control points is the same.
In some embodiments, the obtaining module 1001 is specifically configured to:
acquiring a first high difference value of a first control point pair based on first measuring equipment;
based on the second measurement device, a second altitude difference value of the first control point pair is obtained.
In some embodiments, the obtaining module 1001 is specifically configured to:
acquiring a first elevation of the first measuring device and a first control point and a second elevation of the first measuring device and a second control point respectively; the first control point and the second control point are two control points in the first control point pair;
a first elevation difference is determined based on the first elevation and the second elevation.
In some embodiments, the acquisition module 1001 is further to:
acquiring a third elevation of the second measuring equipment and the first control point and a fourth elevation of the second control point respectively;
a second elevation difference is determined based on the third elevation and the fourth elevation.
In some embodiments, the first processing module 1002 is specifically configured to:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight corresponding to the first measuring equipment and the second Gao Chazhi and the second weight corresponding to the second measuring equipment.
In some embodiments, the altitude differences further comprise a third altitude difference measured based on a third measurement device and a fourth altitude difference measured based on a fourth measurement device; the first processing module 1002 is further configured to:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight value corresponding to the first measuring equipment, the second Gao Chazhi and the second weight value corresponding to the second measuring equipment, the third high difference value and the third weight value corresponding to the third measuring equipment, and the fourth high difference value and the fourth weight value corresponding to the fourth measuring equipment.
In some embodiments, the distance between the first measuring device and the second measuring device and the first pair of control points is smaller than the distance between the other measuring devices and the first pair of control points.
In some embodiments, the measurement device comprises a laser tracker.
The description of the apparatus embodiments above is similar to that of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the device embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.
The embodiment of the application also provides a measuring device of the elevation control network, which comprises a memory and a processor, wherein the memory stores instructions; the processor is configured to execute instructions stored in the memory, and when the instructions are executed by the processor, the steps described in the method embodiments are implemented. Specific examples are described in the above method examples, and are not described in detail herein.
The embodiment of the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in a method for measuring an elevation control network provided in the above embodiment.
It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, please refer to the description of the method embodiments of the present application for understanding.
It should be noted that fig. 11 is a schematic diagram of a hardware entity structure of an altitude control network measurement device in the embodiment of the present application, and as shown in fig. 11, a hardware entity of an altitude control network measurement device 1100 includes: the processor 1101 and memory 1103, the measurement device 1100 of the elevation control network may optionally further comprise a communication interface 1102.
It is to be appreciated that the memory 1103 can be volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory 1103 described in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiment may be applied to the processor 1101 or implemented by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware in the processor 1101 or instructions in software. The processor 1101 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 1101 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium including memory 1103, and the processor 1101 reads information from the memory 1103 and performs the steps of the method in combination with the hardware.
In an exemplary embodiment, the measurement device 1100 of the elevation control network may be implemented by one or more application specific integrated circuits (ASICs, application Specific Integrated Circuit), DSPs, programmable logic devices (PLDs, programmable Logic Device), complex programmable logic devices (CPLDs, complex Programmable Logic Device), field programmable gate arrays (FPGAs, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCUs, micro Controller Unit), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
In the several embodiments provided in the present application, it should be understood that the disclosed methods, apparatuses, and devices may be implemented in other manners. The above-described embodiment of the apparatus is merely illustrative, and for example, the division of the units is merely a logic function division, and there may be other division manners in actual implementation, such as: multiple units or components may be combined or may be integrated into another observational quantity or some features may be omitted or not performed. In addition, the various components shown or discussed may be connected in an indirect coupling or communication via interfaces, devices, or units, which may be electrical, mechanical, or other forms.
The units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units; some or all of the units may be selected according to actual needs to achieve the object of the present embodiment.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the integrated units described in the embodiments of the present application may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical embodiments of the present application may be embodied essentially or in part in the form of a software product stored in a storage medium, including instructions for causing a classification device (which may be a personal computer, a server, or a network device, etc.) of a multi-view remote sensing image to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The measuring method, the measuring device and the computer storage medium of the elevation control network described in the embodiments of the present application are only examples of the embodiments described in the present application, but are not limited thereto, so long as the measuring method, the measuring device, the measuring equipment and the computer storage medium of the elevation control network are all within the protection scope of the present application.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (13)
1. The measuring method of the elevation control network is characterized in that at least one pair of control points are distributed in the elevation control network; the method comprises the following steps:
acquiring a height difference value of a first control point pair; the first control point pair is any one of the at least one pair of control points; the height difference comprises at least a first height difference and a second Gao Chazhi; the first height difference value and the second height difference value are height difference values measured based on different measuring devices;
wherein, the calculation formula of the high difference value is as follows:
a and B represent two control points of a pair of control points, h AB Characterizing the high difference between A and B, S A And S is B Respectively represent the tilt of A and the tilt of B measured at O by the same measuring equipment, alpha A And alpha B Respectively representing the zenith distance of A and the zenith distance of B measured at O by the same measuring device, K A And K B The vertical refractive index of the atmosphere at the position A and the vertical refractive index of the atmosphere at the position B are respectively represented, and R is the average curvature radius of the earth;
weighting the first high difference value and the second high difference value to obtain a comprehensive high difference value;
performing adjustment processing on the comprehensive height difference value to obtain an error value;
and under the condition that the error value is smaller than a preset threshold value, determining that the first control point pair meets the preset precision requirement.
2. The measurement method according to claim 1, wherein two control points of the first pair of control points are located on different sides of the elevation control network, respectively.
3. The measurement method according to claim 1, wherein a pitch between any adjacent two control point pairs of the at least one pair of control points is the same.
4. The measurement method of claim 1, wherein the obtaining the altitude difference of the first control point pair comprises:
acquiring the first high difference value of a first control point pair based on first measuring equipment;
and acquiring the second high difference value of the first control point pair based on a second measuring device.
5. The measurement method according to claim 1, characterized in that the method further comprises:
acquiring a first elevation of the first measuring device and a first control point and a second elevation of the first measuring device and a second control point respectively; the first control point and the second control point are two control points in the first control point pair;
the first elevation difference is determined based on the second elevation of the first elevation Cheng He.
6. The measurement method according to claim 5, characterized in that the method further comprises:
acquiring a third elevation of the second measuring equipment and the first control point and a fourth elevation of the second control point respectively;
the second elevation difference value is determined based on the third elevation and the fourth elevation.
7. The method of measuring of claim 4, wherein weighting the first high difference value and the second high difference value to obtain a composite high difference value comprises:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight corresponding to the first measuring equipment and the second Gao Chazhi and the second weight corresponding to the second measuring equipment.
8. The measurement method of claim 1, wherein the altitude difference further comprises a third altitude difference measured based on a third measurement device and a fourth altitude difference measured based on a fourth measurement device;
the step of weighting the first high difference value and the second high difference value to obtain a comprehensive high difference value further comprises the following steps:
and obtaining the comprehensive high difference value based on the first high difference value and the first weight value corresponding to the first measuring equipment, the second Gao Chazhi and the second weight value corresponding to the second measuring equipment, the third high difference value and the third weight value corresponding to the third measuring equipment, and the fourth high difference value and the fourth weight value corresponding to the fourth measuring equipment.
9. The measurement method of claim 4, wherein a distance between the first measurement device and the second measurement device and the first control point pair is smaller than a distance between the other measurement devices and the first control point pair.
10. The measurement method according to claim 1, wherein the measurement device comprises a laser tracker.
11. A measurement device for a height control network, the device comprising:
the acquisition module is used for acquiring the height difference value of the first control point pair; the first control point pair is any one of at least one pair of control points; the height difference comprises at least a first height difference and a second Gao Chazhi; the first height difference value and the second height difference value are height difference values measured based on different measuring devices;
wherein, the calculation formula of the high difference value is as follows:
a and B represent two control points of a pair of control points, h AB Characterizing the high difference between A and B, S A And S is B Respectively represent the tilt of A and the tilt of B measured at O by the same measuring equipment, alpha A And alpha B Respectively representing the zenith distance of A and the zenith distance of B measured at O by the same measuring device, K A And K B The vertical refractive index of the atmosphere at the position A and the vertical refractive index of the atmosphere at the position B are respectively represented, and R is the average curvature radius of the earth; the first processing module is used for carrying out weighting processing on the first high difference value and the second high difference value to obtain a comprehensive high difference value;
the second processing module is used for carrying out adjustment processing on the comprehensive high difference value to obtain an error value;
and the determining module is used for determining that the first control point pair meets the preset precision requirement under the condition that the error value is smaller than a preset threshold value.
12. The measuring equipment of the elevation control network is characterized by comprising a memory and a processor, wherein the memory stores instructions;
the processor is configured to execute instructions stored in the memory, which instructions, when executed by the processor, implement the steps of the method of any of claims 1 to 10.
13. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 10.
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| US8539685B2 (en) * | 2011-01-20 | 2013-09-24 | Trimble Navigation Limited | Integrated surveying and leveling |
| US9830509B2 (en) * | 2015-06-29 | 2017-11-28 | Nokia Technologies Oy | Method and apparatus for constructing a digital elevation model utilizing ground points captured by ground-based LiDAR |
| US10664849B2 (en) * | 2018-03-07 | 2020-05-26 | Qrisq Analytics, LLC | Automation assisted elevation certificate production system |
| CN110130168A (en) * | 2019-05-10 | 2019-08-16 | 西南交通大学 | A kind of railroad track control net triangulated height data correction processing method |
| CN110132229B (en) * | 2019-05-10 | 2021-06-25 | 西南交通大学 | Method for measuring and processing triangular elevation of railway track control network |
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