改进的频域窄带干扰抑制方法  

The Improved Method for Suppressing the Frequency Domain Narrowband Interference

作　　者：李平博 王璐[2] 严玉国[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077 [2]铁道警察学院,郑州450053

出　　处：《空军工程大学学报（自然科学版）》2015年第2期78-81,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61174194);陕西省自然科学基础研究计划资助项目(2013JM80110)

摘　　要：针对频域窄带干扰抑制方法的不足,分别提出改进的自适应多门限干扰检测算法和广义延拓逼近算法在干扰抑制中的应用。改进算法使用去除干扰频点之后的频谱进行检测干扰,检测效果有了明显提高;有约束条件的一元函数延拓逼近算法,结构简单,通过延拓逼近思想,减小了对干扰频点处理时信号时域波形的失真。Matlab仿真通过误码率对比验证了算法性能,从而证明改进方法具有更好的干扰检测性能和更优的干扰处理能力。For the weakness of the frequency-domain narrowband interference suppression methods, the im- proved adaptive multi-threshold interference detection algorithms and the application of generalized extend- ed approximation algorithm in interference suppression have been put forward. The improved algorithm used the spectrum to remove the interference continues after detection frequency interference detection effect has been significantly improved; there is an element of constraint extension function approximation algorithm, simple structure ,approaching ideas by extension, reducing the time-domain waveform signal processing frequency interference distortion. Matlab simulation verifies the performance of the algorithm throw the contrast of BER, and it is improved the interference detection performance and interference dis- pose ability of the improved algorithm.

关 键 词：快速傅里叶变换 窄带干扰 窄带高斯模型 延拓逼近 

分 类 号：TN914.42[电子电信—通信与信息系统]