GPS短基线整周模糊度的直接解法  

Direct Calculation of Ambiguity Resolution in GPS Short Baseline

作　　者：邱蕾[1,2] 花向红[1,2] 蔡华[1,2] 伍岳[3] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]武汉大学灾害监测与防治研究中心,武汉市珞喻路129号430079 [3]三峡大学三峡库区地质灾害教育部重点实验室,宜昌市大学路8号443002

出　　处：《武汉大学学报（信息科学版）》2009年第1期97-99,104,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40474003)

摘　　要：提出了在位移值较大的情况下(0.7 m),通过多种载波相位组合,解算短基线GPS整周模糊度的方法。导出了在解算过程中保证L1和L2载波的整周模糊度N1和N2为整数的条件,从而将DC(direct calcu-lation)算法[1]不仅推广到大变形的情况,而且推广到短基线GPS整周模糊度的解算,解决了快速准确解算短基线GPS整周模糊度的问题。A new method that calculates ambiguities in GPS short-baseline through the combination with different carrier phase observations when the deformation is relatively large （0.7 m）. A condition that should be satisfied to make sure that the ambiguities of L1 carrier phase and L2 carrier phase are integer, is also drived. The DC algorithm proposed in the reference can not only be used to large deformation , but also to the ambiguity resolution in GPS short baseline. Furthermore, the difficulty of the quickness and effectiveness of ambiguity resolution in GPS short baseline, is solved.

关 键 词：GPS短基线 组合观测值 整周模糊度 DC算法 

分 类 号：P228.41[天文地球—大地测量学与测量工程]