HIGH-RESOLUTION IMAGING UTILIZING SPACE-FREQUENCY DORT COMBINING THE EXTRAPOLATED VIRTUAL ARRAY

Authors

  • Qiang Du
  • Yaoliang Song
  • Tong Mu
  • Zeeshan Ahmad

DOI:

https://doi.org/10.1590/2179-10742017v16i3983

Keywords:

Time-reversal (TR) imaging, the decomposition of the timereversal operator (DORT), Space-frequency DORT (SF-DORT), Extrapolated array, Autoregressive vector extrapolation (ARVE)

Abstract

Space-frequency DORT (SF-DORT) is an effective time-reversal (TR) imaging method due to its immunity to the noise and adaptability of complex environment. However, some potential drawbacks, such as low range and cross-range resolutions, make SF-DORT inferior to the Space-frequency MUSIC (SF-MUSIC). In this paper, we propose a novel high-resolution imaging method utilizing SF-DORT combining an extrapolated virtual array created by autoregressive vector extrapolation (ARVE). In this way, the aperture of the TR array is extended significantly and the drawbacks associated with SF-DORT can be improved. Simulation results demonstrate that SF-DORT combining the extrapolated virtual array achieve much higher range and cross-range resolutions than without combining.

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Published

2017-08-01

How to Cite

Qiang Du, Yaoliang Song, Tong Mu, & Zeeshan Ahmad. (2017). HIGH-RESOLUTION IMAGING UTILIZING SPACE-FREQUENCY DORT COMBINING THE EXTRAPOLATED VIRTUAL ARRAY. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 16(3), 756–764. https://doi.org/10.1590/2179-10742017v16i3983

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Section

Regular Papers