雷达平台运动特性及其对一维距离像影响分析  

Radar Platform Motion Characteristics and Their Effect on Range Profile

作　　者：刘峥[1,2] 张翼[3] 付强[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073 [2]北京航天指挥控制中心,北京100094 [3]北京系统工程研究所,北京100101

出　　处：《国防科技大学学报》2011年第3期126-133,共8页Journal of National University of Defense Technology

摘　　要：分析运动特性对雷达一维距离像的影响是研究运动平台下雷达运动补偿、检测、识别和跟踪等方法的前提。针对这一问题,首先分析了雷达平台的运动特性,推导了运动平台下雷达线性调频信号回波模型,定量地分析了运动特性对一维距离像的影响,给出通常雷达平台的运动特性和时宽带宽积条件下,平台微动对径向运动速度、加速度的影响可以忽略;平台平动是影响一维距离像的主要因素,平台微动对一维距离像影响不大;平动加速度对目标一维距离像的影响可以忽略的结论。最后通过仿真实验验证了分析结论的正确性。Analysis of how motion characteristics of radar platform influence imaging is the premise of researching on motion compensation, detection, recognition and tracking methods. Aiming at the problem of radar platform motion characteristics and its effect on range profile, the study firstly analyzed the motion characteristics of radar platform, gave an LFM signal model based on motion platform, and quantitatively analyzed the influence on range profile which result from the motion characteristics of the radar platform. It is concluded that, under the condition of general radar platform, the micro-motion of platform influencing the radial velocity^acceleration can be ignored; the translational-motion of platform is the main factor influencing the range profile, the micro-motion of platform have little influence on range profile; radial acceleration influencing the range profile can be ignored. Finally, the simulation results verify the correctness of conclusion.

关 键 词：雷达平台 运动特性 一维距离像 影响分析 微动 

分 类 号：TN957[电子电信—信号与信息处理]