Refocusing of moving targets in Spotlight SAR raw data

12 February 2021 Publications in International Journals 2,242 Views

2015 23nd Signal Processing and Communications Applications Conference (SIU)

Refocusing of moving targets in Spotlight SAR raw data

İ. Papila, S. Paker, M. Kartal, S. Kent

Abstract: In this paper a method for moving targets detection based on Spotlight Synthetic Aperture Radar (SAR) images is proposed and tested in simulation data. To this purpose two moving target detection schemes are considered: The first is based on a bank of Chirp Scaling Algorithms (CSAs), and the second is based on Change Detection (CD) applied to sub-images obtained by splitting the overall aperture into sub-apertures. At the next step, selecting and arranging target focusing center with a new technique based on re-centering phase computation to a reference point for each moving target. Finally Polar Format Algorithm (PFA) is applied to each re-organized raw data to obtain highly focused moving targets individually.