一种快速自适应干扰对消的方法研究  

A Study on a Fast Adaptive Interference Cancellation Method

作　　者：操礼长 汪筱阳 王小旗 朱琳 李先友 梁军 魏通峰 CAO Lichang;WANG Xiaoyang;WANG Xiaoqi;ZHU Lin;LI Xianyou;LIANG Jun;WEI Tongfeng(The Unit 63769 of PLA,Xi'an 710043,China;School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China;School of Air and Missile Defense,Air Force Engineering University,Xi'an 710051,China)

机构地区：[1]解放军63769部队,西西安710043 [2]西安理工大学机械与精密仪器工程学院,西安710048 [3]空军工程大学防空反导学院,西安710051

出　　处：《现代雷达》2022年第11期51-55,共5页Modern Radar

基　　金：试验技术研究项目资助(1900050068)。

摘　　要：针对航天测控雷达易受干扰的问题,在研究航天测控信道干扰识别方法的基础上,考虑最小均方误差(LMS)算法阶数高、计算量大的问题,研究了一种快速自适应干扰对消算法。首先,对基带信号进行选择和解构;然后,基于LMS算法自适应调节的滤波器系数和重构的干扰信号,实现干扰对消。仿真结果表明:同LMS算法相比,文中所提算法计算量小、运算速度快,且对消后有用信号信噪比的恶化量可控制在0.3 dB左右,具有一定的工程实践性。Aiming at the problem that aerospace telemetry tracking and command(TT&C) radar is vulnerable to interference, on the basis of studying the interference identification method of aerospace TT&C channel, considering the high order and large amount of calculation of least mean square(LMS) algorithm, a fast adaptive interference cancellation algorithm is studied. The baseband signal is selected and deconstructed firstly, then the interference cancellation is realized based on the filter coefficients adaptively adjusted by LMS algorithm and the reconstructed interference signal. The simulation results show that compared with LMS algorithm, the proposed algorithm has small amount of calculation and fast operation speed. And the deterioration of signal-to-noise ratio of useful signal after cancellation can be controlled at about 0.3 dB, which has certain engineering practicability.

关 键 词：航天测控 自适应滤波 快速最小均方误差算法 干扰对消 

分 类 号：V557[航空宇航科学与技术—人机与环境工程] TN973.1[电子电信—信号与信息处理]