中文摘要：

对文献中提出的T urboEdit算法初始阶段周跳探测有关问题进行了深入的理论分析。基于两个假设前提，推证了 T urboEdit算法中所给迭代公式的最小二乘平差实质；结合不同历元迭代公式所满足的概率及置信区间，对可能造成周跳探测不准的原因进行了统计意义上的解释。文中结果表明：T urboEdit算法的成功率仍然主要依赖伪距观测值的精度，在一定的精度水平下，不仅可能存在初始阶段周跳探测不准的问题，其他历元也同样存在周跳探测不准的问题；平差问题自由度较大程度上影响了初始阶段的周跳探测。

英文摘要：

Uncertainty of cycle slip detection in initial phase in TurboEdit algorithm as show n in some papers is theoretically analyzed in detail .Firstly ,the essence of Least-squares adjustment of iterative formulas in TurboEdit algorithm is derived based on two assump-tions .Secondly ,the potential reasons causing uncertainty of cycle slip detection in initial＆amp;nbsp;phase are explained statistically by use of probabilities and confidence intervals of iterative formulas on different epochs .The results show that ：1） the success rate of TurboEdit algo-rithm is still mainly depended on the precision of pseudo range observations and under some precision level ,uncertainty of cycle slip detection will not only occur in initial phases but also in other phases ;2） adjustment freedom will influence uncertainty of cycle slip detection in initial phase more seriously than in other phases .