抗干扰时延对接收机观测量精度的影响分析

Analysis of Influence of Anti-interference Delay on Accuracy of Receiver Observation

本文针对多系统卫星导航接收机抗干扰时延补偿问题,提出了一种自适应调整抗干扰延时的补偿算法,使不同频点的采样时刻处于同一时刻,提高了抗干扰状态下的伪距测量精度和载波测量精度.定量分析了不同抗干扰延时对观测量精度的影响,并在某型抗干扰接收机上进行了测试验证.测试结果表明:本文设计的自适应调整抗干扰延时的补偿算法有效,消除了由于抗干扰延时引入的观测量偏差,提高了伪距/载波差分的定位精度.

In the paper,to solve the problem of anti-jamming delay compensation of multi-system satellite navigation receiver,an adaptive compensation algorithm of anti-jamming delay is proposed,which can make the sampling time of different of different frequency points at the same time,and improve the precision of pseudo-range measurement and carrier measurement in anti-jamming state.The influence of different anti-jamming delay on the accuracy of observation is quantitatively analyzed and tested on a certain anti-jamming receiver.The test results show that the adaptive compensation algorithm designed in this paper is effective in adjusting the anti-jamming delay,eliminating the observation deviation introduced by the anti-jamming delay,and improving the positioning accuracy of the pseudo-range and carrier difference.