Title :
Study on time domain reconstruction from non-uniform azimuth sampling in SAR signal
Author :
Jiang, Yi ; Li, Chunhou ; Wu, Xinwei
Author_Institution :
PLA, Hefei
Abstract :
Wide-swath and high-resolution impose contradicting requirements on synthetic aperture radar (SAR) system design and parameters choice. To solve non-uniform sampling in the azimuth in the displaced phase centers multiple azimuth beams (DPCMAB) system, the time domain reconstruction algorithm based on the generalized sampling theorem is proposed, and a set of analytical formulas on the quadruple channels DPCMAB system is derived in detail. In addition, the performances and computational complexity of this algorithm are discussed. Theoretical analysis and simulation results show that the time domain reconstruction algorithm can eliminate the spurious image from non-uniform sampling and suppress paired echo below -60 dB.
Keywords :
computational complexity; sampling methods; synthetic aperture radar; SAR signal; computational complexity; displaced phase centers multiple azimuth beams; nonuniform azimuth sampling; synthetic aperture radar; time domain reconstruction; Algorithm design and analysis; Azimuth; Computational complexity; Image analysis; Image reconstruction; Image sampling; Reconstruction algorithms; Sampling methods; Synthetic aperture radar; Time domain analysis; SAR; displaced phase center antenna (DPCA); non-uniform azimuth sampling; paired echo; time domain reconstruction;
Conference_Titel :
Synthetic Aperture Radar, 2007. APSAR 2007. 1st Asian and Pacific Conference on
Conference_Location :
Huangshan
Print_ISBN :
978-1-4244-1188-7
Electronic_ISBN :
978-1-4244-1188-7
DOI :
10.1109/APSAR.2007.4418714
