摘要
线性调频(LFM)信号是高分辨率雷达的主要信号形式之一,通过分析LFM雷达信号实现距离高分辨率成像的原理,针对杂波和噪声对雷达回波信号的影响,提出了利用基于特征分解功率谱估计的方法进行频率估计,从而实现LFM雷达信号的距离成像的算法。仿真结果表明,该方法对低信噪比情况下的目标距离一维成像是有效的。
The linear frequency modulation（LFM） signal is one of the main signal forms of the high resolution radar.By analysis for the principle of the LFM radar signal to realize the high range resolution profile and the impact of clutter and noise over target echo signal,we propose a method of using spectrum estimation based on the characteristic decomposition to estimate the frequency and realize the LFM signal range profile.The simulation results prove that this method to the goal 1-D range profile is effective under low signal-to-noise ratio conditions.
出处
《电子设计工程》
2012年第14期113-115,共3页
Electronic Design Engineering
关键词
线性调频
特征分解
谱估计
距离成像
linear frequency modulation
characteristic decomposition
spectrum estimation
range profile
