Multi-beam bathymetric chart construction method based on submarine digital depth model feature extraction

US9651698B2 · kind B2 · utility

Assignee

• The Second Institute Of Oceanography, SOA · CN

Inventors

• Ziyin Wu · Hangzhou City, CN
• Jihong Shang · Hangzhou City, CN
• Shoujun Li · Shanghai, CN
• Dineng Zhao · Hangzhou City, CN
• Jieqiong Zhou · Hangzhou City, CN

Key dates

• Filing date: Jul 31, 2014
• Grant date: May 16, 2017
• Expiry date: Oct 1, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V1/38
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention discloses a multi-beam bathymetric chart construction method based on submarine digital depth model feature extraction. The method comprises the steps of: constructing a DDM (Digital Depth Model) based on raw multi-beam echo soundings; establishing a slope and second derivative composite model based on the DDM; extracting feature points based on DDM sub-blocks; querying the multi-beam depth based on the feature points; constructing the multi-beam bathymetric chart based on layers.