用相位减伪距法与电离层残差法进行周跳探测分析

Analysis of Cycle Slip Detection Using Phase Pseudo-range Reduction Method and Ionosphere Residual Method

在GPS测量中,对接收的数据进行预处理时,会发现数据产生周跳的现象,所以周跳的探测与修复是处理数据的必要环节。在处理周跳时主要采用的方法是先用高次差法进行大周跳数据过滤,然后在探测小周跳数据时,分别用相位减伪距法和电离层残差法进行探测,得出这2种方法中电离层残差法可以更好地对小周跳进行探测。但是如果2个载波的组合是某一特殊值,则很难用这种方法进行探测,这时需要采用多种方法组合探测。

In GPS survey,when the received data is preprocessed,the phenomenon of cycle slip will be found,so the detection and repair of cycle slip is a necessary link in data processing.In this paper,the main method used in dealing with cycle slip is to filter data with high-order difference method for large cycle slip.In the detection of small cycle slip data,the phase pseudo-range reduction method and ionosphere residual method are used to detect,and the ionosphere residual method can better detect small cycle slip in these two methods,but if the combination of two carriers is a special value,it is difficult to use this method to detect,so many methods need to be combined to detect.