Boots – shoes – and leggings
Patent
1978-06-23
1981-01-27
Atkinson, Charles E.
Boots, shoes, and leggings
343100SA, 364715, G01S 380, H04B 1100
Patent
active
042479002
ABSTRACT:
A system for forming a beam of radiant energy which is incident upon or radiated from an array of radiating elements such as sonar transducers. As a wavefront progresses across the array, samples of signals received by individual ones of the transducers are selected in accordance with specific beams to be formed, the selected samples being summed together through a sequence of partial summations until a complete summation of a sample of a beam is obtained. The sequence of partial summations is initiated successively for each output sampling interval. For a long array, wherein the transit time of a wavefront across the array is longer than the intersample interval, a plurality of the sequences are generated concurrently. All partial sums for all beam samples are generated periodically at the output sampling rate and are stored in a memory. The address of the memory is permuted at a rate of one memory section per output sample interval whereby a presently calculated partial sum is combined with the partial sum of an earlier sequence.
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patent: 3717756 (1973-02-01), Stitt
patent: 3822404 (1974-07-01), Croisier et al.
patent: 4014023 (1977-03-01), Kirkland
patent: 4025772 (1977-05-01), Constant
patent: 4062060 (1977-12-01), Nussbaumer
patent: 4063082 (1977-12-01), Nussbaumer
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patent: 4093989 (1978-06-01), Flink et al.
patent: 4107685 (1978-08-01), Martin et al.
Furtado John
Martin Walter J.
Arnold Herbert W.
Atkinson Charles E.
Bartlett Milton D.
Chin Gary
Pannone Joseph D.
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