一种改进的载波相位周跳探测与修复方法

本文提出了一种改进的探测和修复小周跳的方法。根据电离层残差值在短周期内的连续性,可以比较准确地用函数来拟合的特点,再根据L1和L2载波相位观测值之间小数部分应该满足的函数关系,来探测和修复第二个载波的周跳。该方法仅使用单星双频载波相位数据,而且每颗卫星之间的数据是独立处理的。由于载波的小数部分不受周跳的影响,所以该方法的有效性能够不受周跳类型的影响。试验表明该方法对于L1上小于9周、L2上小于7周的周跳很有效。

An improved method of detecting and repairing carrier phase cycle slip

An improved method for cycle sli Pdetecting and repairing was presented by using the ionospheric-residuals and the relationshi Pof carrier phase fraction observables between L1 and L2 carrier.Dual-frequency carrier phase measurements were used for experiment analysis and treated independently for each individual satellite.Thanks to its continuity,the ionospheric-residual could be accurately fitted by a function during a relatively short time period.Furthermore,the relationshi Pbetween L1 and L2 carrier phase,especially the fraction parts,was taken into account for cycle sli Pdetecting and repairing.Experiment showed that cycle slips about less than 9 cycles on L1 and 7 cycles on L2 could be detected and repaired effectively.