摘要
坐标转换是GPS技术在大地测量中应用的重要内容。在用局部区域的GPS控制网数据处理求解三维坐标转换模型的转换参数时,平移参数病态问题比较严重。在介绍布尔萨模型的基础上,提出了一种改进方案,并结合济宁矿区坐标转换数据对布尔萨模型和改进模型所求七参数进行了精度分析。分析表明:该改进模型能有效改善病态问题,也对现在地方坐标系向2000国家大地坐标系进行转化提供了一个方法,具有一定的实用价值。
Coordinate transformation is an important aspect for GPS application to Geodesy. When the transformation parameters are solved with GPS data in a local area, the translation parameters have serious ill-condition problem. An improved model of based on Bursa model is introduced in this paper, analyzing the accuracy between the Bursa model and the improved model using the data for coordinate transformation of Jining mine. It is showed that this model can weak the ill-condition problem effectively and give a way of transformation from local coordinate system to Chinese geodetic coordinate system 2000（CGCS2000）. Therefore this improved model has a certain practical value.
出处
《全球定位系统》
2010年第1期33-37,共5页
Gnss World of China
基金
中国博士后科学基金项目(20080440049)
国家测绘局重点实验室基金项目(2009A01)资助
关键词
GPS坐标转换
布尔萨模型
病态问题
七参数
改进模型
GPS coordinate transformation
Buras model
ill-condition problem
seven parameters
improved model
