基于伪距相位组合法和电离层残差法探测和修复周跳的研究

Research on Detecting and Repairing Cycle Slip Based on Code-Phase Combination Method and Ionospheric Residue Method

GPS高精度定位中,周跳的探测和处理是一个核心难点.电离层残差法因为其探测精度高而被广泛应用于探测周跳,但是不能分离具体频率上的周跳.根据该特点,对于联合电离层残差法和伪距相位组合法两种方法消除周跳的可行性进行了分析.研究表明:该方法可以完全解决电离层残差法不能分离周跳的问题,联合之后的周跳探测方法灵敏度高,探测准确,计算原理快速简单,是一种探测修复周跳的有效手段.

In GPS high-precision positioning, the detection and processing of the cycle jump is a core difficulty. Ionospheric residual method is widely used to detect the cycle slip because of its high detection accuracy, but it cannot separate the cycle slip at a specific frequency. Based on this characteristic, the ionospheric residual error method and the code-phase combination method are used to detect the detection accuracy. The feasibility of combining two methods to eliminate cycle slip is analyzed. This method can completely solve the problem that the ionosphere residual method can not separate the cycle slips. Research shows that the cycle slip detection method after combination has high sensitivity, accurate detection,fast and simple calculation principle,which is an effective means of detecting repair cycle slips.