基于StarFire星站差分GPS系统的精密静态解研究  

The Research of the Precise Static Solution Based on the StarFire Star-station Differential GPS System

作　　者：杜强[1] 陆秀平[2] 肖振坤[3] 王春瑞[1] 邓凯亮[2,4] 

机构地区：[1]92292部队 [2]海军海洋测绘研究所 [3]92493部队 [4]海军大连舰艇学院海洋测绘科学与工程系

出　　处：《海洋测绘》2011年第5期4-8,共5页Hydrographic Surveying and Charting

基　　金：国家863计划项目(2006AA06A202);国家重大海洋勘测专项项目(4200301);国家自然科学基金项目(41074002)

摘　　要：针对StarFire星站差分GPS系统静态观测定位结果存在收敛和发散现象,提出了直接平均法、平均中位法和密度中位法以获取其精密静态解。平均中位法考虑了收敛和发散过程,其计算结果要优于直接平均法;但由于没有相应的收敛点和观测点定位模型,平均中位法获取的精密静态解存在一定的不确定性;基于观测值密度分布的密度中位法不需要确定收敛点和发散点,就能得到精密静态解。实例表明,当观测环境相对稳定,观测过程没有明显的收敛和发散现象时,直接平均法、平均中位法和密度中位法的精密静态解基本相同,密度中位法略优;当观测环境差,观测过程出现明显收敛和发散现象时,密度中位法最优,平均中位法次之。The StarFire star-station differential GPS system impacted by environment has the convergence and divergence phenomenon,the direct-average method,the average-median method and the density-median method are put forward to acquire the precise static solution.The result of the average-median method of the convergence and divergence phenomenon are better than ones of direct averaging method;without corresponding convergence point and observation point location model,the static solution method obtained the average-median method has a certain uncertainty;based on observation distribution density,the density-median method can get precise static solution when the observation local points of the convergence and divergence phenomenon is not obvious.Examples show that the environment is relatively stable when the observation process of convergence and divergence is not obvious phenomenon,the precision static solutions obtained by the direct-average method,the average-median method and the density-median method are basically the same,the result of the density-median method is slightly better in counterpoint;when observing the environment poor observation process convergence and divergence evident phenomenon,the result of the density-median method is better than ones of the the direct-average method,the average-median.

关 键 词：StarFire星站差分GPS系统 直接平均法 平均中位法 密度中位法 精密静态解 

分 类 号：P228.4[天文地球—大地测量学与测量工程]