大范围GPS三维坐标转换方法探讨  

Probe into the Method of GPS Three-dimensional Coordinate Transformation in Large Scope

作　　者：蔡昌盛[1] 高井祥[1] 张华海[1] 郑南山[1] 张书毕[1] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221008

出　　处：《矿山测量》2005年第4期4-5,30,共3页Mine Surveying

摘　　要：文中阐述了在大范围GPS坐标转换时,应采用三维坐标转换模型。在将GPS网坐标转换到经典地面网坐标时,由于高程系统不一致,平面位置精度将受到影响。文中在Bursa-W olf三维坐标转换模型的基础上,提出了一种新的转换模型。计算结果表明,新模型能较好的改善高程系统不一致对平面位置精度的影响。The paper illustrates that the three-dimensional coordinate transformation model should be used when the GPS coordinate transformation is made in large scope.Because the inconsistent elevation systems always affect the precision of plane position when the GPS coordinate is transferred into the classical geodetic coordinate,a new coordinate transformation model is put forward in the paper based on the Bursa-Wolf model.The calculation results show that the new model can alleviate obviously the effect of inconsistent elevation systems on the plane position precision.

关 键 词：GPS 坐标转换 高程异常 

分 类 号：P226.3[天文地球—大地测量学与测量工程]