Continuous Active Sonars for Littoral Undersea Surveillance
| Autor: | Andrea Munafo, Gaetano Canepa, Kevin D. LePage |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Antisubmarine warfare (ASW)
autonomous underwater vehicles (AUVs) continuous active sonars (CAS) multistatic sonars signal processing medicine.medical_specialty Signal processing Anti-submarine warfare Computer science Mechanical Engineering Bandwidth (signal processing) Real-time computing Sea trial Ocean Engineering Sonar Duty cycle medicine Electrical and Electronic Engineering Marine mammals and sonar Underwater |
| Zdroj: | IEEE Journal of Oceanic Engineering. 44:1198-1212 |
| ISSN: | 2373-7786 0364-9059 |
| Popis: | Recent advances in transducer and computing technology have pushed the concept of continuous active sonar (CAS) or high duty cycle sonar as an area of interest for application to antisubmarine warfare. Unlike conventional pulsed active sonars, CAS processing aims at detecting echoes while transmitting with a nearly 100% duty cycle. This paper describes the signal processing chain developed at the Centre for Maritime Research and Experimentation (CMRE), La Spezia, Italy, for real-time CAS processing within an autonomous networked multistatic sonar system. The algorithm uses subband processing, which can potentially provide a higher target update rate than the traditional pulsed active sonar, while maintaining the same search radius. The higher rate of contact information can improve target tracking performance. Performance results are given from the COLLAB–NGAS14 sea trial where the CAS processor was deployed on two autonomous underwater vehicles (AUVs) acting as receivers of the CMRE experimental multistatic demonstrator. Results show the feasibility of the CAS concept in littoral scenarios, using AUVs as real-time receivers. |
| Databáze: | OpenAIRE |
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