空基双天线场景下盲源分离解析估计方法  

Analytical Estimation on Blind Source Separation in Space-based Dual-antenna Scenario

作　　者：李优阳 褚庆昕[1] 秦飞 胡汉武 邓珂 LI Youyang;CHU Qingxin;QIN Fei;HU Hanwu;DENG Ke(School of Electronics and Information,South China University of Technology,Guangzhou 510641,China;Guangzhou Haige Communication Group Co.,Ltd,Guangzhou 510663,China;School of Electronics,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]华南理工大学电子与信息学院,广州510641 [2]广州海格通信集团股份有限公司,广州510663 [3]中国科学院大学电子与电气工程学院,北京100049

出　　处：《指挥与控制学报》2024年第1期59-66,共8页Journal of Command and Control

基　　金：国家自然科学基金(62071450);国家重点研发计划(2021YFC3090204);中国科学院科研仪器设备研制项目(YJKYYQ20170074)资助。

摘　　要：基于盲源分离的抗干扰技术在诸多领域中具有重要应用价值。在空基数据链常用的双接收天线场景中,应用传统盲源分离方法的计算复杂度比较高,难以进行实时处理,限制了盲源分离技术的性能上限。通过考虑空基数据链中期望信号与干扰信号的单径传播范式,提出了基于四阶累积量优化函数的盲源分离解析求解方法,并获得其闭式解。所提方法在保持估计性能的基础上降低了近67%的计算复杂度,更适于空基数据链计算资源受限下的硬件实现。所提解析方法具有近于0的翻转概率,能够进一步保持分离信号的输出顺序,有利于提升后续信号处理阶段中信号到达检测的估计性能。The anti-jamming technology based on blind source separation has important application value in many fields.In the common used dual-reception scenario for space-base data link,the computational complexity of traditional blind source separation method is relatively high,and it is difficult to carry out real-time processing,which limits the performance limit of blind source separation technology.By considering the single-path propagation paradigm of the expected signal and the interference signal in the space-based data link,an analytical solution method of blind source separation based on the fourth-order cumulant optimization function is proposed,and its closed solution is obtained.The proposed method reduces the computational complexity by nearly 67%while maintaining the estimation performance,and is more suitable for the hardware implementation of space-based data link with limited computing resources.At the same time,the proposed analytical method has a turnover probability of close to 0,which can further maintain the output order of separated signals,and is conducive to improving the estimation performance of signal arrival detection in the subsequent signal processing stage.

关 键 词：抗干扰 盲源分离 四阶累积量 空基数据链 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术]