An Autonomous Atomic Clock-Based Underwater Acoustic Vector Sensor Platform with In-Buoy Processing and Reporting Capabilities
Abstract
Underwater acoustic sensor units are proposed for the purpose ofsupporting current and future research initiatives requiring synchronous directional point measurements of the underwater soundscape. Each unit consists of a three-axis directional transducer (vector sensor), an omnidirectional hydrophone, signal conditioning amplifiers, a data recorder with an atomic clock time base, an acoustic communications modem and transducer, an electronics pressure vessel, a pressure-tolerant battery power supply, and recovery hardware. The atomic clock time base in each unit permits accurate timing for coherent acoustical processing between units and for correlation with concurrent environmental observations. The onboard data recorder is also capable of executing real-time data processing algorithms on the acoustical data, allowing for in-buoy data processing and message reporting via the acoustic modem. These extended measurement capabilities will fill a current need for easily deployed, autonomous, persistent, coherent, and directional measurements of the underwater sound field. This proposal will purchase the equipment and fund assembly and calibration.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 04, 2018
- Source ID
- N000141812824
Entities
People
- Jason D Sagers
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin