V形布置深水多波束声呐测深方法改进

打开文本图片集

关键词：多波束测深声呐；V形布置；测深方法；分扇区反卷积；目标回波区间确定 中图分类号：O427.9 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.06.10

Abstract：An improved bathymetry method based on sector-divided deconvolution and target echo interval determination is proposed to address the issue of V-shaped deep-water multibeam echo sounder（MBES） receiving beam width being wider than that of T-shaped sonar with the same scale，leading to poor bathymetry effect in the mirror echo region of seabed.This method improves the bathymetryaccuracyand resolution of the mirror echo region of the seabed by processing the conventional beamforming（CBF）output through the sectordivided deconvolution algorithm，resulting inareduction of thereceiving beam-width and sidelobe level. Additionally，the high computing load caused by the sector-divided deconvolution algorithm is decreased by using the multi-detection algorithm to determine the target echo intervalof the transmited sector based on the CBF output. The simulation results demonstrate that，in comparison to conventional bathymetry methods，the proposed method enhances bathymetry resolutionand yields more distinct shapes and images of submarine targets.On the other hand，in various scenarios of seabed terrain，the accuracyof bathymetry is enhanced，with on improvement of exceeding 70% when compared to conventional bathymetry methods. The calculation eficiency is significantlyincreased byusing multiple detectionalgorithms to determine the targetecho interval beforehand. In various scenarios involving seabed terrain，the calculation time increase rate exceeds 96% ， making the method convenient for subsequent real-time application.The sea test data also demonstrates the viability of the proposed method in real-world engineering applications，and it improves sounding accuracy over the conventional bathymetry method by 37.66% ·

Keywords：multibeam echo sounder（MBES）; v -shaped installation；bathymetry method；sector-divided deconvolution；target echo interval determination

0 引言

多波束测深声呐（multibeamechosounder，MBES）是目前最重要的水深测量设备[1-4]。（剩余12949字）