Stochastic Radiation Radar 3-D High Resolution Imaging Technique

Abstract

Scene surveillance radar, which generates radar stochastic radiation field with time and space to obtain more observation information, plays a significant role in disaster monitoring and environmental security. To explore its three-dimensional (3-D) imaging capabilities, in this paper, we propose an echo rearrangement super-resolution imaging method to achieve 3D high resolution imaging for SRR. Because the echo of SRR is uncorrelated along sampling time, we adjust the conventional intrapulse frequency hopping to interpulse frequency hopping. In this way, the proposed method can improve the imaging resolution by echo rearrangement utilizing the noncorrelation with time of stochastic radiation field. The 3-D image provides the scene reflectivity estimation along polar coordinate system including pitch, azimuth and space distance. Simulation results are given to illustrate the performance of the proposed method.