Journal of Jishou University(Natural Sciences Edition)

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Imaging Method for Squint SAR with Sparse Down Sampling Data

CHEN Yichang,HU Jing   

  1. (1.School of Information and Navigation,AFEU,Xi′an 710077,China;2.College of Business,Jishou University,Jishou 416000,Hunan China)
  • Online:2016-11-25 Published:2016-12-13


A novel squint synthetic aperture radar imaging method with down sampling echo is proposed to solve the problem of huge SAR data transmission and storage.In this method,the echo is under-sampling in the azimuth,and the migration correction and range pulse compression are firstly performed by traditional Rang-Doppler algorithm,and then the azimuth focusing is completed by smoothed l0 algorithm according compressed sensing theory.This method can effectively reduce the amount of SAR echo data in sparse scenes,and obtain high resolution 2D imaging results with only 25% of the traditional data size.

Key words: squint synthetic aperture radar, range-Doppler algorithm, compressed sensing, down sampling

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