CN104182512A - Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates - Google Patents
Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates Download PDFInfo
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- CN104182512A CN104182512A CN201410413760.5A CN201410413760A CN104182512A CN 104182512 A CN104182512 A CN 104182512A CN 201410413760 A CN201410413760 A CN 201410413760A CN 104182512 A CN104182512 A CN 104182512A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012795 verification Methods 0.000 title claims abstract description 11
- 230000009466 transformation Effects 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 abstract description 2
- 238000011426 transformation method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013524 data verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
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Abstract
The invention relates to a transformation technique of two coordinate systems, discloses a transformation method of GPS (global positioning system) coordinates and local coordinates and aims to quickly transform GPS coordinate data into local coordinate data required by engineering applications. The method includes the steps of a, determining two known points A and B in a local coordinate system; b, connecting the points A and B into a straight line L; c, acquiring coordinate points A' and B' of the points A and B in a WGS84 (world geodetic system 1984) coordinate system by a GPS; d, connecting the points A' and B' into a straight line L'; e, calculating an included angle of the straight line L and the straight line L', namely a deviation angle of the local coordinate system and the WGS84 coordinate system; f, shifting the acquired GPS coordinates according to the deviation angle calculated in the step e in order to transform the GPS coordinates into local coordinates. In addition, the invention further provides a verification method of transformation of GPS coordinates and local coordinates. The methods are applicable to quick and effective transformation of GPS data into data actually required by engineering construction and applicable to accurate verification on the data.
Description
Technical field
The present invention relates to two kinds of switch technologies between coordinate system, be specifically related to the conversion of gps coordinate and local coordinate and to changing the verification method of rear correctness.
Background technology
In current engineering application, GPS is provided by the coordinate providing does not in most of the cases have practical significance, the coordinate that GPS obtains is WGS84 coordinate, and different coordinate systems is different geodetic level, different reference ellipsoids, therefore, data position on same map of the same point of two kinds of coordinate acquisitions is different.Be that point that GPS is received is added on the base map of Local coordinate system under normal circumstances, find the position of testee by comparison, brought trouble to real work like this.
Summary of the invention
Technical matters to be solved by this invention is: proposes conversion and the verification method of a kind of gps coordinate and local coordinate, realizes gps coordinate data are converted to the local coordinate data that engineering application needs fast, and to its accuracy of data verification after conversion.
The present invention solves the problems of the technologies described above adopted scheme:
The conversion method of gps coordinate and local coordinate, comprises the following steps:
A. under local coordinate system, determine two known point A, B;
B. A, 2 of B are connected into straight line L;
C. utilize GPS to obtain 2 respective coordinates point A ', B ' under WGS84 coordinate system of A, B;
D. A ', 2 of B ' are connected into straight line L ';
E. the angle between calculated line L and straight line L ', is the deviation angle between local coordinate system and WGS84 coordinate system;
F. in the time that gps coordinate is converted to local coordinate by needs, obtained gps coordinate is offset according to the deviation angle calculating in step e.
Concrete, the concrete grammar of the angle between the L of calculated line described in step e and straight line L ' is:
Obtain the air line distance between A, B at 2, obtain the air line distance between A ', B ', utilize the angle between Pythagorean theorem calculated line L and straight line L '.
In addition, the invention allows for the conversion verification method of a kind of gps coordinate and local coordinate, for verifying the accuracy of carrying out the data after coordinate conversion;
It comprises the following steps:
A. under local coordinate system, determine three known point C, D, E;
B. utilize the deviation angle between local coordinate system and WGS84 coordinate system to be offset these three known points, obtain the coordinate points C ' D ' E ' of these three known points correspondence under WGS84 coordinate system;
C. utilize GPS to obtain the coordinate figure of these three known points under WGS84 coordinate system;
The consistance of the coordinate figure of the C ' D ' E ' d. obtaining in the coordinate figure in comparison step c and step b.
The invention has the beneficial effects as follows: can realize the quick conversion between gps coordinate and local coordinate, make can effectively gps data be converted to actual needed data in engineering construction in practical engineering application; In addition, the present invention also verifies the accuracy of the deviation angle calculating, and is convenient to accurately find out fast the correspondence position of gps coordinate in local coordinate system.
Embodiment
The present invention is intended to propose conversion and the verification method of a kind of gps coordinate and local coordinate, and realize gps coordinate data are converted to the local coordinate data that engineering application needs fast, and to its accuracy of data verification after conversion.
Specific implementation comprises the conversion verification method of conversion method and gps coordinate and the local coordinate of gps coordinate and local coordinate, is specifically addressed below:
For the conversion method of gps coordinate and local coordinate, it comprises the following steps:
A. under local coordinate system, determine two known point A, B;
B. A, 2 of B are connected into straight line L;
C. utilize GPS to obtain 2 respective coordinates point A ', B ' under WGS84 coordinate system of A, B;
D. A ', 2 of B ' are connected into straight line L ';
E. the angle between calculated line L and straight line L ', is the deviation angle between local coordinate system and WGS84 coordinate system;
F. in the time that gps coordinate is converted to local coordinate by needs, obtained gps coordinate is offset according to the deviation angle calculating in step e.
Wherein, the concrete grammar of the angle between calculated line L described in step e and straight line L ' is:
Obtain the air line distance between A, B at 2, obtain the air line distance between A ', B ', utilize the angle between Pythagorean theorem calculated line L and straight line L ', this angle is actual is the angle of straight line L and straight line L ' extended line.
For the above-mentioned deviation angle obtaining is verified, the conversion verification method for gps coordinate and local coordinate in the present invention comprises following performing step:
A. under local coordinate system, determine three known point C, D, E;
B. utilize the deviation angle between local coordinate system and WGS84 coordinate system to be offset these three known points, obtain the coordinate points C ' D ' E ' of these three known points correspondence under WGS84 coordinate system;
C. utilize GPS to obtain the coordinate figure of these three known points under WGS84 coordinate system;
The consistance of the coordinate figure of the C ' D ' E ' d. obtaining in the coordinate figure in comparison step c and step b.
Compared with the method comparing with two traditional coordinate systems, the present invention adopted a kind of the most convenient and fast computing method solve two side-play amounts between coordinate system, make GPS obtain coordinate can calculate the physical location of testee under local coordinate system by set computing method.
Claims (2)
- The conversion method of 1.GPS coordinate and local coordinate, is characterized in that, comprises the following steps:A. under local coordinate system, determine two known point A, B;B. A, 2 of B are connected into straight line L;C. utilize GPS to obtain 2 respective coordinates point A ', B ' under WGS84 coordinate system of A, B;D. A ', 2 of B ' are connected into straight line L ';E. the angle between calculated line L and straight line L ', is the deviation angle between local coordinate system and WGS84 coordinate system;F. in the time that gps coordinate is converted to local coordinate by needs, obtained gps coordinate is offset according to the deviation angle calculating in step e.
- The conversion verification method of 2.GPS coordinate and local coordinate, for verifying the accuracy of carrying out the data after coordinate conversion, is characterized in that, comprises the following steps:A. under local coordinate system, determine three known point C, D, E;B. utilize the deviation angle between local coordinate system and WGS84 coordinate system to be offset these three known points, obtain the coordinate points C ' D ' E ' of these three known points correspondence under WGS84 coordinate system;C. utilize GPS to obtain the coordinate figure of these three known points under WGS84 coordinate system;The consistance of the coordinate figure of the C ' D ' E ' d. obtaining in the coordinate figure in comparison step c and step b.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410413760.5A CN104182512A (en) | 2014-08-20 | 2014-08-20 | Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates |
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| CN201410413760.5A CN104182512A (en) | 2014-08-20 | 2014-08-20 | Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106875485A (en) * | 2017-02-10 | 2017-06-20 | 中国电建集团成都勘测设计研究院有限公司 | Towards the live three-dimensional coordinate Establishing method that Hydroelectric Engineering Geology construction is edited and recorded |
| CN107977366A (en) * | 2016-10-21 | 2018-05-01 | 北京百度网讯科技有限公司 | Data output method, device and terminal for coordinate system |
| CN108416070A (en) * | 2018-05-10 | 2018-08-17 | 四川省冶地工程勘察设计有限公司 | A kind of method that geography information quickly introduces GIS-Geographic Information System |
| CN110490830A (en) * | 2019-08-22 | 2019-11-22 | 中国农业科学院农业信息研究所 | A kind of agricultural remote sensing method for correcting image and system |
| CN111239772A (en) * | 2020-03-10 | 2020-06-05 | 上海欧冶物流股份有限公司 | Positioning method and positioning system for target object in outdoor storage area |
| CN111553244A (en) * | 2020-04-24 | 2020-08-18 | 中国电建集团成都勘测设计研究院有限公司 | Water and soil conservation monitoring method based on automatic positioning and orienting technology |
| CN113484892A (en) * | 2021-06-30 | 2021-10-08 | 中国船舶重工集团公司第七一九研究所 | GNSS-based ship attitude calculation method and system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107977366A (en) * | 2016-10-21 | 2018-05-01 | 北京百度网讯科技有限公司 | Data output method, device and terminal for coordinate system |
| CN107977366B (en) * | 2016-10-21 | 2021-12-03 | 北京百度网讯科技有限公司 | Data output method and device for coordinate system and terminal |
| CN106875485A (en) * | 2017-02-10 | 2017-06-20 | 中国电建集团成都勘测设计研究院有限公司 | Towards the live three-dimensional coordinate Establishing method that Hydroelectric Engineering Geology construction is edited and recorded |
| CN106875485B (en) * | 2017-02-10 | 2020-09-01 | 中国电建集团成都勘测设计研究院有限公司 | Method for establishing site three-dimensional coordinate system for geological construction record of hydroelectric engineering |
| CN108416070A (en) * | 2018-05-10 | 2018-08-17 | 四川省冶地工程勘察设计有限公司 | A kind of method that geography information quickly introduces GIS-Geographic Information System |
| CN110490830A (en) * | 2019-08-22 | 2019-11-22 | 中国农业科学院农业信息研究所 | A kind of agricultural remote sensing method for correcting image and system |
| CN110490830B (en) * | 2019-08-22 | 2021-09-24 | 中国农业科学院农业信息研究所 | Agricultural remote sensing image correction method and system |
| CN111239772A (en) * | 2020-03-10 | 2020-06-05 | 上海欧冶物流股份有限公司 | Positioning method and positioning system for target object in outdoor storage area |
| CN111553244A (en) * | 2020-04-24 | 2020-08-18 | 中国电建集团成都勘测设计研究院有限公司 | Water and soil conservation monitoring method based on automatic positioning and orienting technology |
| CN111553244B (en) * | 2020-04-24 | 2023-05-26 | 中国电建集团成都勘测设计研究院有限公司 | Water and soil conservation monitoring method based on automatic positioning and orientation technology |
| CN113484892A (en) * | 2021-06-30 | 2021-10-08 | 中国船舶重工集团公司第七一九研究所 | GNSS-based ship attitude calculation method and system |
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