载波相位平滑伪距在GNSS接收机中的应用
首发时间:2013-11-19
摘要:本文首先介绍了在GNSS卫星定位的原理,提出了载波相位和伪距两个关键测量值,由于载波相位的定位精度远高于伪距,因此推出了用载波相位平滑伪距的算法。本文采用了经典的hatch滤波器,在此基础上又引入了可变权重,初值计算的方法,进一步提高定位精度。在本文的最后,给出了此算法在GNSS接收机中的仿真结果,验证了算法的可行性与实用性。
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The Application of Carrier Phase Smoothing Pseudorange in GNSS Receiver
Abstract:This paper first introduces the principle of GNSS satellite positioning, and describes two key measurements carrier phase and pseudorange. Because the carrier phase positioning accuracy is much higher than pseudorange, proposed carrier phase smoothing pseudorange algorithm. This paper uses the classical hatch filter, on this basis, introducing variable weights and initialization methods to improve positioning accuracy. Finally, the GNSS receiver simulation results verify the algorithm's feasibility and practicality.
Keywords: GNSS;carrier phase smoothing;pseudorange;hatch filter
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