摘要
对于双频GPS接收机 ,Gipsy软件可以对单站载波相位测量中的野值 ,周跳进行自动检测与修复 ,本文用实测数据对Gipsy算法的效率进行评估。计算表明 ,对P码伪距的情形 ,该算法对周跳的修复基本无误 ;对C/A码的伪距情形 ,则会有正负几周的误差。本文提出在Gipsy算法中加进小波方法 ,用来估计模糊度 ,计算表明 ,可极大地提高Gipsy算法的效率。
For the dual frequency receiver, GIPSY software can detect and correct the outliers and the cycle slips in carrier phase measuerments of one GPS station, it sefficiency is assessed using GPS data in the paper. The calculated examples show that GIPSY algorithm can basically unerringly correct the cycle slips in the case of P code pseudorange, but may produce several cycle error in the case of C/A code Pseudorange. In the paper it is suggested that the wavelet method is joined on to GIPSY software to estimate the ambiquity, it can evidently raise efficiency of GIPSY algorithm.
