步进频率雷达飞机目标距离像补偿算法

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。

A New Velocity Compensation Method Based on Range Profile in Stepped-Frequency Radar

In the paper,the three-dimensional model of plane and the discrete impulse response model are established.The math model of echo signal from a target of multiple scatters for the stepped-frequency radar is presented and the principle of synthesizing a HRRP by phase coherent integration is derived.Because of the shift of peak and divergence of energy,a velocity compensation method suitable for engineering applications is proposed.This method is to use cross correlation function FFT to estimate the target vel...