High resolution bathymetric sonar system and measuring method for measuring the physiognomy of the seabed

US6873570B2 · kind B2 · utility

Assignee

• INSTITUTE OF ACOUSTICS, CHINESE ACADEMY OF SCIENCES · CN

Inventors

• Weiqing Zhu · Beijing, CN
• Xiaodong Liu · Beijing, CN
• Min Zhu · Los Altos Hills, US
• Feng Pan · Kunshan, CN
• Xiangjun Zhang · Beijing, CN
• Changhong Wang · Beijing, CN
• Yuling Wang · Lanzhou, CN

Key dates

• Filing date: Feb 8, 2002
• Grant date: Mar 29, 2005
• Expiry date: Feb 8, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S15/8904
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A high resolution bathymetric sidescan sonar system for measuring micro-geomorphy of the sea bottom having an underwater vehicle, an underwater electronic subsystem mounted on the underwater vehicle and containing a transmitter and a receiver, and two sonar arrays mounted symmetrically on two sides of a lower part of the underwater vehicle and being connected to the underwater electronic subsystem through a cable. Each sonar array has a transmitting linear array and three or more parallel receiving linear arrays. The parallel receiving linear arrays are arranged at equal spaces, and the space d between two adjacent parallel receiving linear arrays is λ>d≧λ/2, in which λ is a wavelength of an acoustic wave, and an operation frequency of the parallel receiving linear arrays ranges from 30 kHz to 1200 kHz.