CN113671468A - Laser ranging precision calibration method and system - Google Patents
Laser ranging precision calibration method and system Download PDFInfo
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- CN113671468A CN113671468A CN202110945935.7A CN202110945935A CN113671468A CN 113671468 A CN113671468 A CN 113671468A CN 202110945935 A CN202110945935 A CN 202110945935A CN 113671468 A CN113671468 A CN 113671468A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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Abstract
The invention relates to a method and a system for calibrating laser ranging precision, wherein the method comprises the following steps of arranging a target, a total station reflecting prism, a total station host and a laser ranging machine according to a calibration distance, so that the arrangement distance between the laser ranging machine and the target and the arrangement distance between the total station host and the total station reflecting prism are equal to the calibration distance; the total station host machine aims at the total station reflection prism for distance measurement, and outputs a distance measurement value X1; the laser range finder aligns the target, performs range finding and outputs a range finding value Y1; comparing the ranging value X1 with the ranging value Y1 to obtain the ranging error of the laser ranging machine under the calibration distance and form a ranging error table; and correcting and compensating the laser range finder according to the range error table. The laser range finder is calibrated by using the station instrument, so that the range finding precision is accurately calibrated; in the calibration process, the center of the cross of the sighting telescope of the laser range finder is only required to be coincided with the center of the cross of the target, so the adjustment operation is simple and convenient.
Description
Technical Field
The invention relates to the field of laser ranging correction, in particular to a laser ranging precision calibration method and a laser ranging precision calibration system.
Background
The pulse laser distance measuring machine emits a pulse laser beam or a series of short pulse laser beams to a target when in work, the laser beam reflected by the target is received by a photoelectric element, and a timer measures the time from the emission to the reception of the laser beam and calculates the distance from an observer to the target. The laser range finder has the advantages of light weight, small volume, simple operation, high speed and accuracy, and the error is only one fifth to one hundred times of that of other optical range finders. With the development of science and technology, the requirement on the precision of laser ranging in some applications is higher and higher, and particularly, the laser ranging is used on weapons.
The pulse type laser distance measuring machine has the characteristics of high distance measuring repetition precision but low distance measuring absolute precision. And the experimental result shows that the difference between the measured value and the actual distance is not fixed for the targets with different distances by the pulse type laser distance measuring machine.
The pulse laser ranging high-precision calibration system based on the total station provided by the existing scheme utilizes the total station and the target to carry out laser ranging calibration on a laser range finder, wherein the station, the target and the laser range finder are distributed in a triangular shape, the angles of the laser range finder and the total station need to be adjusted repeatedly in the measuring process so as to ensure that the cross center of a sighting telescope of the laser range finder coincides with the cross center of the target, the total station needs to measure the emitting window and the cross center of the target of the laser range finder respectively, so that one distance position point needs to be measured for three times by adjusting the angle, and the adjusting and testing steps are complex.
Disclosure of Invention
The invention aims to provide a laser ranging precision calibration method and a laser ranging precision calibration system, which are simple in adjustment and test steps and high in calibration precision.
The technical scheme for solving the technical problems is as follows: a method for calibrating the laser distance measuring precision of a laser distance measuring machine by using a target, a total station reflection prism and a total station host comprises the following steps,
s1, arranging the target, the total station reflection prism, the total station host and the laser range finder according to the set calibration distances, so that the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal to the calibration distances;
s2, starting the total station host, adjusting the total station host to align to the total station reflection prism and carry out multiple distance measurement to obtain multiple first distance measurement values, and taking the average value of the multiple first distance measurement values as a distance measurement value X1; starting the laser range finder, adjusting the laser range finder to align the target and carry out range finding for multiple times to obtain multiple second range finding values, and taking the average value of the multiple second range finding values as a range finding value Y1;
s3, comparing the ranging value X1 with the ranging value Y1 to obtain a ranging error of the laser range finder at the calibrated distance;
s4, adjusting the calibration distance for multiple times, circularly executing the steps S1 to S3 in sequence, obtaining the ranging errors of the laser ranging machine under multiple different calibration distances, and combining the ranging errors of the laser ranging machine under multiple different calibration distances to form a ranging error table;
and S5, performing correction compensation on the laser range finder according to the range error table, and completing laser range finding precision calibration of the laser range finder.
The invention has the beneficial effects that: the invention utilizes the millimeter-sized total station for measuring the distance precision to assist in calibrating the laser range finder, the error of the measured actual value is small, the accuracy of the error meter is high, the calibration of the distance measurement precision is more accurate, and the laser distance measurement precision is 0.1m after calibration; in addition, the target, the total station reflecting prism, the total station host and the laser range finder are distributed in a quadrilateral shape, and in the calibration process, the center of the cross of the sighting telescope of the laser range finder is only required to be coincident with the center of the cross of the target, so that the adjustment operation is simple and convenient.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, after the step of S5, the method further comprises the following steps,
s6, adjusting the laser range finder after correction and compensation to align the target under the calibration distance and carry out range finding for multiple times to obtain multiple third range finding values, and taking the average value of the multiple third range finding values as a range finding value Y2;
and S7, comparing the ranging value X1 and the ranging value Y2 obtained under the same calibration distance, if the difference value between the ranging value X1 and the ranging value Y2 is within a preset error range, the calibration is successful, otherwise, the calibration is failed.
Further, the ranging error of the laser rangefinder at the calibration distance is specifically the difference between the ranging value X1 and the ranging value Y1, and the specific process of forming the ranging error table in S4 is,
taking the distance measurement error of the laser distance measuring machine under the calibration distance as a correction compensation value of the laser distance measuring machine under the calibration distance;
corresponding the correction compensation value of the laser range finder at the calibration distance to a second range value of the laser range finder at the calibration distance to form a corresponding relation between the second range value of the laser range finder at the calibration distance and the correction compensation value;
and combining the corresponding relations of the second ranging values and the correction compensation values of the laser range finder under a plurality of different calibration distances to form the ranging error table.
Further, in S5, specifically,
starting the laser range finder, adjusting the laser range finder to align to a target to be measured and carrying out range finding to obtain an original laser range finding value;
searching in the ranging error table according to the original ranging value, and finding out a second ranging value matched with the original ranging value;
and based on a correction compensation value corresponding to a second ranging value matched with the original ranging value, correcting and compensating the original laser ranging value through a preset correction compensation algorithm, and outputting the laser ranging value after correction and compensation.
Further, in S1, the laser rangefinder and the total station host are at the same level.
The beneficial effect of adopting the further scheme is as follows: the invention emphasizes that the height of the total station main frame is consistent with that of the laser distance measuring machine, the accuracy of the actual distance measurement value can be ensured, and the calibration precision is further ensured.
Further, in S1, the laser rangefinder, the target, the total station host, and the total station reflection prism are located on four vertices of a rectangle, a straight line where the laser rangefinder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser rangefinder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
Further, in S4, after the calibration distance is adjusted, arranging the target, the total station reflection prism, the total station host, and the laser distance measuring machine on the basis of S1;
the specific method for arranging the target, the total station reflection prism, the total station host and the laser range finder on the basis of the step S1 is,
keeping the laser range finder and the total station host still, adjusting the positions of the target and the total station reflection prism respectively, so that the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
The beneficial effect of adopting the further scheme is that: the laser range finder, the total station host, the target and the total station reflection prism are distributed in a rectangular shape, when the calibration distance is adjusted, the laser range finder and the total station host are fixed in position, the positions of the target and the total station reflection prism only need to be adjusted, the coincidence of the cross center of the sighting telescope of the laser range finder and the cross center of the target is ensured, and the operation is simple and convenient.
Further, the total station reflection prism is specifically a triangular prism.
Based on the laser ranging precision calibration method, the invention also provides a laser ranging precision calibration system.
A laser distance measurement precision calibration system is applied to the laser distance measurement precision calibration method and used for calibrating the laser distance measurement precision of a laser distance measuring machine in a simple fire control sighting device, and comprises a target, a total station reflection prism, a total station host and a data comparison and analysis module, wherein a distance measurement precision compensation module connected with the laser distance measuring machine is further arranged in the simple fire control sighting device; the laser range finder and the total station host are connected with the ranging precision compensation module through the data comparison and analysis module; the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal and adjustable and equal to a calibration distance;
the total station host is used for measuring a first distance measurement value between the total station host and the total station reflection prism at the calibration distance and outputting a distance measurement value X1;
the laser range finder is used for measuring a second range finding value between the laser range finder and the target at the calibration distance and outputting a range finding value Y1;
the data comparison and analysis module is used for comparing the ranging value X1 with the ranging value Y1 to obtain the ranging error of the laser ranging machine under the calibration distance, and forming a ranging error table according to the ranging errors of the laser ranging machine under a plurality of different calibration distances;
and the distance measurement precision compensation module is used for correcting and compensating the laser distance measuring machine according to the distance measurement error table to realize laser distance measurement precision calibration.
The invention has the beneficial effects that: the invention utilizes the millimeter-sized total station for measuring the distance precision to assist in calibrating the laser range finder, the error of the measured actual value is small, the accuracy of the error meter is high, the calibration of the distance measurement precision is more accurate, and the laser distance measurement precision is 0.1m after calibration; in addition, the target, the total station reflecting prism, the total station host and the laser range finder are distributed in a quadrilateral shape, and in the calibration process, the center of the cross of the sighting telescope of the laser range finder is only required to be coincident with the center of the cross of the target, so that the adjustment operation is simple and convenient.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the laser range finder and the total station host are at the same horizontal height;
and/or the presence of a gas in the gas,
the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
The beneficial effect of adopting the further scheme is that: the invention emphasizes that the height of the total station host is consistent with the height of the laser distance measuring machine, thus ensuring the accuracy of the actual distance measurement value and further ensuring the calibration precision; the laser range finder, the total station host, the target and the total station reflection prism are distributed in a rectangular shape, when the calibration distance is adjusted, the laser range finder and the total station host are fixed in position, the positions of the target and the total station reflection prism only need to be adjusted, the coincidence of the cross center of the sighting telescope of the laser range finder and the cross center of the target is ensured, and the operation is simple and convenient.
Drawings
FIG. 1 is a flow chart of a laser ranging accuracy calibration method according to the present invention;
fig. 2 is a block diagram of a laser ranging accuracy calibration system according to the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a method for calibrating laser ranging precision by using a target, a total station reflection prism and a total station host to calibrate the laser ranging precision of a laser ranging machine comprises the following steps,
and S1, arranging the target, the total station reflection prism, the total station host and the laser range finder according to the set calibration distance, so that the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal to the calibration distance.
In this particular embodiment:
the total station reflection prism is specifically a triangular prism; the target is specifically an army green target, and the size of the target is 2.3m multiplied by 2.3 m; the precision of total powerstation host computer is millimeter level.
The laser range finder and the total station host are at the same horizontal height. The invention emphasizes that the height of the total station main frame is consistent with that of the laser distance measuring machine, the accuracy of the actual distance measurement value can be ensured, and the calibration precision is further ensured.
The laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
For example, points a1, a2, B2 and B1 are the four vertices of a rectangle, respectively, the target is erected at point a1, the total station reflection prism is erected at point a2, and the laser rangefinder is erected at point B1; and erecting a total station host at a point B2.
S2, starting the total station host, adjusting the total station host to align to the total station reflection prism and carry out multiple distance measurement to obtain multiple first distance measurement values, and taking the average value of the multiple first distance measurement values as a distance measurement value X1; and starting the laser range finder, adjusting the laser range finder to align the target and carry out range finding for multiple times to obtain multiple second range finding values, and taking the average value of the multiple second range finding values as a range finding value Y1.
In this particular embodiment:
the number of times that the total station host machine aligns with the total station reflection prism to perform ranging can be set as 100 times, and the number of times that the laser range finder aligns with the target to perform ranging can be set as 100 times; the ranging times of the total station host and the laser range finder can be reasonably set according to needs and are not limited to 100 times; of course, the more the number of times of ranging, the more accurate the ranging values X1 and Y1.
Adjusting the laser range finder to align the target specifically includes adjusting the laser range finder to make the center of the cross of the sighting telescope of the optical range finder coincide with the center of the cross of the target.
And S3, comparing the ranging value X1 with the ranging value Y1 to obtain the ranging error of the laser range finder at the calibrated distance.
In this particular embodiment:
the precision of the total station host is millimeter level, so that the measurement value of the total station under the calibration distance can be used as the theoretical value of the calibration distance, and higher calibration precision can be realized.
The ranging error of the laser range finder at the calibrated distance is specifically a difference (X1-Y1) between the ranging value X1 and the ranging value Y1, wherein the numerical unit of X1-Y1 is meter, and 1 bit behind the decimal point is reserved by adopting a rounding method.
And S4, adjusting the calibration distance for multiple times, sequentially and circularly executing the steps S1 to S3, obtaining the ranging errors of the laser ranging machine under multiple different calibration distances, and combining the ranging errors of the laser ranging machine under multiple different calibration distances to form a ranging error table.
In this particular embodiment:
after the calibration distance is adjusted, arranging the target, the total station reflection prism, the total station host and the laser range finder on the basis of the step S1;
the specific method for arranging the target, the total station reflection prism, the total station host and the laser range finder on the basis of the step S1 is,
keeping the laser range finder and the total station host still, adjusting the positions of the target and the total station reflection prism respectively, so that the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
For example, keeping the laser range finder erected at point B1 stationary, and keeping the total station main machine erected at point B2 stationary, moving the target from point a1 to point A3, moving the total station reflection prism from point a2 to point a4, and the graph formed by B1, B2, a4, and A3 is a rectangle. Therefore, the arrangement distance between the laser range finder and the target and the arrangement distance between the total station main machine and the total station reflection prism can be guaranteed to be equal and equal to the calibration distance.
And adjusting the positions of the target and the total station reflecting prism to traverse different calibration distances. The concrete expression is as follows: at the distances of 200m, 400m, 600m, 800m, 1000m, 1300m, 1600m, 1900m, 2000m, 2400m, 2800m, 3000m, 3500m, 4000m (the calibration distance selected this time is a specific calibration scheme confirmed according to the performance of the product, different products can be calibrated by selecting different calibration distances according to different schemes), respectively setting the test points to calibrate in sequence until the product meets the precision requirement of each distance segment in the performance.
The laser range finder, the total station host, the target and the total station reflection prism are distributed in a rectangular shape, when the calibration distance is adjusted, the laser range finder and the total station host are fixed in position, the positions of the target and the total station reflection prism only need to be adjusted, the coincidence of the cross center of the sighting telescope of the laser range finder and the cross center of the target is ensured, and the operation is simple and convenient.
The specific process of forming the ranging error table in S4 is,
taking the distance measurement error of the laser distance measuring machine under the calibration distance as a correction compensation value of the laser distance measuring machine under the calibration distance;
corresponding the correction compensation value of the laser range finder at the calibration distance to a second range value of the laser range finder at the calibration distance to form a corresponding relation between the second range value of the laser range finder at the calibration distance and the correction compensation value;
and combining the corresponding relations of the second ranging values and the correction compensation values of the laser range finder under a plurality of different calibration distances to form the ranging error table.
S5, correcting and compensating the laser range finder according to the range error table, and completing laser range finding precision calibration of the laser range finder;
in this particular embodiment: specifically, the step S5 is,
starting the laser range finder, adjusting the laser range finder to align to a target to be measured and carrying out range finding to obtain an original laser range finding value;
searching in the ranging error table according to the original ranging value, and finding out a second ranging value matched with the original ranging value;
and based on a correction compensation value corresponding to a second ranging value matched with the original ranging value, correcting and compensating the original laser ranging value through a preset correction compensation algorithm, and outputting the laser ranging value after correction and compensation.
And S6, adjusting the laser range finder after correction and compensation to align the target under the calibration distance and carry out range finding for multiple times to obtain multiple third range finding values, and taking the average value of the multiple third range finding values as a range finding value Y2.
In this particular embodiment:
the third distance measurement value is the output distance measurement value of the laser distance measuring machine after correction and compensation.
And S7, comparing the ranging value X1 and the ranging value Y2 obtained under the same calibration distance, if the difference value between the ranging value X1 and the ranging value Y2 is within a preset error range, the calibration is successful, otherwise, the calibration is failed.
In this particular embodiment:
the preset error range may be set to [ -0.1,0.1 ]. For example, if X1-Y2 ∈ [ -0.1,0.1] m, the calibration is successful. If the calibration fails, the calibration is performed again by using the steps S1-S5.
Based on the laser ranging precision calibration method, the invention also provides a laser ranging precision calibration system.
As shown in fig. 2, a laser distance measurement precision calibration system, applied to the laser distance measurement precision calibration method described above, is used for calibrating the laser distance measurement precision of a laser distance measuring machine in a simple fire control sighting device, and includes a target, a total station reflection prism, a total station host, and a data comparison and analysis module, where the simple fire control sighting device is further provided with a distance measurement precision compensation module connected with the laser distance measuring machine; the laser range finder and the total station host are connected with the ranging precision compensation module through the data comparison and analysis module; the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal and adjustable and equal to a calibration distance;
the total station host is used for measuring a first distance measurement value between the total station host and the total station reflection prism at the calibration distance and outputting a distance measurement value X1;
the laser range finder is used for measuring a second range finding value between the laser range finder and the target at the calibration distance and outputting a range finding value Y1;
the data comparison and analysis module is used for comparing the ranging value X1 with the ranging value Y1 to obtain the ranging error of the laser ranging machine under the calibration distance, and forming a ranging error table according to the ranging errors of the laser ranging machine under a plurality of different calibration distances;
and the distance measurement precision compensation module is used for correcting and compensating the laser distance measuring machine according to the distance measurement error table to realize laser distance measurement precision calibration.
In this specific embodiment, the laser range finder and the total station host are at the same level;
and/or the presence of a gas in the gas,
the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
The invention utilizes the millimeter-sized total station for measuring the distance precision to assist in calibrating the laser range finder, the error of the measured actual value is small, the accuracy of the error meter is high, the calibration of the distance measurement precision is more accurate, and the laser distance measurement precision is 0.1m after calibration; in addition, the target, the total station reflecting prism, the total station host and the laser range finder are distributed in a quadrilateral (specifically rectangular) shape, and in the calibration process, only the center of the cross of the sighting telescope of the laser range finder is required to be coincident with the center of the cross of the target, so that the adjustment operation is simple and convenient. The calibration method and the system have the advantages of strong practicability, simple design, strong transportability and high calibration precision.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A laser ranging precision calibration method is characterized in that: the method for calibrating the laser ranging precision of the laser ranging machine by utilizing the target, the total station reflecting prism and the total station host comprises the following steps,
s1, arranging the target, the total station reflection prism, the total station host and the laser range finder according to the set calibration distances, so that the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal to the calibration distances;
s2, starting the total station host, adjusting the total station host to align to the total station reflection prism and carry out multiple distance measurement to obtain multiple first distance measurement values, and taking the average value of the multiple first distance measurement values as a distance measurement value X1; starting the laser range finder, adjusting the laser range finder to align the target and carry out range finding for multiple times to obtain multiple second range finding values, and taking the average value of the multiple second range finding values as a range finding value Y1;
s3, comparing the ranging value X1 with the ranging value Y1 to obtain a ranging error of the laser range finder at the calibrated distance;
s4, adjusting the calibration distance for multiple times, circularly executing the steps S1 to S3 in sequence, obtaining the ranging errors of the laser ranging machine under multiple different calibration distances, and combining the ranging errors of the laser ranging machine under multiple different calibration distances to form a ranging error table;
and S5, performing correction compensation on the laser range finder according to the range error table, and completing laser range finding precision calibration of the laser range finder.
2. The laser ranging accuracy calibration method according to claim 1, characterized in that: after the step of S5, the method further comprises the following steps,
s6, adjusting the laser range finder after correction and compensation to align the target under the calibration distance and carry out range finding for multiple times to obtain multiple third range finding values, and taking the average value of the multiple third range finding values as a range finding value Y2;
and S7, comparing the ranging value X1 and the ranging value Y2 obtained under the same calibration distance, if the difference value between the ranging value X1 and the ranging value Y2 is within a preset error range, the calibration is successful, otherwise, the calibration is failed.
3. The laser ranging accuracy calibration method according to claim 1, characterized in that: the ranging error of the laser rangefinder at the calibration distance is specifically the difference between the ranging value X1 and the ranging value Y1, and the specific process of forming the ranging error table in S4 is,
taking the distance measurement error of the laser distance measuring machine under the calibration distance as a correction compensation value of the laser distance measuring machine under the calibration distance;
corresponding the correction compensation value of the laser range finder at the calibration distance to a second range value of the laser range finder at the calibration distance to form a corresponding relation between the second range value of the laser range finder at the calibration distance and the correction compensation value;
and combining the corresponding relations of the second ranging values and the correction compensation values of the laser range finder under a plurality of different calibration distances to form the ranging error table.
4. The laser ranging accuracy calibration method according to claim 3, characterized in that: specifically, the step S5 is,
starting the laser range finder, adjusting the laser range finder to align to a target to be measured and carrying out range finding to obtain an original laser range finding value;
searching in the ranging error table according to the original ranging value, and finding out a second ranging value matched with the original ranging value;
and based on a correction compensation value corresponding to a second ranging value matched with the original ranging value, correcting and compensating the original laser ranging value through a preset correction compensation algorithm, and outputting the laser ranging value after correction and compensation.
5. The laser ranging accuracy calibration method according to any one of claims 1 to 4, characterized in that: in S1, the laser rangefinder and the total station host are at the same level.
6. The laser ranging accuracy calibration method according to any one of claims 1 to 4, characterized in that: in S1, the laser rangefinder, the target, the total station host, and the total station reflection prism are located on four vertices of a rectangle, a straight line where the laser rangefinder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser rangefinder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
7. The laser ranging accuracy calibration method according to claim 6, characterized in that: in S4, after adjusting the calibration distance, arranging the target, the total station reflection prism, the total station host, and the laser range finder on the basis of S1;
the specific method for arranging the target, the total station reflection prism, the total station host and the laser range finder on the basis of the step S1 is,
keeping the laser range finder and the total station host still, adjusting the positions of the target and the total station reflection prism respectively, so that the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
8. The laser ranging accuracy calibration method according to any one of claims 1 to 4, characterized in that: the total station reflection prism is specifically a triangular prism.
9. The utility model provides a laser rangefinder precision calibration system which characterized in that: the laser ranging precision calibration method applied to any one of claims 1 to 8, is used for calibrating the laser ranging precision of a laser ranging machine in a simple fire control sighting device, and comprises a target, a total station reflection prism, a total station host and a data comparison and analysis module, wherein a ranging precision compensation module connected with the laser ranging machine is further arranged in the simple fire control sighting device; the laser range finder and the total station host are connected with the ranging precision compensation module through the data comparison and analysis module; the arrangement distance between the laser range finder and the target and the arrangement distance between the total station host and the total station reflection prism are equal and adjustable and equal to a calibration distance;
the total station host is used for measuring a first distance measurement value between the total station host and the total station reflection prism at the calibration distance and outputting a distance measurement value X1;
the laser range finder is used for measuring a second range finding value between the laser range finder and the target at the calibration distance and outputting a range finding value Y1;
the data comparison and analysis module is used for comparing the ranging value X1 with the ranging value Y1 to obtain the ranging error of the laser ranging machine under the calibration distance, and forming a ranging error table according to the ranging errors of the laser ranging machine under a plurality of different calibration distances;
and the distance measurement precision compensation module is used for correcting and compensating the laser distance measuring machine according to the distance measurement error table to realize laser distance measurement precision calibration.
10. The laser ranging accuracy calibration system according to claim 9, wherein: the laser range finder and the total station host are at the same horizontal height;
and/or the presence of a gas in the gas,
the laser range finder, the target, the total station host and the total station reflection prism are located on four vertexes of a rectangle, a straight line where the laser range finder and the target are located is parallel to a straight line where the total station host and the total station reflection prism are located, and a straight line where the laser range finder and the total station host are located is parallel to a straight line where the target and the total station reflection prism are located.
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