GPS动态定位序贯平差统一模型  

Sequential Adjustment Uniform Model for GPS Kinematics Positioning

作　　者：刘忠 黄观文[2] 丁晓光[2] 

机构地区：[1]西安市勘察测绘研究院,陕西西安710054 [2]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《地球科学与环境学报》2008年第3期319-322,共4页Journal of Earth Sciences and Environment

基　　金：中国地质调查局项目(1212010440410);国家自然科学基金项目(40672173)

摘　　要：针对GPS动态定位中模糊度参数个数的可变性和参考卫星变化时参数的不适用性,导致常规序贯平差模型前后两个历元间承接关系异常复杂、计算量大、效率较低等问题,根据GPS动态定位的特点,利用转移矩阵的思想,推导了序贯平差统一模型,有效解决了变参数的问题。结果显示:推导的序贯平差统一模型计算正确,点位计算精度优于0.482 m,且计算效率明显优于常规模型,便于编程运算。Since the number and character of ambiguity parameters are changeable, so the connection of general sequential adjustment between two epochs is very inefficient and complex in GPS kinematics positioning. Therefore, this paper provides an uniform model of sequential adjustment based on the characteristics of GPS kinematics positioning and transfer matrix, which can solves the problems of parameters changeable efficiency. An example indicates that the uniform model may calculate rightly, the accuracy of point is better than 0. 482 m. Compared with general model, the uniform model is more efficient and convenient to program.

关 键 词：序贯最小二乘 相对定位 绝对定位 动态定位 转移矩阵 

分 类 号：P228.4[天文地球—大地测量学与测量工程]