【正文】 bal integration, of surveying and mapping material form a unified and standard requirement, coordinate system of unified is one of the hand. Now countries adopt of coordinate system has Beijing 54 coordinate system, xian 80 coordinate system, WGS84 coordinate system, the national 2000 coordinate system, and the local coordinate system, they choose different frame of reference ellipsoid, through the different coordinate conversion between to meet different demand of engineering measurement. In the same coordinate system and the coordinates of different means, such as the earth coordinate, space rectangular, plane coordinates. The transformation between different coordinate system, the same coordinate conversion between different coordinates, will use their corresponding transformation model for conversion. The interaction between the different coordinate system transformation, this paper mainly adopts three model, that is, three parameters model, four parameter model and seven parameter model. The same coordinate coordinate transformation, through the selection of the corresponding reference by the transformation model of the corresponding ellipsoid for conversion. Coordinate conversion of data processing plex, model parameter calculation involved in least square principle and matrix putation, so use puter coordinate transformation, both to save time, and can improve the accuracy of the calculation results. This paper based on MATLAB platform of coordinate transformation and write program design coordinate transformation system user interface, use of MATLAB strong matrix operation ability and rich function, can facilitate quickly realize the coordinate transformation.Keywords:coordinate, coordinate transformation, the parameters of model, MATLABⅠ目 錄1目 錄摘 要..................................................................................................................... Ⅰ ABSTRACT（英文摘要）..................................................................................... Ⅱ 目 錄...................................................................................................................... Ⅲ 第一章 引 言........................................................................................................... 1 研究的背景及意義........................................................................................ 1 坐標系間轉換的研究現(xiàn)狀............................................................................ 2 研究的內(nèi)容和目標........................................................................................ 2 第二章 大地測量坐標系統(tǒng)................................................................................... 3 地球表面、大地水準面和橢球體................................................................ 3 三種常用坐標................................................................................................ 6 空間坐標................................................................................................. 6 大地坐標................................................................................................. 8 平面坐標................................................................................................. 8 基準................................................................................................................ 9 常用坐標系................................................................................................... 10 1954年北京坐標系................................................................................ 10 1980年國家坐標系................................................................................ 10 WGS84坐標系...................................................................................... 11 2000國家大地坐標系............................................................................. 11 地方獨立坐標系.................................................................................... 12第三章 坐標轉換的理論及其方法........................................................................ 13 坐標轉換模型............................................................................................... 13 三參數(shù)模型............................................................................................ 13 四參數(shù)模型............................................................................................ 13 七參數(shù)模型............................................................................................ 14 坐標轉換中參數(shù)的求解方法....................................................................... 16 三點法.................................................................................................... 16 多點法.................................................................................................... 16 大地坐標與空間直角坐標間的轉換........................................................... 17 大地坐標轉換成空間直角坐標............................................................ 17 空間直角坐標轉換成大地坐標............................................................ 17 第四章 坐標轉換系統(tǒng)設計及其實現(xiàn)............................................................... 18 MATLAB簡介............................................................................................. 18 .................................................... 19 系統(tǒng)結構與功能設計................................................................................. 20 總體功能設計...................................................................................... 20 系統(tǒng)設計算法框圖.............................................................................. 21 系統(tǒng)界面設計............................................................................................. 23 第五章 坐標轉換系統(tǒng)程序與實例檢測.............................................................. 28 坐標轉換系統(tǒng)程序....................................................................................... 28 文件讀取.....................................................................