一种新的直扩系统综合抗干扰技术  

A New DSSS System Integrated Anti-Jamming Algorithm

作　　者：韩航程[1] 安建平[1] 刘泳庆[1] 薛斌[1] 张宁[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《北京理工大学学报》2012年第8期844-848,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(61072048)

摘　　要：针对FFT-CME干扰抑制算法对以扫频干扰为典型的宽带非平稳干扰抑制效果有限的问题,提出一种新的直扩系统带内综合抗干扰算法.该算法基于DPT算法和牛顿迭代,并联合FFT-CME干扰抑制算法,实现了对窄带单音干扰、平稳宽带干扰、扫频干扰的有效抑制.仿真结果表明,综合抗干扰算法对干信比高达50dB的三种典型强干扰均可起到非常好的抑制效果.Consecutive mean excision （FFT-CME） interference suppression algorithm has little effect on broadband non-stationary interference for direct sequence spread spectrum （DSSS） system, such as chirp interference. To address this issue, a new DSSS system integrated interference suppression algorithm is proposed in this research. The algorithm is on the basis of discrete polynomial transform （DPT） and Newton iteration algorithms. Combined with FFT- CME interference suppression algorithm, it could effectively suppress three typical interferences： narrow-band single tone interference, stable wide-band interference, and the chirp interference. Simulation results show that the proposed algorithm has good suppression effect to the three typical interferences, even the ratio of interference to signal is up to 50 dB.

关 键 词：直扩系统 抗干扰 离散多项式相位变换法 牛顿迭代 

分 类 号：TN953[电子电信—信号与信息处理]