JPAnalytics proposes a methodology to develop the Compact Directional Acoustic Source (CDAS) for use on UUVs. The CDAS will enable underwater acoustic communications nodes to improve network communications performance by reducing Multiaccess Interference (MAI) in communications networks, improve single link communications performance by reducing multipath interference that manifests itself as Intersymbol Interference (ISI) and reduce the counterdetection vulnerability of the communications system thus improving the clandestine communications capability of the system. The proposed method will be used to develop candidate solutions in three classes of CDAS devices. Trade studies will be conducted using JPAnalytics analysis tools to optimize device parametersin each of the device classes.
Benefit: In addition to the improvements in communications systems performance detailed in the Abstract, the family of CDAS devices developed under the proposed research will enable power reduction and reduce the acoustic footprint of undersea communication systems. This will reduce the impact of these systems on marine organisms and enable acoustic systems to operate for longer periods of time on limited. Commercial applications of the CDAS devices includes undersea industrial and scientific activities involving untethered or remote devices.
Keywords: Compact Directional Acoustic Source, Compact Directional Acoustic Source, underwater acoustics, Directional Transmission, beamforming, underwater acoustic communications
