Refocusing of Moving Targets in Spotlight SAR Raw Data

PAPILA I., Paker S., Kartal M., Kent S.

23nd Signal Processing and Communications Applications Conference (SIU), Malatya, Turkey, 16 - 19 May 2015, pp.1346-1349 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/siu.2015.7130090
  • City: Malatya
  • Country: Turkey
  • Page Numbers: pp.1346-1349
  • Keywords: Moving target detection, Spotlight Synthetic Aperture Radar (SAR), Spotlight SAR processing Algorithm, Polar Format Algorithm (PFA), Chirp Scaling Algorithm (CSA), Change Detection (CD)
  • Istanbul Technical University Affiliated: Yes

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.