Range Scaling Compensation Method Based on STOLT Interpolation in Broadband Squint SAS Imaging

WANG Jinbo; TANG Jinsong; ZHANG Sen; ZHONG Heping

doi:10.11999/JEIT171068

Volume 40 Issue 7

Jul. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(7): 1575-1582

WANG Jinbo, TANG Jinsong, ZHANG Sen, ZHONG Heping. Range Scaling Compensation Method Based on STOLT Interpolation in Broadband Squint SAS Imaging[J]. Journal of Electronics & Information Technology, 2018, 40(7): 1575-1582. doi: 10.11999/JEIT171068

Citation:

WANG Jinbo, TANG Jinsong, ZHANG Sen, ZHONG Heping. Range Scaling Compensation Method Based on STOLT Interpolation in Broadband Squint SAS Imaging[J]. Journal of Electronics & Information Technology, 2018, 40(7): 1575-1582. doi: 10.11999/JEIT171068

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Range Scaling Compensation Method Based on STOLT Interpolation in Broadband Squint SAS Imaging

doi: 10.11999/JEIT171068

WANG Jinbo^① TANG Jinsong^② ZHANG Sen^② ZHONG Heping^②

Funds:

The National Natural Science Foundation of China (61671461, 41304015)

Received Date: 2017-11-16
Rev Recd Date: 2018-04-09
Publish Date: 2018-07-19

Abstract

Abstract

Considering the problem of large squint synthetic aperture sonar imaging, the analytical expression of the wavenumber spectrum is analyzed in detail in the radial and azimuth wavenumber fields under the wide-band high-squint conditions. The spectrum winding and shrink in the distance wavenumber fields after the Stolt interpolation are pointed out, and the reduced relative distance between the target in the imaging result is also indicated, then the Stolt interpolation method for distance wavenumber spectrum winding is given. The concept of range wavenumber scaling factor is proposed, the method of compensating the scaling factor and the spectrum winding in the distance space are given. Finally, the problem of range scaling caused by Stolt interpolation under large oblique angle is solved by compensating the distance variable in distance space. Point object simulation data and simulated echo data processing verify the correctness and validity of the proposed method.
- Synthetic Aperture Sonar (SAS) imaging、Broadband、Squint、algorithm、Range wavenumber scaling factor,

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References(16)

References

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