北斗三频非差观测数据的周跳探测与修复方法

A NEW METHOD OF CYCLE-SLIP DETECTION AND CORRECTION FOR BEIDOU TRIPLE-FREQUENCY UN-DIFFERENCED OBSERVATIONS

以组合周跳检验量标准差最小为标准,相位组合波长和电离层延迟放大系数为约束条件,选取一组适用于北斗三频数据的线性无关的相位组合,探讨了伪距/相位组合法在不同类型卫星下的周跳探测性能,并采用一组实测北斗三频数据测试了该方法的周跳修复性能。结果表明,该方法可实时探测与修复GEO和IGSO卫星观测数据的周跳;而当采样间隔较小时,可实时探测与修复MEO卫星观测数据的周跳。

By taking the smallest standard deviation of cycle-slip as the standard,the wavelength of phase com- bination and amplification factor of ionospheric delay as the constraint condition, a linear independent carrier phase combinations for Beidou are selected. Combining with the theory of multi-frequency cycle-slip detection, and accord- ing to the feature of three kinds of satellites within Beidou Navigation Satellite System（ BDS）, the performance of cycle-slip detection in the case of different types of satellites is discussed. By using Beidou triple-frequency observa- tion data, the performance of cycle-shp correction is verified. The result shows that proposed method can detect and repair cycle-slips of triple-frequency un-differenced observations of GEO and IGSO satellite. And cycle-slips of ob- servations of ME0 satellite can be detected and repaired in case of high data rate.