MAS Bulletin. Adaptive Noise Cancellation at Plessey
Abstract
Self-noise generated by internal machinery of the sonar platforms (surface ship or submarine) can be a limiting factor in sonar performance at slow speeds. Traditional noise reduction techniques, such as selection of quiet machinery, mount isolation, pipework isolation, etc., can do much to reduce the noise problem. However, further improvement by these techniques eventually ceases to be cost-effective. It may be these techniques eventually ceases to be cost-effective. It may then only be possible to reduce the residual noise at they array using adaptive cancellation. Adaptive cancellation of sonar self- noise removes the noise interference electronically in the sonar signals themselves, and does not involve any mechanical reduction. With current sonar processing architecture, the cancelling can be done at comparatively low cost by the addition of extra vector processors either pre-or post-beamformer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1989
- Accession Number
- ADA270696
Entities
Organizations
- Office of Naval Research