基于单帧调频步进脉冲串的高速目标运动补偿算法  

A Motion Compensation Algorithm for High-speed Targets Based on One Single Burst of LFM Stepped-frequency Pulses

作　　者：刘二平 洪永彬 马瑞平[2] 

机构地区：[1]海军驻保定地区航空军事代表室,河北保定071000 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2017年第8期14-17,26,共5页Radio Engineering

基　　金：国家自然科学基金资助项目(61401024)

摘　　要：调频步进信号是一种重要的高分辨信号形式。在调频步进雷达中,目标运动会引起合成距离像畸变和信噪比增益损失。分析了目标运动对合成高分辨距离像的影响,提出了一种基于脉间脉冲重复时间(PRT)设计和对比度的高速目标运动补偿算法,只需利用单帧调频步进脉冲串,便可同时对径向速度和径向加速度进行补偿,特别适用于高速运动目标的情况。仿真结果表明,该算法对目标特性和信噪比不敏感,具有很强的鲁棒性。The LFM stepped-frequency signal is an important type of high-range-resolution waveform.In LFM stepped-frequency radar,the target motion can cause range profile distortion and signal-to-noise ratio gain loss.In this paper,the effects of target motion on synthetic high-resolution range profile are analyzed,and a novel motion compensation algorithm for high-speed targets based on interpulse pulse repetition time（PRT） design and contrast is put forward.The new algorithm needs only one single burst of LFM stepped-frequency pulses to compensate for both radial velocity and radial acceleration,thus it is highly applicable to the situation concerning high-speed targets.Simulation results show that the new algorithm is robust,and it is not sensitive to target characteristics and signal-to-noise ratio.

关 键 词：调频步进雷达 运动补偿 脉间脉冲重复时间设计 对比度 

分 类 号：TN957.51[电子电信—信号与信息处理]