阵列盲信息处理通信自适应抗干扰方法研究

The purpose of this project is to establish the interference suppression system of adaptive satellite communication in space-time-frequency domains.Comprehensively analyze the mechanism of communication anti-jamming in complex environment and go deep into interference suppression in existence of strong wideband Gaussian noises and wideband FM interference source, narrowband co-channel interference suppression, time domain separation based on blind signal processing in communication anti-jamming system,estimation of signal source number and intelligent method for DOA of signal source detection in complex electromagnetic environment. Through integrated processing of the above-mentioned key technologies, adaptive nulling interference suppression involving blind signal separation based on DOA and feature information fusion is achieved.So the problem of adaptive interference suppression,as well as separating signal source from interference source is effectively resolved.We do research on the basic theory and advanced technology of communication anti-jamming,so that the theory and technology of communication anti-jamming go up to a higher level. This research can improve the ability of China's satellite navigation system in future electronic warfare.

本项目意图构建一种基于盲信息处理的空时频多域联合自适应卫星通信干扰抑制系统，从而有效解决空时频多域重叠及低信干噪比情况下信源与干扰源盲分离及自适应干扰抑制问题。其思路是，综合分析复杂环境下通信抗干扰机理，深入研究强宽带高斯噪声及宽带调频干扰源存在情况下的干扰抑制技术、同频窄带干扰抑制技术、通信抗干扰系统中基于盲信号处理的时域分离技术、复杂电磁环境下的信源数量估计及信源DOA检测智能化方法等理论与技术，并通过上述关键技术的融合处理，实现基于DOA参数与特征信息融合的盲信号分离自适应调零干扰抑制。本项目突出通信抗干扰的基础理论和前沿技术研究，致力于提升通信抗干扰理论和技术水平，对提高我国卫星导航系统的电子对抗能力有积极意义。

本项目意图构建一种基于盲信息处理的空时频多域联合自适应卫星通信干扰抑制系统，从而有效解决空时频多域重叠及低信干噪比情况下信源与干扰源盲分离及自适应干扰抑制问题。其思路是，综合分析复杂环境下通信抗干扰机理，深入研究强宽带高斯噪声及宽带调频干扰源存在情况下的干扰抑制技术、同频窄带干扰抑制技术、通信抗干扰系统中基于盲信号处理的时域分离技术、复杂电磁环境下的信源数量估计及信源DOA检测智能化方法等理论与技术，并通过上述关键技术的融合处理，实现基于DOA参数与特征信息融合的盲信号分离自适应调零干扰抑制。本项目突出通信抗干扰的基础理论和前沿技术研究，致力于提升通信抗干扰理论和技术水平，对提高我国卫星导航系统的电子对抗能力有积极意义。