对GPS接收机带限高斯噪声压制干扰的干扰带宽选择分析

毛虎; 吴德伟; 卢虎

doi:10.15892/j.cnki.djzdxb.2015.01.030

2015 , Vol. 35 >Issue 1: 118 - 123

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.01.030

摘要

针对带限高斯噪声干扰效率低下的问题,以GPS接收机码跟踪误差和星历误码率作为干扰效果评估准则,在分析GPSC/A码、P(Y)码和M码信号功率谱特点的基础上,通过对干扰带宽影响码跟踪和星历解调过程进行理论推导,定性的判断出最佳干扰带宽的存在。定量的仿真分析结果表明:对于C/A码信号,当干信比较小时,要充分考虑到误码率的影响,将造成码跟踪误差最大的干扰带宽减小一些,作为其最佳干扰带宽;而对于P(Y)码和M码信号,应选择造成码跟踪误差最大的干扰带宽,作为其最佳干扰带宽。

关键词： GPS扩频码; 码跟踪误差; 误码率; 干信比; 干扰带宽

本文引用格式

毛虎 , 吴德伟 , 卢虎 . 对GPS接收机带限高斯噪声压制干扰的干扰带宽选择分析[J]. 弹箭与制导学报, 2015 , 35(1) : 118 -123 . DOI: 10.15892/j.cnki.djzdxb.2015.01.030

Abstract

Aim at the problem of low efficiency of band-limited Gaussian noise jamming, using code tracking error and ephemeris bit error rate of GPS receiver as the jamming effect evaluation index, on the basis of analysis characteristics of GPS C/A code, P(Y) code and M code signal power spectral density, to carry on the theoretical derivation about jamming bandwidth influence code tracking and ephemeris demodulation process, the existence of optimal jamming bandwidth is judged qualitative. The quantitative simulation results show that when the JSR is small, the bit error rate influence should be fully considered, the jamming bandwidth which causes the biggest code tracking error should reduce a little as the best jamming bandwidth for C/A code signal, the best jamming bandwidth should choose the jamming bandwidth which causes the biggest code tracking error for the P(Y) code and M code signal.

Key words： GPS spread spectrum code; code tracking error; bit error rate; JSR; jamming bandwidth

[an error occurred while processing this directive]

参考文献

[1]	Y Oshman, M Koifman. Robust GPS Navigation in the Presence of Jamming and Spoofing[C] // Proceeding of AIAA Guidance, Navigation, and Control Conference and Exhibit. Austin, Texas: American Institute of Aeronautics and Astronau-tics, 2003: 1-11.
[2]	Hegarty C J. Suppression of Pulsed Interference Through Blanking[C] // Proceeding of The International Association of Institutes of Navigation 25th World Congress, San Diego, CA, June 2000.
[3]	向培胜. GPS抗干扰技术综述[J]. 电讯技术, 2009, 49(10):93-95.
[4]	Iyidir B, Ozkazanc Y. Jamming of GPS receivers[C] // California: Signal Processing and Communications Applica-tions Conference, Proceedings of the IEEE 12th, 2004.
[5]	李国庆. GPS定位解算算法与干扰技术研究[D]. 哈尔滨: 哈尔滨理工大学, 2009.
[6]	Kaplan E D, Hegarty C J. Understanding GPS: Principles and Applications[M]. Norwood, MA: Artech House, 2006.
[7]	Betz J W, Kolodziejski K R. Generalized theory of code tracking with an early-late discriminator part II: Noncoher-ent processing and numerical results[J]. IEEE Transac-tions on Aerospace and Electronic Systems, 2009, 45(4):1551-1564.
[8]	汪捷, 赵学军. 导航对抗背景GPS信号宽带压制干扰分析[J]. 海军工程大学学报, 2010, 22(6):30-34.
[9]	孟生云, 杨文革. 直扩/跳频测控信号伪码跟踪抗干扰性能分析[J]. 电讯技术 2013, 53(5): 560-564.
[10]	Joon H C, Jeong Y K, Lehnert J S. Average bit-error-rate performance of band-limited DS/SSMA communication[J]. IEEE Transactions on Communications, 2002, 50(7): 1150-1159.
[11]	张春海. 直接序列扩频通信系统抗干扰技术研究[D]. 长沙: 国防科学技术大学, 2006.

Options

文章导航