历元间差分定位模型的粗差探测法探测周跳  

Outlier detection in detecting cycle slips based on epoch-difference location model

作　　者：刘先冬[1] 宋力杰[1] 黄令勇[1] 

机构地区：[1]信息工程大学测绘学院,郑州450052

出　　处：《测绘科学》2011年第6期58-60,共3页Science of Surveying and Mapping

摘　　要：假设前一历元的测站点为已知点,当前历元的测站点为未知点,当前历元和前一历元相同卫星的相位观测值取差作为观测值,观测值与当前历元点位坐标的函数关系式称为历元间差分定位模型。本文以历元间差分定位模型构造误差方程,进行最小二乘平差,提出应用Baarda数据探测法对差分观测值进行粗差探测,可准确确定观测值中的周跳。实际算例验证了该方法的可靠性及可行性。To assume that the measured coordinates of the former epoch are known, and the measured coordinates of current epoch are unknown, taking GPS carrier phase measurement difference between sequential epochs as observation, the formulations between the observation and the measured coordinates of current epoch are referred to as Epoch-Difference Location Model, which was in this paper used to construct the error-equations, then adjustment was carried out with the least square method, and outlier detection theory of Baarda was used for accurately detecting cycle slips. An experiment based on actual measured data showed the reliability and feasibility of the method proposed.

关 键 词：GPS定位 周跳 数据探测法 粗差 

分 类 号：P228.1[天文地球—大地测量学与测量工程]