窄带抗干扰算法对捕获跟踪的影响  

The Impact of Narrow-band Interference Rejection Algorithm on Acquisition and Tracking

作　　者：肖进杰[1] 李金海[1] 欧松林[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《微电子学与计算机》2016年第9期101-105,共5页Microelectronics & Computer

基　　金：国家自然科学基金项目(61271423)

摘　　要：为了验证窄带抗干扰算法对卫星导航接收机性能的影响,首先分析了基于卫星导航接收机中窄带干扰抑制原理和基于重叠加窗的干扰抑制方法.在分析该算法对多种不同干扰抑制能力的基础上,研究了该算法对捕获跟踪性能的影响.实际数据仿真结果表明,该算法能够有效抑制单音、多音及扫频三种不同类型的窄带干扰,且布莱克曼窗较海明窗具有更高的抗干扰性能.当干信比为60dB时,采用该算法后捕获过程的信噪比损失约为1dB,跟踪过程的信噪比损失约为0.8dB.总体来说,该算法在抑制窄带干扰的同时对捕获和跟踪影响较小.In order to obtain the impact of narrow-band interference rejection algorithm on the performance of satellite navigation receiver, the principle of frequency domain narrow-band interference rejection technique in satellite navigation receiver and the frequency domain narrow-band interference rejection method with overlap windowing are analyzed. The rejection ability of the algorithm for different interference is analyzed. The influence of the algorithm for the performance of acquisition and tracking is researched based on these analyses. Simulations with one or more embodiments of the present disclosure have shown that the algorithm can suppress the single-tone interference, multi-tone interference and sweep interference effectively. The interference rejection performance using Blackman windowing is better than using Hamming windowing. When the jam-to-signal ratio is 60 dB, the SNR losses is about 1 dB in the acquisition part and the SNR losses is about 0. 8 dB in the tracking part. As a whole, the algorithm can suppress the narrow-band effectively and has brought little effect on the acquisition and tracking

关 键 词：卫星导航 频域抗干扰 重叠组合 加窗 捕获跟踪 

分 类 号：TN967.1[电子电信—信号与信息处理]