A New Method of High Resolution Range Imaging for Targets with High-speed and Long-range

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 LFM signal, 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.