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An efficient method for the simulation of multireceiver SAS raw signal

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Abstract

The raw echoed signal considered to be an input of signal processors of multireceiver synthetic aperture sonar (SAS) system plays an important role in multireceiver SAS imaging algorithms and system design. Traditional echo simulation methods such as time-domain algorithm are characterized by time-consuming. To improve the simulation efficiency of SAS echoed signal, this paper proposes a novel method to simulate the SAS raw echo. The presented method firstly calculates the time delay corresponding to each target. Based on the spectrum of transmitted signal in the Fourier domain, the spectrum of echoed signal can be accurately obtained by the complex multiplication between the spectrum of transmitted signal and the phase shifting related to the time delay. This operation is repeatedly conducted for each target, and the final echo can be obtained by the inverse Fourier transformation. Compared to traditional echo simulation algorithms, the presented method can significantly improve the simulation efficiency of echoed signal without loss of performance. At last, the simulations well demonstrate that the presented method is highly efficient compared to traditional methods.

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Data availability

The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The work described in this article was partially supported by the National Key Laboratory Foundation under Grant 9140C290401150C29132.

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  1. Whale Wave Technology Inc., Kunming, 650200, China

    Xuebo Zhang

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  1. Xuebo Zhang
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Correspondence to Xuebo Zhang.

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Zhang, X. An efficient method for the simulation of multireceiver SAS raw signal. Multimed Tools Appl 83, 37351–37368 (2024). https://doi.org/10.1007/s11042-023-16992-5

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