扩频导航接收机抗干扰技术研究  

On the Anti Jamming Technology of Spread Spectrum Navigation Receiver

作　　者：王迪 WANG Di(Unit 61081,Beijing,100094 China)

机构地区：[1]61081部队,北京100094

出　　处：《科技创新导报》2021年第3期95-97,共3页Science and Technology Innovation Herald

摘　　要：本文提出了基于FADP(频域幅值处理技术)的抗干扰方法,并把该方法应用在扩频导航接收机中,提高导航系统的抗干扰能力。FADP是根据统计判决理论,利用局部最优检测思想得到了一个非线性函数,通过这个非线性函数对干扰进行抑制。把FADP应用在常规平方和伪码捕获结构中,它能够根据非高斯干扰的统计特性来消除干扰以提高扩频系统信噪比。仿真结果证明了本文提出的这种干扰抑制结构能够有效自适应的消除扩频导航接收机中的窄带干扰,提高扩频系统的检测性能。This paper presents an anti-jamming method based on FADP(frequency domain amplitude processing technology),and applies this method to spread spectrum navigation receiver to improve the antijamming ability of navigation system.FADP is based on statistical decision theory,using the idea of local optimal detection to obtain a nonlinear function,through which interference can be suppressed.When FADP is applied to the conventional square sum PN code acquisition structure,it can eliminate the interference according to the statistical characteristics of non Gaussian interference,so as to improve the signal-tonoise ratio of spread spectrum system.The simulation results show that the interference suppression structure proposed in this paper can effectively and adaptively eliminate the narrowband interference in the spread spectrum navigation receiver and improve the detection performance of the spread spectrum system.

关 键 词：FADP 局部最佳检测 扩频系统 抗干扰技术 检测概率 

分 类 号：TN967.1[电子电信—信号与信息处理]