针对电离层和对流层对GPS定位造成的影响,利用Klobuchar、Saastamoinen模型修正电离层和对流层延迟,在DSP+FPGA平台上实时接收卫星信号,并实现GPS定位。对比分析有模型修正与无模型修正2种情况得到的GPS定位结果表明,电离层和对流层延迟对定位结果的经纬度影响较小,对高度影响较大。
Aiming at the impact of ionosphere and troposphere to GPS satellite positioning, the Klobuchar model and the Saastamoinen model are used to correct the delay caused by ionosphere and troposphere to receive real time satellite sig-nal on the DSP+FPGA platform in order to accomplish GPS positioning. By comparing the GPS positioning results, the delay caused by ionosphere and troposphere has rather small impact on the positioning result of longitude and lati- tude, but has great impact on the positioning result of altitude.