Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for switching coordinates of WGS84 ellipsoid and Clarke 80 ellipsoid

A WGS84, coordinate conversion technology, used in surveying and navigation, measuring devices, instruments, etc.

Inactive Publication Date: 2009-09-16
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of coordinate conversion under different reference ellipsoids in the field of geodesy, and propose a coordinate conversion method between a WGS84 ellipsoid and a Clarke80 ellipsoid, which can convert the projected coordinates under the WGS84 ellipsoid into a Clarke80 ellipsoid Projected coordinates under

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for switching coordinates of WGS84 ellipsoid and Clarke 80 ellipsoid
  • Method for switching coordinates of WGS84 ellipsoid and Clarke 80 ellipsoid
  • Method for switching coordinates of WGS84 ellipsoid and Clarke 80 ellipsoid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0067] Let the WGS84 geodetic coordinates of a certain point be: 34°33’51.99052” north latitude, 1°47’16.58107” west longitude, and 81.0 elevation.

[0068] (1) Set WGS84 ellipsoid parameters according to Table 1.

[0069] (2) Calculate relevant parameters according to formula 6:

[0070] e=0.0818192,

[0071] v=6385019.5996.

[0072] and according to Figure 4 Convert WGS84 geodetic coordinates to the following Cartesian coordinates:

[0073] X=5255497.7844,

[0074] Y=-164053.2992,

[0075] Z=3598227.0158.

[0076] (3) According to the 7 parameters shown in Table 3, the Cartesian coordinates of the WGS84 ellipsoid and the Cartesian coordinates of the Clarke80 ellipsoid, the result is:

[0077] X=5255653.1370,

[0078] Y=-163980.0394,

[0079] Z=3597915.5158.

[0080] (4) Set Clarke80 ellipsoid parameters according to Table 1.

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for converting coordinates of a WGS84 ellipsoid and a Clarke 80 ellipsoid, which belongs to the technical field of geodetic survey and geographic information and is used for solving the problem of converting lower coordinates of different ellipsoids in the field of the geodetic survey. The method comprises the following steps: firstly, performing reverse operations on a projection coordinate below the WGS84 ellipsoid to convert the projection coordinate into a geodetic coordinate below the WGS84 ellipsoid, and converting the geodetic coordinate into a Cartesian coordinate; secondly, using a 7-parameter method to achieve the conversions of Cartesian coordinates below the two ellipsoids so as to obtain the Cartesian coordinate below the Clarke 80 ellipsoid; and finally, converting the Cartesian coordinates into the geodetic coordinate of the Clarke 80 ellipsoid, and performing normal solution as required to operate so as to convert the geodetic coordinate of the Clarke 80 ellipsoid into a required projection coordinate. With the method, the precision up to 0.1 m can be obtained and can meet the needs of most users and occasions, thus the method can play a great role in the technical field of the geodetic survey and the geographic information and obtain good economic benefits.

Description

technical field [0001] The invention relates to the technical fields of geodetic surveying and geographical information, in particular to a method for transforming coordinates between a WGS84 ellipsoid and a Clarke80 ellipsoid, which is suitable for the needs of various coordinate transformations under the two ellipsoids. Background technique [0002] The coordinates of the carrier can be represented by different coordinate systems, and a point on the earth can be described by various coordinate systems, such as geodetic coordinates, Cartesian coordinates, and map projection coordinates. [0003] Different countries and regions use different ellipsoids and projection systems. For example, our country uses the Gauss-Kruger projection system under the 1954 ellipsoid (BJ54) in most cases, but many western countries use the 1984 world geodetic coordinates UTM projection system under the (World Geodical System-1984, WGS84). As an all-weather, all-round, real-time global position...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01C7/02G01B21/00
Inventor 王美玲付梦印刘彤张继伟肖烜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY