測量坐標(biāo)系統(tǒng)轉(zhuǎn)換方法研究與實現(xiàn)
[Abstract]:Because of the historical reasons, different countries and regions adopt different reference ellipsoid, so different geodetic coordinate system will appear. In the same country or region, the reference ellipsoid has been changed for some reasons at different historical stages, and different geodetic coordinates will also appear. At present, the geodetic control points used in surveying, engineering design, engineering planning and other applications in China are generally based on Beijing 54 coordinate system or Xi'an 80 coordinate system. How to convert the existing survey results between Beijing 54 coordinate system, Xi'an 80 coordinate system and local independent coordinate system, and finally convert them to 2000 national geodetic coordinate system, so as to realize the sharing of geographical information and avoid repeated construction. Reducing the waste of resources is a difficult problem to be solved. The conversion relationship between different coordinate systems is studied, and the influencing factors are analyzed, so as to realize the high-precision transformation between various coordinate systems. To ensure that the surveying and mapping results can be accurately transferred to the target coordinate system and to maximize the use of existing surveying and mapping results and data. The main work of this paper is as follows: (1) starting from the basic theory of ellipsoid of the earth, the coordinate system is simply classified, and several kinds of coordinate systems commonly used in our country are introduced. The methods to realize coordinate system transformation are described. (2) the influence of common points on coordinate conversion accuracy is studied in view of the inconsistency of coordinate systems in local and engineering applications in China. The number of common points in a local area is studied by an engineering example. The influence of common point distribution and common point precision on coordinate conversion accuracy is discussed. (3) two models of coordinate transformation from WGS-84 coordinate system to the common reference coordinate system in China are studied. The plane transformation model and the spatial transformation model are used to verify the two models. (4) on this basis, a set of coordinate system transformation software is designed, which can realize coordinate transformation in different forms. Taking Yulin as an example, the transformation of local independent coordinate system, Beijing 54 coordinate system and Xi'an 80 coordinate system is designed. The software interface design is simple and friendly, the operation is simple.
【學(xué)位授予單位】:長安大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:P226.3
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