基于相干因子的多波束相位拟合区间估计方法

doi:10.12305/j.issn.1001-506X.2026.06.01

系统工程与电子技术 ›› 2026, Vol. 48 ›› Issue (6): 1789-1799.doi: 10.12305/j.issn.1001-506X.2026.06.01

基于相干因子的多波束相位拟合区间估计方法

王辰歌¹^,²(), 刘晓东¹^,³^,*(), 王舒文¹

1. 中国科学院声学研究所海洋声学技术实验室，北京 100190
2. 中国科学院大学电子电气与通信工程学院，北京 100049
3. 中国科学院声学研究所声学与海洋信息全国重点实验室，北京 100190

收稿日期:2025-05-09 修回日期:2025-09-08 出版日期:2026-06-25 发布日期:2025-11-25
通讯作者: 刘晓东 E-mail:wangchenge@mail.ioa.ac.cn;liuxd@mail.ioa.ac.cn
作者简介:王辰歌（2000—），女，博士研究生，主要研究方向为水声信号处理、多波束海底探测
王舒文（1987—），女，副研究员，硕士，主要研究方向为水声信号处理、多波束海底探测

Estimation method for the phase fitting interval in multibeam echosounder based on coherence factor

Chenge WANG¹^,²(), Xiaodong LIU¹^,³^,*(), Shuwen WANG¹

1. Laboratory of Ocean Acoustics Technology，Institute of Acoustics，Chinese Academy of Sciences， Beijing 100190，China
2. School of Electronic，Electrical and Communication Engineering，University of Chinese Academy of Sciences，Beijing 100049，China
3. State Key Laboratory of Acoustics and Marine Information，Chinese Academy of Sciences，Beijing 100190，China

Received:2025-05-09 Revised:2025-09-08 Online:2026-06-25 Published:2025-11-25
Contact: Xiaodong LIU E-mail:wangchenge@mail.ioa.ac.cn;liuxd@mail.ioa.ac.cn

摘要/Abstract

摘要：

针对多波束测深中倾斜波束处测深质量易受强能量干扰问题，提出一种基于接收通道相干性的相位拟合区间估计方法。首先，计算预成波束时延后指定通道间的相位相干因子并设定门限。然后，在各波束的深度时间门限内根据相干因子估计拟合区间窗长和搜寻范围。最后，在区间搜寻范围内采用逐点法确定拟合区间最终位置并估计波达时间。1000 m和5500 m深度海域数据验证表明，相较于子阵相关系数法，通道相干因子法使有效测深点数分别增加了8.5%和11.86%，在强能量干扰和低信噪比的边缘处给出了更好的结果，覆盖宽度得到提升，具有很好的鲁棒性和抗干扰能力。

关键词: 多波束测深系统, 旁瓣干扰, 相位法, 拟合区间, 相位相干性

Abstract:

Aiming at the problem that the sounding quality at inclined beams is vulnerable to strong energy interference in multibeam echosounders, a fitting interval estimation method based on the phase coherence of the receiving channels is proposed. Firstly, the phase coherence of designated channels with preformed beam delay is counted and the coherence factor threshold is set. Secondly, estimate the fitting interval length and search range according to the coherence factor within the depth time threshold of each beam. Finally, the final fitting interval position is determined point by point in the interval search range and the time of arrival is estimated. Compared with the subarray correlation coefficient method, this method increases the numbers of effective sounding points by 8.5% and 11.86% in areas with depths of 1000 m and 5500 m respectively, giving better sounding results at regions of strong energy interference and edges with low signal-to-noise ratio. The channel coherence factor has good robustness and anti-interference capability, enhancing the coverage width significantly.

Key words: multibeam echosounder, sidelobe interference, phase detection, fitting interval, phase coherence

中图分类号:

TN 911.7

王辰歌, 刘晓东, 王舒文. 基于相干因子的多波束相位拟合区间估计方法[J]. 系统工程与电子技术, 2026, 48(6): 1789-1799.

Chenge WANG, Xiaodong LIU, Shuwen WANG. Estimation method for the phase fitting interval in multibeam echosounder based on coherence factor[J]. Systems Engineering and Electronics, 2026, 48(6): 1789-1799.

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基于相干因子的多波束相位拟合区间估计方法

Estimation method for the phase fitting interval in multibeam echosounder based on coherence factor

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