三频载波组合观测值能获得更多长波长、低噪声的优化组合。首先利用伪距与相位差法分析了组合观测值的电离层延迟和噪声影响;再使用能降低电离层延迟和观测噪声的3组线性无关组合(1,4,-5)、(-1,-5,6)和(-3,6,-2)对BDS三频数据进行处理;然后对BDS的3个不同星座进行周跳探测与修复。实验证明,该组合方法可准确探测并修复一周以上的所有周跳。

The triple-frequency carrier combination can obtain more optimized combination of long wavelength and low noise. In this paper, we used the codephase method to analyze the ionospheric delay and noise impact of combination observations, and chose the linear combination of three groups of linear independence(1,4,-5),(-1,-5,6),(-3,6,-2), which could reduce the ionospheric delay and observation noise at first. And then, we used the linear combination to process BDS triple-frequency data, and detected and repaired the cycle-slip of three different constellations of BDS. The experimental result shows that the new combination method can detect and repair all the cycle-slips for more than one circle.