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, Türkiye, 16 - 19 Mayıs 2015, ss.1346-1349 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/siu.2015.7130090
  • Basıldığı Şehir: Malatya
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1346-1349
  • Anahtar Kelimeler: Moving target detection, Spotlight Synthetic Aperture Radar (SAR), Spotlight SAR processing Algorithm, Polar Format Algorithm (PFA), Chirp Scaling Algorithm (CSA), Change Detection (CD)
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

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.