Fast forward scatter Shadow Inverse Synthetic Aperture Radar imaging algorithm based on phase compensation

Chang Jiang Liu, Cheng Hu*, Tao Zeng, Chao Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The numerical calculation of forward scatter Shadow Inverse Synthetic Aperture Radar (SISAR) imaging is usually performed by the Fresnel numerical integral which is complicated and time consuming. To improve the calculation speed, the fast SISAR imaging method is investigated. Firstly, a fast imaging method based on the Fast Fourier Transform (FFT) is proposed while the phase errors introduced by the FFT are compensated. Then, through the analysis of the spectrum on the motion compensated signal, the sampling law for SISAR imaging is given, indicating that signals used for imaging can be sampled at a rate much lower than the Nyquist sampling rate. Simulation results show that the proposed fast imaging method can give accurate profiles and significantly reduce the computation, which is of practical meaning in engineering application.

Original languageEnglish
Pages (from-to)2294-2299
Number of pages6
JournalDianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
Volume37
Issue number10
DOIs
Publication statusPublished - 1 Oct 2015

Keywords

  • Fast Fourier Transform (FFT)
  • Forward scatter radar
  • Nyquist sampling rate
  • Phase compensation
  • Shadow Inverse Synthetic Aperture Radar (SISAR)

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