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Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates

A local coordinate and coordinate conversion technology, applied in the conversion field, can solve problems such as troubles, and achieve the effect of fast conversion, easy to find, accurate and fast find

Inactive Publication Date: 2014-12-03
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the points received by GPS are superimposed on the base map of the local coordinate system, and the location of the measured object is found by comparison, which brings trouble to the actual work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention aims to propose a conversion and verification method of GPS coordinates and local coordinates, realizes fast conversion of GPS coordinate data into local coordinate data required by engineering applications, and verifies the accuracy of the converted data.

[0022] The specific implementation plan includes the conversion method of GPS coordinates and local coordinates and the conversion verification method of GPS coordinates and local coordinates, which are described in detail below:

[0023] For the conversion method of GPS coordinates and local coordinates, it comprises the following steps:

[0024] a. Determine two known points A and B in the local coordinate system;

[0025] b. Connect the two points A and B into a straight line L;

[0026] c. Use GPS to obtain the corresponding coordinate points A' and B' of A and B in the WGS84 coordinate system;

[0027] d. Connect the two points A' and B' into a straight line L';

[0028] e. Calculate th...

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PUM

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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 [0001] The invention relates to conversion technology between two coordinate systems, in particular to conversion of GPS coordinates and local coordinates and a method for verifying correctness after conversion. Background technique [0002] In current engineering applications, the coordinates provided by GPS positioning have no practical significance in most cases. The coordinates obtained by GPS are WGS84 coordinates, and different coordinate systems are different geodetic datums and different reference ellipsoids. Therefore, the two The data of the same point obtained by the coordinates have different positions on the same map. Usually, the points received by the GPS are superimposed on the base map of the local coordinate system, and the location of the measured object is found by comparison, which brings trouble to the actual work. Contents of the invention [0003] The technical problem to be solved by the present invention is: to propose a conversio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06T3/00
CPCG06F16/29G06T3/20
Inventor 王仁坤邱向东尹习双刘金飞钟桂良赖刚刘永亮宋述军
Owner POWERCHINA CHENGDU ENG