卫星透明转发通信中的隐蔽自适应扩频传输  

Concealed Adaptive Spectrum Spread Transmission for Satellite Communication by Transparent Repeater

作　　者：石荣 胡苏[2] 徐剑韬 

机构地区：[1]电子信息控制重点实验室,成都610036 [2]电子科技大学通信抗干扰国家重点实验室,成都611731

出　　处：《舰船电子工程》2017年第1期54-57,89,共5页Ship Electronic Engineering

基　　金：重点实验室基金(编号:6142105040116210XXXX)资助

摘　　要：针对卫星透明转发通信中短码扩频传输在反侦察抗干扰方面存在的问题,提出了一种改进的隐蔽自适应扩频传输方法。该方法利用非周期长码序列实施扩频,从而在信号波形上实现了对通信发送方信息符号速率参数的隐藏,第三方难以从截获到的信号中推断其扩频处理增益的大小,只能实施盲目压制干扰。而通信双方可利用卫星透明转发信道的开放性特点,对干信比参数实施测量,并以此为参考来调节己方的信息符号速率,从而通过改变扩频处理增益来自适应抵抗外界干扰的变化,实现了在干扰条件下传输速率的最大化。仿真结果验证了理论分析的有效性,从而为透明转发体制的卫星通信抗干扰工程应用和通信电子防御提供了新的手段。There are many problems about anti-reconnaissance and anti-jamming for satellite communication by transparent repeater,if the short cycle code is used for direct sequence spectrum spread.In this paper an improved method about concealed adaptive spectrum spread transmission is proposed.The non-cycle long code is introduced so as to conceal the information symbol rate parameter.The third party cannot conclude the processing gain of spectrum spread about this communication.So the blind jamming is adopted.The satellite communication by transparent repeater is open to all.After the jamming signal ratio is measured by the transmitter,the symbol rate is adaptively changed for the satellite communication.In this way the jamming can be eliminated effectively and the maximum transmission rate is realized in jamming conditions.The simulation results show the validity of the theoretic analysis.It is a new approach for anti-jamming application of satellite communication by transparent repeater and communication electronic protection.

关 键 词：卫星通信 透明转发 长码扩频 隐蔽扩频 自适应扩频 反侦察 抗干扰 通信电子防御 

分 类 号：TN927[电子电信—通信与信息系统]