Journal of Applied Sciences ›› 2014, Vol. 32 ›› Issue (2): 133-140.doi: 10.3969/j.issn.0255-8297.2014.02.004

• Signal and Information Processing • Previous Articles     Next Articles

Radar Super-Resolution Imaging Based on Compressive Sensing

DENG Zhen-miao, YE Lin-mei, FU Mao-zhong, ZHANG Yi-xiong     

  1. School of Information Science and Engineering, Xiamen University, Xiamen 361005, Fujian Province, China
  • Received:2013-03-11 Revised:2013-04-25 Online:2014-03-25 Published:2013-04-25

Abstract: Application of compressed sensing (CS) in inverse synthetic aperture radar is investigated in this paper. The radar transmits sparse probing pulses and dechirped radar echo samples that satisfy the Nyquist sampling theorem are resampled sparsely. Reconstruction is performed to these sparse samples both in range and cross-range directions to recover the whole radar echo signals containing the target characteristics. To obtain high resolution ISAR images, super-resolution processing on both range and cross-range directions is conducted on the reconstructed data. Results of processing on real radar data and simulated data show that the resolution of ISAR image can be enhanced significantly. The proposed algorithm can reduce data size and
time consumption, and is valuable for super-resolution radar image applications.

Key words:  compressed sensing (CS), radar image, reconstruction, super-resolution

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