顾及WGDOP的伪距单点定位算法及精度研究  

Research on Pseudorange Single Point Positioning Algorithm and Accuracy Taking into account WGDOP

作　　者：王天[1] 王璐[1] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《测绘与空间地理信息》2014年第8期92-95,共4页Geomatics & Spatial Information Technology

摘　　要：介绍了伪距单点定位的基本算法,给出了相应的改正模型,以及定位精度的比较。通过实例计算,得到伪距单点定位的坐标值,并分析了平差值与已知坐标值的差值,以及模型的误差。结果表明,计算时顾及观测量精度的差异可以进一步提高定位精度。利用组合定位对提高动态导航定位的精度和可靠性具有重要的研究和应用价值。This article describes a algorithm of the pseudorange single point positioning , giving the corresponding correction model , as well as the positioning accuracy comparison .Pseudorange single point positioning coordinate values calculated by way of an example , and analyzed of the difference between the calculation results with the known coordinate values and the model error .The results indi-cate that it can be further improved positioning accuracy when taking into account the differences in measurement accuracy .It is of high research and application value towards raising a dynamic navigation of accuracy and credibility when using combined positioning .

关 键 词：伪距单点定位 定位精度 算法 测量精度 

分 类 号：P228.2[天文地球—大地测量学与测量工程]