远程高速目标高分辨距离成像新方法

摘要

文中提出了一种基于步进频率信号的高分辨距离成像方法，能够同时获得远程高速目标的无模糊距离和无模糊速度，并实现其高分辨距离成像。根据步进频率信号的运动目标回波模型呈现多分量 LFM信号的特点，采用时域解线性调频算法对回波进行多普勒处理，以在很大的测量范围内获得无模糊的速度。对回波信号进行运动补偿，从而获得远程高速目标的一维高分辨距离像。%A high resolution range imaging method based on SFPR is proposed.This technology can obtain large unambiguous velocity and unambiguous range simultaneously.According to the characteristics that the echo model of moving target in SFPR can be expressed as a multi -component LFMsignal,DSE method is adopted to perform Doppler processing and obtain the target's unambiguous velocity by which the motion in echo signal is compensated.Thus the HRRP of the target with high -speed and long -range is obtained.