单音干扰对直扩卫星通信系统干扰性能分析  

Analysis of Interference Performance of Monotone Interference to Direct Spread Satellite Communication System

作　　者：施白雪 徐慨[1] SHI Bai-xue;XU Kai(School of Electronics Engineering, Naval Engineering University, Wuhan Hubei 430000, China)

机构地区：[1]海军工程大学电子工程学院

出　　处：《通信技术》2019年第10期2359-2364,共6页Communications Technology

摘　　要：直接序列扩频(Direct Sequence Spread Spectrum,DSSS)是卫星通信系统的主要抗干扰手段之一,具有极强的抗宽带干扰、部分频带干扰以及转发式干扰的能力,能在复杂电磁环境下保护卫星通信能力,并以码分多址(Code Division Multiple Access,CDMA)的形式广泛应用于民用,为战时的民星军用提供可能,因此对直扩系统的干扰研究在军事上具有重要意义。单音干扰由于干扰功率集中,能有效干扰直接序列扩频卫星通信系统。单音信号干扰性能的影响因子主要有频偏、干扰功率以及环境噪声等,需着重对频偏因子以及干信比对干扰性能的影响进行研究。Direct Sequence Spread Spectrum (DSSS) is one of the main anti-interference methods of satellite communication systems. It has strong anti-broadband interference, partial frequency band interference and transmissive interference capability, and can protect satellite communication capability in complex electromagnetic environment. The form of code division multiple access (CDMA) is widely used in civilian applications, providing the possibility for military use of military stars in wartime. Therefore, the study of interference in direct expansion systems is particularly important in military terms. Monophonic interference can effectively interfere with direct sequence spread spectrum satellite communication systems due to interference power concentration. The influence factors of the interference performance of the single tone signal mainly include frequency offset, interference power, and environmental noise. The emphasis is placed on the influence of the frequency offset factor and the interference ratio on the interference performance.

关 键 词：卫星通信 直接序列扩频 单音干扰 干扰性能 

分 类 号：TN927[电子电信—通信与信息系统]