一种混沌跳频伪卫星导航系统研究  

Research on Chaotic FHSS Based Pseudo Satellite Navigation Systems

作　　者：赵亮[1] 

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《现代导航》2017年第4期235-238,共4页Modern Navigation

基　　金：总装预研基金资助(No.9140XXXXX303XX)

摘　　要：针对传统卫星导航系统导航信号开放式的收发方式,信号容易受到干扰,提出了一种混沌跳频伪卫星导航系统。该系统利用Logistic混沌映射序列作为导航信号扩频码,利用构造的组合混沌映射产生跳频序列控制导航信号发射频率的跳变,通过布设的伪卫星发射导航信号。本文所提系统不仅可以作为卫星导航系统的增强,还可以在电磁干扰环境下独立工作,为区域内用户提供安全、可靠的导航定位服务。仿真研究证明了其有效性。In this paper, chaotic hopping frequency based pseudo satellite navigation system is proposed because the aditional satellite navigation signals are easy to jamming due to the opening transmitting and receiving. The proposed system use he Logistic chaotic sequences as the spread spectrum codes of navigation signals and construct the mixed chaotic sequences to ontrolling the carrier frequency hopping. And then, chaotic hopping frequency navigation system is constructed through the pseudo atellite. The proposed system can improve the security of satellite navigation system. What’s more, the proposed system can build n independent navigation system to provide the PNT services, and the simulation results verify the validity.

关 键 词：混沌 跳频 伪卫星 

分 类 号：TN918[电子电信—通信与信息系统]