Abstract
A conformal array designed for torpedo sonar has been analytically investigated using several array optimization techniques. In particular, the complex as well as the real weights which maximize the (receive) gain of this array have been computed. The incident signal is assumed to be a narrowband, plane wave; however, the noise field is assumed to be torpedo flow noise radiated within the near field of the array. A theoretical model of the covariance matrix of this noise field has been determined. A comparison is made with the (similarly optimized) planar arrays conventionally used in torpedo sonars. The results indicate that a more comprehensive criterion than array gain is required for the torpedo sonar application. Several alternative criterion are discussed.
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