GPS数据质量控制中实时周跳探测研究
Real-time Cycle-slip Detection for Quality Control of GPS Measurements
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摘要: 对传统的周跳探测理论和方法进行了改进,实现了非差载波相位周跳的实时探测。通过对Geome-try-free组合和Melbourne-Wbbena组合的特性进行分析,同时利用滤波技术,很好地实现了周跳的实时探测。对GPS车载动态数据以及星载GPS数据进行了仿实时模拟,实验结果表明,本文方法能实时地探测出1周的GPS非差载波相位周跳。Abstract: Based on the conventional theories of cycle-slip detection,a method is developed to detect cycle slips in real time for quality control.The method utilizes two linear combinations,the Geometry-free and Melbourne-Wübbena combinations.The characteristics of the two combinations are analyzed and the filer techniques are used to deal with the time series of combination observations.Real-time simulation tests are implemented using both vehicle kinematic data and on-board kinematic data.The results show that single-cycle slips can be reliably detected in real time.
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