多模GNSS伪码相关干扰机设计  

Design of Multimode GNSS Pseudo-Code-Related Jammer

作　　者：张月霞[1] 杨瑞琪[1] 张玉宣 Zhang Yuexia;Yang Ruiqi;Zhang Yuxuan(Beijing Information Science and Technology University, Beijing 100101)

机构地区：[1]北京信息科技大学,北京100101

出　　处：《火控雷达技术》2018年第1期6-10,共5页Fire Control Radar Technology

基　　金：北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201504058);国家自然科学基金(51334003;61473039)

摘　　要：在信息化战争中,多模卫星导航系统具有三维立体的更加精确的导航和定位能力。通过遏制敌方多模卫星导航系统的正常工作,对战争的胜利起着很重要的作用。本文设计了一种多模GNSS伪码相关干扰机,其利用与C/A码相似的伪码作为干扰信号,使多模GNSS接收机不能正确解调卫星信号,以使其失效。通过分析多模GNSS卫星导航系统的信号特点,设计伪码相关干扰信号,并进行了理论分析,表明使用伪码相关干扰信号所需功率较小。利用DDS芯片和单片机实现了多模GNSS伪码相关干扰机,通过试验验证,该多模GNSS伪码相关干扰机操作简单、干扰效果良好。In information-based war,multimode satellite navigation system has more precision navigation and positioning capabilities in three-dimension. Jammer plays a very important role in winning war by suppressing normal work of hostile multimode satellite navigation system. A multimode GNSS pseudo-code-related jammer is designed,which uses pseudo-code signal similar to the C/A code as jamming signal to make multimode GNSS receiver demodulate satellite signal incorrectly so as to make multimode GNSS receiver become disabled.By analyzing signal characteristics of multimode GNSS satellite navigation system,the pseudo-code-related jamming signal is designed. The theoretical analysis shows that power requirement by pseudo-code-related jamming signal is lower. The multimode GNSS pseudo-code-related jammer is realized by using DDS chip and monolithic computer. The experiment proves that operation of pseudo-code-related jammer is simple and the jamming effect is favorable.

关 键 词：多模卫星导航系统 干扰机 伪码相关 DDS芯片 

分 类 号：TN96[电子电信—信号与信息处理]