Coherent Acoustic Communications During the Littoral Warfare Advanced Development 98-1 and SCV-97 Experiments
Abstract
Coherent acoustic communication experiments were performed during two Littoral Warfare Advanced Development (LWAD) exercises. The first exercise, the 1997 System Concept Validation (SCV-97), was conducted September 1997 off the South Carolina coast. The second exercise (LWAD 98-1) was conducted in the Gulf of Mexico, 30 nmi south of Key West Florida. The Acoustic Communication (ACOMM) experiment during the SCV-97 was allotted Event 5 which included two segments, one hour each. The ACOMM waveforms were projected using a mid-frequency acoustic source (BSDS) and received at multiple platforms using sonar system AN/SQS-53C, Vertical arrays (VLA), sonobuoys (SSQ-57A), and a submerged acoustic receiver. The received signals were stored on DAT and Exabyte tapes for post experiment processing. During LWAD 98-1 the ACOMM signals were projected using a mid-frequency acoustic source (F-56). The signals were received at multiple platforms using VLA's and sonobuoys. Two receiving platforms had ACOMM modems on board, one modem was a dedicated receiver and real-time signal processor, the other modem was an alternate receiver and transmitter. When the F-56 was idle, the second modem would transmit mid-frequency or high frequency ACOMM signals. The received signals were processed in situ and stored on DAT tapes for post experiment analysis. The analysis of the SCV-97 and LWAD 98-1 experiments data show significant time-spread and a very strong multipath acoustic propagation environment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1998
- Accession Number
- ADA354046
Entities
People
- A. Al-kurd
- E. Carey
- Jeffrey A. Schindall
- T C Yang
Organizations
- United States Naval Research Laboratory