摘要
为了从复杂的回波信号中分离出目标信号,提出了一种适用于线性调频(LFM)体制雷达的多目标信号分离方法,从距离、速度与方位角三个层面滤波,分离出待测信号。信号分离方法中采用了自适应最小方差无失真响应滤波器(MVDR),对含有多目标的回波信号进行空域滤波,从而有效分离出目标信号。对线性调频体制雷达的回波信号进行仿真并作信号处理,结果表明了所提信号分离方法的有效性,从而为目标识别器的研制以及干扰抑制等提供了一种有价值的方案。
To separate the required target signal from the complex echo signals,the paper proposes a method on multi-target signals separation which is suitable for linear frequency modulation（ LFM） radar systems and separates the target signal by filtering the echo signals from three aspects： distance,velocity and azimuth. The signal separation method adopts adaptive minimum variance distortionless responses（ MVDR） filter which filters the multi-target echo signals in space,thus the required target signal will be effectively separated. Simulation on echo signals of linear frequency modulation（ LFM） radar shows the feasibility of the proposed method,thus providing a valuable scheme for the development of target recognition devices and interference suppression.
出处
《科学技术与工程》
北大核心
2016年第7期146-150,共5页
Science Technology and Engineering
关键词
LFM体制雷达
信号分离
自适应空间滤波
干扰抑制
LFM radar systems
signal separation
adaptive spatial filtering
interference suppression
