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中文摘要：
本文基于多频组合观测值探测周跳的原理，利用模拟的GPSL5数据与LI、12进行不同的线性组合，选取（0，1，-1）、（-1，8，-7）和（1，-6，5）3个波长较长、线性不相关且几何距离无关、观测噪声较小的组合，对实测数据人为加入了大d、不同的周跳组合，周跳探测结果表明，三频甚至多频组合观测值能够实时探测各种情况下的周跳。
英文摘要：
Based on the principle of cycle-slip detection using multi-frequency combined observations, different linear combina- tions using L1, L2 and simulated L5 were introduced in the paper. The combinations of （0, 1, - 1 ）, （ - 1, 8, - 7） and （ 1, - 6, 5） were employed as they possess longer effective wavelength, linear-independent, geometry-independent and less noise. Moreover, measured data was added on different combinations with large and small cycle-slip. Results showed that three-frequency even multi-frequency combined observation could detect cycle-slip real-time in any condition.
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