电讯技术Issue(8)：1117-1122,6.DOI:10.3969/j.issn.1001-893x.2014.08.015
基于子带阵列盲处理的空时干扰抑制
Space-time Interference Suppression Based on Blind Sub-band Adaptive Array Processing
摘要
Abstract
In the traditional Space-Time Adaptive Processing ( STAP) of satellite smart antenna terminals, adaptive algorithms require signal information so that they have poor real-time performance and the array processing techniques are not only of high complexity but also suffer from inadequate anti-jammer capabili-ty. In order to solve these problems, a sub-band blind adaptive array processing algorithm is proposed in this paper, which applies the space-time interference suppression technology to Direct Sequence Spread Spectrum ( DSSS) system. Compared with the pure space-domain processing, sub-band adaptive array ( SBAA) greatly increases the freedoms of degree. It also simplifies algorithm complexity relative to Tapped-delay-line adaptive array ( TDLAA) structure of traditional STAP. The proposed sub-band blind adap-tive array algorithm using Exponential Linearly Constrained constant Modulus Algorithm ( EXP-LC-CMA) can provide higher convergence speed and better convergence accuracy with low algorithm complexity. Fur-thermore, the novel algorithm doesn't need training sequences, increasing the ability of tracing signal changes in real time. Simulation results show that the novel space-time interference suppression scheme exhibits a better anti-jamming performance.关键词
空时自适应滤波/子带阵列处理/恒模算法/直扩系统/干扰抑制/盲自适应Key words
STAP/SBAA/CMA/DSSS/interference suppression/blind adaptive分类
信息技术与安全科学引用本文复制引用
赖平,陆锐敏,马世旺,沈俊..基于子带阵列盲处理的空时干扰抑制[J].电讯技术,2014,(8):1117-1122,6.基金项目
国家自然科学基金资助项目(61301158) Foundation Item:The National Natural Science Foundation of China(No.61301158) （61301158）
