电讯技术2018，Vol.58Issue(3)：269-275,7.DOI:10.3969/j.issn.1001-893x.2018.03.006
卫星通信抗截获信号波形设计
Waveform Design for Satellite Communication Signals with Anti-interception Capability
摘要
Abstract
Aiming at the problem of low concealment of satellite communication signal,this paper proposes an anti-interception signal waveform design method.Strong signal with cyclostationarity is used to mask weak signal without cyclostationary characteristic.The weak signal with important information becomes the background signal of the strong signal.In this way,anti-interception satellite communication comes true. Weak signal contains normal service data and important data.The two signals are merged by using random jump code and random jump at the same time,important data can be hidden in the weak signal,and the weak signal cyclical characteristics is destroyed to improve the security of important data transmission.Sig-nal waveform is simulated.When power ratio of strong signal to weak signal is higher than 7 dB,weak sig-nal can not be detected.Simulation shows that the design waveform has anti-interception capability.Final-ly,the simulation analysis of the weak signal demodulation performance illustrates that the anti-interception ability is improved while the transmission performance is still within the acceptable range.关键词
卫星通信/抗截获/波形设计/大信号掩盖Key words
satellites communication/anti-interception/waveform design/strong signal masking分类
信息技术与安全科学引用本文复制引用
谢岸宏,朱立东,翟继强,李雄飞..卫星通信抗截获信号波形设计[J].电讯技术,2018,58(3):269-275,7.基金项目
通信网信息传输与分发技术重点实验室开放课题(KX172600032) （KX172600032）
中国航天科技五院CAST创新基金重点项目 （）
装备预研领域基金(61405180503) （61405180503）
