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A New Velocity Compensation Method Based on Range Profile in Stepped-Frequency Radar
Author(s): WU Bo, PAN Ming-hai
Pages: 267-
271
Year: 2009
Issue:
4
Journal: Radar Science and Technology
Keyword: 步进频率; 散射中心模型; 距离像; 速度补偿;
Abstract: 建立了飞机目标的三维几何模型和离散冲激响应模型,给出了步进频率雷达多散射中心目标的回波数学模型,推导了其相参合成一维距离像原理.为补偿目标因径向速度对合成距离像峰值时移和能量发散,提出了一种适合工程应用的速度补偿方法.该方法在最小脉组相位差分法之前先使用互相关函数FFT方法对目标速度进行粗估计,确定了速度估计范围后再以最小脉组相位差分为准则搜索精确速度,从而大大减小了搜索工作量,有利于实时处理.仿真实验表明,该方法具有抗噪性能好、估计精度高等优点.
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