Biographic Memoirs: Volume 48 contains the biographies of deceased members of the National Academy of Sciences and bibliographies of their published works. Each biographical essay was written by a member of the Academy familiar with the professional career of the deceased. For historical and bibliographical purposes, these volumes are worth returning to time and again.
This monograph develops the theory of noise mechanisms and measurements, and describes general noise characteristics and computational methods. The vast ambient noise literature is concisely summarized using theory combined with key representative results. The air sea boundary interaction zone is described in terms of nondimensional variables requisite for future experiments. Noise field coherency, rare directional measurements, and unique basin scale computations and methods are presented. The use of satellite measurements in these basin scale models is demonstrated. A series of appendices provides in-depth mathematical treatments which will be of interest to graduate students and active researchers.
This report examines the problem of developing a high speed, compact performance prediction model for use in estimating operational performance of active, surface ship sonar systems. Such a model must be suitable for use on computers typically available at Navy laboratories and Fleet shore facilities. An active sonar performance prediction model was developed. A concomitant computer program was written in FORTRAN IV and can provide detection outputs for a single system and environment in less than two minutes using a second generation computer, e.g., CDC 1604, IBM 7090, and UNIVAC 1230. This time is reduced by about one-tenth on newer machines, e.g., CDC 6500, IBM 360, and UNIVAC 1108.