摘要
分析了目标径向运动对步进频脉冲信号目标回波的影响。该运动的存在使目标回波波形失真,因此提出了二次速度补偿法估计速度参数。该方法在采样点较少的条件下,基于初步速度估计值,以补偿精度为速度搜索的步进量,从而缩小了二次补偿的速度搜索范围,满足了速度补偿的精度要求。计算机仿真结果及性能分析表明,该方法补偿精度高,对噪声的影响具有一定的稳健性,且计算量小,便于实时处理。
The effect of target radial motion on stepping frequency pulse signals is analyzed. The analytic result shows that the echo is distorted due to the motion. For solving this problem, the quadric velocity compensation method is advanced. Under the condition of few sample points, this method could reduce the searching range based on the preliminary velocity estimation value and compensation accuracy value. So the method is satisfied with the requirement of accuracy. The simulation results and performance analysis manifest the method possesses the stability and fewer computation load, and it is convenient for real-time processing.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2009年第7期1560-1563,共4页
Systems Engineering and Electronics
基金
上海高校选拔培养优秀青年教师科研专项基金资助课题(gjd-07003)
关键词
雷达
信号处理
步进频脉冲信号
速度补偿
距离高分辨率
距离像
radar
signal processing
stepping frequency pulse signal
velocity compensation
range high resolution
range profile
