Continuous Active Sonar Signal Processing
localization systems utilize a traditional pulse type sonar approach. A
low power alternative, which would be more environmentally
friendly toward marine mammals while maintaining
required performance, is desired. Continuous wave systems that operate
at lower average power could provide a solution to these requirements.
Continuous tracking will also be possible, resulting in potentially
more accurate localization of the target. Doppler effects can be
exploited more completely with continuous active sonar operation.
Although continuous wave systems have been used for radar applications,
their possible applicability to acoustic localization systems has never
been determined. Self-jamming, and blind speeds difficulties must be
addressed. High clutter rate continuous tracking must be developed.
Signal Systems Corporation’s approach is to emphasize the signal
processing aspects of continuous active sonar (CAS). This allows us to
address, in Phase I, the high-risk elements of self-jamming, blind
speed and tracking issues. We will develop waveforms, direct blast
cancellation, space-time adaptive, and track-before-detect algorithms
for CAS operation. We will extend our existing multistatic simulations
to assess the applicability of CAS operation to acoustic localization.
We will demonstrate direct blast mitigation techniques in Phase I using
air-coupled and underwater data.
Benefits: This technology can lead to improved ASW
operations that utilize multistatic sonar. Improvements to
enviornmental impact and target localization are anticipated.
Commercial products will include more power efficient motion detectors.
For more information, contact us.