Fast algorithm for multiple-receiver synthetic aperture sonar imaging and six-degrees-of-freedom motion compensation

被引：0
|
作者：
Tian Z. [1 ]
Zhong H. [1 ]
Tang J. [1 ]
机构：
[1] College of Electronic Engineering, Naval University of Engineering, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 03期
关键词：
imaging technique; motion compensation; range-Doppler algorithm; six-degrees-of-freedom motion errors; synthetic aperture sonar;
D O I：
10.13245/j.hust.240309
中图分类号：
学科分类号：
摘要：
For the issue of the six-degrees-of-freedom (SDOF) motion compensation (MOCO) and the low efficiency of the point-by-point MOCO algorithm，a fast MOCO and imaging range-Doppler (RD) algorithm was proposed for the multiple-receiver synthetic aperture sonar (SAS) with the azimuth-invariant SDOF motion errors． First，the double square root (DSR) form range history was established． Secondly，the DSR form range history was approximated and retained to the fourth-order terms of the azimuth time by the method of Taylor series expansion． On this basis，an analytical two-dimensional frequency spectrum of point target response was derived using the method of series reversion． Finally，the fast MOCO and imaging algorithm was proposed，which can realize the compensation of azimuth-invariant SDOF motion errors and high-resolution imaging synchronously． The results of simulations and accurate experiment data imaging indicate the effectiveness of the proposed algorithm． © 2024 Huazhong University of Science and Technology. All rights reserved.
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页码：28 / 34
页数：6
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