摘要
实际的全球定位系统(GPS)测量中,因为多径效应的影响而使定位精度降低。而环路滤波方法中的Strobe相关器可以有效抑制长多径,但对短多径常常无效。为克服此缺点,在传统Strobe相关器的基础上,细化对于同相多径的情况下建模,对于传统Strobe相关器的表达式进行修正,得到改进型Strobe相关器。接着结合SPIRENT4500GPS信号模拟器和东南大学ASIC中心自主研发的多通道GPS接收机SEU-GPS,进行模拟信号测试,验证了算法的有效性。
In the real measure of GPS（Globe Position System）,the positioning accuracy will reduce because of multipath effect.One method of loop filtering methods called Strobe correlator can mitigate long-delay multipath effectively,however,it usually makes no sense to short-delay multipath.To overcome its shortcoming,this paper does some research on the basis of tradtional Strobe correlator with detailed modeling of in-phase multipath,making some correlation of the tradtional Strobe correlator expression and getting the improved Strobe correlator.Based on the SPIRENT4500 Multi-channel GPS simulator and SEU-GPS,the result of simulation is provided to give the verification of the algorithm in the end.
出处
《电子器件》
CAS
2011年第2期168-171,共4页
Chinese Journal of Electron Devices
基金
江苏省科技成果转化项目(BA2006007)
