Target Recognition Based on Echo Product Spectrum
Kun Fan Zhang, Feng Wang, Tong Xin Dang, Yong Jun Zhao · Applied Mechanics and Materials · 2014
High resolution range profile (HRRP) got by discrete Fourier transform has fence effect, which will cause HRRP change with the range shift, and the HRRP features will also appear different even in the same perspective. To solve this problem, the paper proposed the echo product spectrum feature (REPSF), which has no fence effect and eliminates the influnce of random initial phase and range shift. The proposed feature makes full use of the amplitude and phase information of echo signal, and has super-resolution target identification ability. Finally, simulation results verify the correctness of the theory.