文档介绍：测量坐标系转换问题讨论及最小二乘坐标转换程序设计
摘要:在工程实践中,常常会遇到坐标基准的选择和坐标系的建立问题,这会关系的后续工作的进行。进行基准的选择,要考虑到多方面的因素,包括基准面和基准线的选择问题。而在进行数据处理的时候,有要将外业观测数据先归算至椭球面,然后再投影至高斯投影面,最后在进行平差计算,在归算和投影中,要注意中央子午线和投影高程面的选择,以减小投影变形,满足精度要求。由于根据需要选择了不同的坐标系,所以就不可避免的产生了坐标转换的问题。本文就着重阐述了工程控制网的建立和坐标系的选择以及归算和高斯投影方面的知识。
关键词:坐标系高斯投影坐标转换精度分析
The conversion of measurement coordinate system and the programme design the least square coordinate transformation
Abstract: In engineering practice, we often encounter the problem of how to choose coordinates of reference and coordinate system, which has close relationship with the following works. For the choice of benchmark, many various factors should be taken into consideration, including the choice of datum level(基准面) and central meridian. When in the course of data processing, we should firstly operator the field observation data to ellipsoid, and then projected to the Gauss projection plane, and the last course is adjustment calculation. In the return calculation(归算) and projection, we should pay attention to the choice of central meridian and the projection surface elevation, in order to reduce the projection distortion and meet the required precision. Because we have chosen the different coordinate system for different engineering practice, so it is inevitable that we should do the work of coordinate transformation. This article focuses on the establishment of project work, the choice of coordinate; return calculation (归算) and the Gauss projection knowledge, and the transformation of different coordinate system and the precision of coordinate transformation
Key word: Coordinate system,Gauss projection, coordinates transformation precision analysis
目录
第一章绪论 1
第二章常用大地测量坐标系及其转换关系 2
2
大地测量参考系统 2
大地测量参考框架 3
3
北京54坐标系 4
1980国家坐标系 4
新北京54坐标系 5
2000国家大地坐标系 5
坐标系间的转换关系 6
不同空间直角坐标系间的转换关系 6
不同大地坐标系间的转换关系 7
第三章高斯投影概述 9
地图数学投影和投影变形 9
地图投影的分类 10
高斯投影 11
高斯投影