Abstract
Current generation sonar acoustic signal processing systems operate at throughputs comparable to those in 5th generation computer systems; for example systems currently deployed operate with processing throughputs in excess of 100 million operations per second. These processing speeds are achieved using distributed processing graph networks employing hardware based primitives or macros that can be programmed to perform the basic signal processing functions. The primitive network is configured by simple control to implement complete signal processing flow graphs that define the entire sonar procesing function.
For the next generation of operational sonars system performance must be improved to counter the effects of target noise reduction and anechoic coatings. Improved performance requires the use of large area arrays, with many more processing channels and “smarter” processing such as adaptive or high resolution processing at the front end of systems and image processing methods at the display end. In addition, operational systems require comprehensive system monitoring facilities, reconfigurability and improved online maintainance and development aids. An increase in processing throughput in excess of two orders of magnitude will be necessary to provide these functions on future systems.
Advances in semiconductor and integrated circuit technology promise significant improvements in device performance, but it is unlikely that these improvements alone will provide the necessary increase in systems performance. Comparable advances are needed in the areas of algorithm development and systems architectures to fully exploit the capability of the various technologies currently being developed in various national VHPIC and VHSIC programmes.
This paper briefly reviews some of the recent developments in these fields and thier impact on digital signal processing systems for sonar applications.
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© 1985 D. Reidel Publishing Company
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Curtis, T.E. (1985). Digital Signal Processing for Sonar. In: Urban, H.G. (eds) Adaptive Methods in Underwater Acoustics. NATO ASI Series, vol 151. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5361-1_51
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DOI: https://doi.org/10.1007/978-94-009-5361-1_51
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