Range-Doppler Imaging Algorithm for Multireceiver Synthetic Aperture Sonar

ZHANG Xuebo; WANG Yanmei; YANG Jiachong; SHEN Wenyan; SUN Haixin

doi:10.11999/JEIT231160

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ZHANG Xuebo, WANG Yanmei, YANG Jiachong, SHEN Wenyan, SUN Haixin. Range-Doppler Imaging Algorithm for Multireceiver Synthetic Aperture Sonar[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT231160

Citation:

ZHANG Xuebo, WANG Yanmei, YANG Jiachong, SHEN Wenyan, SUN Haixin. Range-Doppler Imaging Algorithm for Multireceiver Synthetic Aperture Sonar[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT231160

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Range-Doppler Imaging Algorithm for Multireceiver Synthetic Aperture Sonar

doi: 10.11999/JEIT231160

1.
Whale Wave Technology Inc., Kunming 650000, China
2.
School of informatics, Xiamen University, Xiamen 361005, China

Funds: The National Natural Science Foundation of China (61971362, 62271426), The Natural Science Foundation of Fujian Province (2020J01003)

Received Date: 2023-10-25
Rev Recd Date: 2024-01-25

Available Online: 2024-02-29

Abstract

Abstract

Traditional multireceiver Synthetic Aperture Sonar (SAS) imaging algorithms based on Phase Center Approximation (PCA) neglect the spatial variance of approximation error in the azimuth dimension. The distortion would be introduced in the focused results of distributed. To solve this problem, a two-way slant range considering the azimuth variance of approximation error is deduced based on the geometry models of transmitter/receiver bistatic sampling and PCA sampling. The system function in the 2D frequency domain is further decomposed into transmitter/receiver bistatic deformation term and quasi monostatic term. Based on that, the complex multiplication and interpolation are adopted to compensate the bistatic deformation term. Then, the range-Doppler imaging algorithm is used to focus the targets. Compared to traditional methods, much smaller appropriation error across the whole mapping swath is obtained by using the proposed. Besides, the position deviation in the azimuth dimension is not introduced by the proposed method. The imaging result which is identical to practical target position can be obtained.
- Multireceiver Synthetic Aperture Sonar (SAS),
- Phase Center Approximation(PCA),
- Azimuth spatial variance,
- Range-Doppler algorithm

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References(19)

References

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