GPS姿态测量中缩小相位模糊空间的方法

采用了两种手段,即利用多天线和相位平滑伪距的方法来减小相位模糊搜索空间,有效地解决了精度要求高时长基线存在的模糊搜索空间过大的问题。在两种方法中分别导出了各自的概略搜索空间,与普通方法相比,特别是在长基线时大大缩小了搜索空间,具有很大的优越性。

Approaches of Reducing Integer Ambiguity Searching Volume in GPS Attitude Determination

In GPS interferometric attitude determination, the size of phase integer ambiguity searching volume afifects directly the speed of determining the correct integer ambiguity. This paper provides two approaches:one uses multiply antennas, and the other uses the phase smoothed pseudoranges to reduce searching volume and to uncorrelate with the length of the baseline. Both approaches can satisfy the requirements of high precision and small searching volume.The derived data show that they are superior to the conventional way.