摘要
线性调频信号(LFM)是雷达系统中常用来进行脉冲压缩的信号,但是压缩之后的旁瓣较高,对目标信号的检测有一定的影响。为了解决影响,提出了双向加权脉冲压缩算法,针对该算法所具有的缺陷,提出了该算法的改进算法。该改进的算法,不仅在脉冲压缩后具有比较低的旁瓣,而且还消除了原算法的缺陷--发射信号对发射端的非线性器件的影响十分敏感从而带来的失真。经过MATLAB的仿真可以得出,与传统的加窗方法相比,改进的算法具有很好地抑制旁瓣的效果。
Linear frequency modulation signal (LFM) is usually used for pulse compression in radar system, but the side lobe after compression is higher, which has a certain impact on the detection of target signal.In order to solve the problem, a bidirectional weighted pulse compression algorithm is proposed in this paper.The improved algorithm not only has a lower side lobe after pulse compression, but also eliminates the disadvantage of the original algorithm - the distortion caused by the sensitivity of the transmitting signal to the nonlinear device at the transmitting end. Through MATLAB simulation, it can be concluded that compared with the traditional window adding method, the improved algorithm has a better effect of suppressing side lobe.
作者
宁千千
Ning Qianqian(College of Computer and In formation. Hohai University, Nanjing 211100,China)
出处
《国外电子测量技术》
2019年第6期53-56,共4页
Foreign Electronic Measurement Technology
关键词
线性调频信号
脉冲压缩
旁瓣抑制
双向加权脉冲压缩
linear frequency modulation signal
pulse compression
lateral lobe inhibition
bidirectional weightedpulse compression
