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Position and shape of the surface shadow zone

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Abstract
From surface reverberation studies conducted by SACLANTCEN's Target Classification Group"C , it has been found necessary to know before any sea experiment the precise position of the first surface shadow zone. Since normal ray tracing programs usually do not answer such a question, a simple computer program has been implemented which, on a small shipborne computer, calculates within seconds: distance, extent and maximum thickness of the shadow zone as a function of the source depth. From submarine detection trials subsequently performed, it was seen that a more accurate shape of this shadow zone was desirable and an extension of the previous program is underway.

URI
http://hdl.handle.net/20.500.12489/260

Report Number
CP-5/2

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Date
1971/12

Author(s)
De Raigniac, Bernard

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CP-5_part2_DeRaigniac_PositionShapeSurfaceShadowZone.pdf (1.778Mb)

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