GPS变形监测中提取大变形量的单历元解算方法研究  

A Method of Single Epoch GPS Deformation Surveying to Obtain Large Deformation

作　　者：席瑞杰 肖玉钢[1] 刘邢巍[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079

出　　处：《大地测量与地球动力学》2015年第1期26-29,共4页Journal of Geodesy and Geodynamics

基　　金：国家863计划(2012AA12A209);国家自然科学基金(41374033)

摘　　要：提出一种综合利用宽巷组合观测值与L1观测值提取测站大变形量的GPS单历元变形监测方法。充分利用变形监测点已知以及模糊度之间的线性相关性等特点,通过ARCE算法对测站先验坐标计算出的部分宽巷模糊度进行±1周的搜索,正确固定所有宽巷模糊度后提取监测点粗略变形量,再利用L1观测值进一步提取剩余变形量。通过实例验证,本方法有效、可靠,在变形量较大的情况下能取得很好的效果。A method of kinematic deformation surveying by single epoch is described here to obtain the large deformation.At first,we use the wide-lane measurements and the approximate coordinates of monitor sites to resolve the initial wide-lane ambiguities.Based on the correlations between the ambiguities,the ARCE method is used to search the correct wide-lane ambiguities.A rough deformation is obtained.Then,we use the L1 measurement and the method of without cycle slip detection and ambiguity resolution to obtain the residual deformation.The tolerance of position error for a priori coordinates is increased to 70 cm,which is suitable for kinematic deformation surveying.

关 键 词：GPS变形监测 单历元 宽巷观测值 整周模糊度 无周跳无模糊度算法 

分 类 号：P228.42[天文地球—大地测量学与测量工程]