GPS双频非差周跳探测修复SET法

分析了TurboEdit方法中MW组合和GF组合的缺陷，提出了GPS双频非差周跳探测修复SET（satellite elevation TurboEdit）法。设计了自适应滑动窗口模型对MW组合进行改进，避免了在低高度角时引入多径误差和噪声误差对后续处理精度的影响，增强了对小周跳的探测与修复能力。对GF（geometry-free）组合中引入的伪距误差采用历元间求差法进行替换，同时在卫星低高度角时，对其探测阈值引入高度角加权系数，有效剔除虚假周跳，提高周跳探测成功率与可靠性。在探测出周跳后，联合两种方法组合进行周跳修复。实验结果表明，SET法能够有效地抑制低高度角时的多径效应和观测噪声，降低周跳误探率，并对周跳进行有效修复。

Cycle Slip Detection and Repair SET Method Using GPS Dual-frequency Un-differenced Observations

The limitations of the TurboEdit method with MW combination and GF combination are analyzed. In order to overcome these shortages, an improved cycle-slip detection and repair method named SET (satellite elevation TurboEdit) method is proposed for GPS dual-frequency un-differenced observations. An adaptive moving window model was designed to improve the MW combination that can avoids the influence of multipath and noise error effectively and enhances detection and repair of small cycle slips, using the epoch difference method instead of GF pseudorange method. When the satellite elevation is low, a weighting factor which closely relates to the elevation is introduced into the detection threshold, effectively eliminating error for improved accuracy and reliability. After a slip is detected, MW and GF are combined to make repairs. Experimental results show that the SET approach can suppress multipath and noise effectively, reducing the error rate and repairing cycle slips effectively.