海底底质分类反向散射强度三维概率密度法

doi:10.11947/j.AGCS.2019.20170631

测绘学报 ›› 2019, Vol. 48 ›› Issue (1): 124-131.doi: 10.11947/j.AGCS.2019.20170631

海底底质分类反向散射强度三维概率密度法

金绍华^1,2, 李家彪¹, 吴自银¹, 边刚², 崔杨²

1. 国家海洋局海底科学重点实验室, 浙江杭州 310012;
2. 海军大连舰艇学院军事海洋与测绘系, 辽宁大连 116018

收稿日期:2017-11-10 修回日期:2018-06-15 出版日期:2019-01-20 发布日期:2019-01-31
通讯作者: 吴自银 E-mail:ziyinwu@163.com
作者简介:金绍华(1978-),男,博士,副教授,研究方向为海洋大地测量及海洋测绘数据处理。E-mail:jsh_1978@163.com
基金资助:
国家自然科学基金（41876103；41576105；41374018；41830540）

3D histogram of backscatter strength for seafloor substrates classification

JIN Shaohua^1,2, LI Jiabiao¹, WU Ziyin¹, BIAN Gang², CUI Yang²

1. Key Laboratory of Submarine Geosciences of SOA, Hangzhou 310012, China;
2. Department of Military Oceanography and Hydrography and Cartography, Dalian Naval Academy, Dalian 116018, China

Received:2017-11-10 Revised:2018-06-15 Online:2019-01-20 Published:2019-01-31
Supported by:
The National Natural Science Foundation of China (Nos. 41876103;41576105;41374018;41830540)

摘要/Abstract

摘要：

反向散射强度随入射角变化信息蕴含海底底质特性，是多波束海底底质分类的重要数据源。目前，多波束海底底质分类主要提取平均反向散射强度随入射角的变化信息或基于声呐图像，没有综合考虑两者的相关信息。本文综合考虑平均反向散射强度随入射角变化信息及其概率密度分布，绘制三维概率密度图，提出了基于反向散射强度三维概率密度图的海底底质分类方法。实例计算结果表明：该方法能直观表达多波束条带覆盖区内不同海底底质类型的数量，有效判断不同海底底质类型的边界，实现海底底质类型的快速识别。

关键词: 多波束, 反向散射强度, 海底入射角, 三维概率密度图, 海底底质分类

Abstract:

Backscatter strength angular response embodies the seafloor substrates classification, which are the important data sources for multibeam seafloor classification. At present, multibeam seafloor classification mainly extract mean backscatter strength angular response or sonar image without considering the relevant information of two aspects. This paper comprehensively analyzes backscatter strength angular response and probability distribution of backscatter strength, portraits 3D histogram, and proposes ways of seafloor classification based on 3D histogram of backscatter strength. Results show that the method can directly express different numbers of seafloor classification within multibeam swath, effectively judge the boundaries and realize the fast identification of different seafloor substrates.

Key words: multibeam, backscatter strength, seafloor incidence angle, 3D histogram, seafloor substrates classification

中图分类号:

P229

金绍华, 李家彪, 吴自银, 边刚, 崔杨. 海底底质分类反向散射强度三维概率密度法[J]. 测绘学报, 2019, 48(1): 124-131.

JIN Shaohua, LI Jiabiao, WU Ziyin, BIAN Gang, CUI Yang. 3D histogram of backscatter strength for seafloor substrates classification[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(1): 124-131.

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海底底质分类反向散射强度三维概率密度法

3D histogram of backscatter strength for seafloor substrates classification

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