GPS频域抗干扰算法研究  

The Study of GPS Frequency Domain Anti-jamming Algorithms

作　　者：刘拥军[1] 胡捍英[1] 

机构地区：[1]解放军信息工程大学通信工程系,郑州450002

出　　处：《信号处理》2009年第11期1738-1741,共4页Journal of Signal Processing

基　　金：国防预先研究项目(40901010201)

摘　　要：GPS频域抗干扰技术具有实现简单,抑制部分频带干扰效果好的特点;提出了一种新的用于GPS频域抗干扰的自适应门限获取算法;比较了均值、零值、白噪声化三种频域门限陷波算法和频域自适应滤波抗干扰算法的在不同的干扰和信号带宽比情况下的抗干扰性能;从仿真结果可以看出自适应滤波抗干扰算法和零值频域门限陷波算法在性能上比均值和白噪声化频域门限陷波算法具有更好的抗干扰性能;同时仿真了强干扰条件下不同信噪比的情况下各算法的性能,从仿真结果可以看出当信噪比大于-15dB的情况下,频域抑制算法都能够很好的抑制部分频带干扰。GPS frequency domain anti-jamming technique can suppress partial spectrum jamming effectively;A novel adaptive threshold acquire method is presented in GPS frequency domain anti-jamming algorithms;compared the performance of three frequency domain threshold notch algorithms and frequency domain adaptive fiher anti-jamming algorithm under the different ratio of jamming bandwidth to signal bandwidth ; the performance of adaptive filter anti-jamming algorithm and zero value frequency domain threshold notch algorithm are better than mean value frequency domain threshold notch algorithm and white noise value frequency domain threshold notch algorithm;in the end,the performance of the frequency domain algorithms under different SNR is simulated;the simulation result show that if SNR is better than -15dB, frequency domain anti-jamming algorithms can suppress partial spectrum jamming effectively.

关 键 词：GPS 频域 抗干扰 自适应滤波 

分 类 号：TN911[电子电信—通信与信息系统]