一种基于盲源分离的跳频通信抗部分频带噪声阻塞干扰方法  

A BSS Based Anti-jamming Method for Frequency Hopping Communications with Partial Band Noise Jamming Suppression

作　　者：曾现巍[1] 胡绘斌 王可青[3,1] 于淼[1] 

机构地区：[1]总参第63研究所,南京210007 [2]解放军94860部队,南京210018 [3]解放军理工大学通信工程学院,南京210007

出　　处：《现代军事通信》2012年第2期7-11,共5页

基　　金：国家自然科学基金面上项目（61179006）;中国博士后科学基金特别资助（201104800）;中国博士后科学基金（20100471858）;江苏省博士后科研资助计划（1002042C）;饵放军理工大学预先研究基金（20110602）.

摘　　要：部分频带噪声阻塞干扰易于产生且干扰效果好，是干扰方最常使用的干扰方式之一。本文根据跳频信号与部分频带噪声阻塞干扰信号的近似统计独立特性，提出了一种基于盲源分离的跳频通信抗部分频带噪声阻塞干扰方法，通过跳频信号与干扰信号的有效分离，提高输出信号信干比，进一步提高跳频通信抗部分频带噪声阻塞干扰的能力。仿真结果表职，该方法可明显改善输出信号的误码率和相关系数性能，当干扰功率较强时（Rsj=-18dB）时，可使输出信号的信干比改善10dB以上。Partial band noise jamming （PBNJ） is easy to generate with good jamming performance, so it is one of the jamming signals types adopted most by the jammers. According to the statistical independence between the PBNJ signal and the frequency hopping （FH） signal, a blind source separation （BSS） based anti-jamming method for FH communications against PBNJ signal is proposed in this paper. The output signal to noise ratio is improved through the separation between the PBNJ signal and the FH signal, and the anti-jamming ability of FH communication against PBNJ signal is enhanced. Simulation results indicate that the performance of bit error rate and correlation coefficiency of the output signal can be improved greatly with this method. When the power of the PBNJ jamming is much stronger than the FH signal, for example Rsj=-18 dB, the signal to jamming ratio of the output signal can be enhanced by more than 10 dB with this method.

关 键 词：跳频 盲源分离 独立分量分析 部分频带噪声阻塞干扰 

分 类 号：TN958[电子电信—信号与信息处理]