GNSS高程拟合中的粗差探测  

Gross Error Detection in GNSS Height Fitting

作　　者：张盼盼 郭春喜[2] 马艳鸽 ZHANG Panpan;GUO Chunxi;MA Yange(School of Geology Engineering and Geomatics,Chang＇an University,Xi＇an Shaanxi 710064,China;Geodetic Data Processing Center,State Bureau of Surveying and Mapping,Xi＇an Shaanxi 710054,China)

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710064 [2]国家测绘地理信息局大地测量数据处理中心,陕西西安710054

出　　处：《北京测绘》2018年第8期982-986,共5页Beijing Surveying and Mapping

摘　　要：测量数据中不可避免的存在粗差,当观测值中含有粗差,会严重的影响观测成果的质量。为了对粗差进行探测,选取了数据探测法、稳健估计、多维粗差的同时定位与定值法(LEGE法)对观测值中的粗差进行检验,并进一步利用数据探测法对LEGE法进行改进,将数据探测法、稳健估计、LEGE法以及改进得到的LEGE+数据探测法应用于GNSS高程拟合的粗差探测中。在实验区域,计算结果表明:稳健估计、LEGE法、LEGE+数据探测法具有良好的抵抗粗差的能力;随着含有粗差的观测值数量增多,与稳健估计、LEGE法、LEGE+数据探测法相比,数据探测法的精度会降低;LEGE法和LEGE+数据探测法对含有粗差的观测值具有一定的修正能力。Gross errors are unavoidable in measurement data, In order to detect gross error, The method of data detection, robust estimation and simultaneous location and determination of multidimensional gross errors （LEGE method） is used to test the gross error in the observed data, The data detection method, robust estimation, LEGE method and improved LEGE method are applied to the gross error detection of GNSS height fitting. The results show that robust estimation, LEGE method and improved LEGE method have good ability to resist gross error;With the increase of the number of observations with gross errors, the accuracy of the data detection method will be reduced.

关 键 词：粗差 数据探测法 稳健估计 粗差同时定位与定值法(LEGE法) 高程拟合 

分 类 号：P207.2[天文地球—测绘科学与技术]