Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With beam steering – scanning – or focussing
Patent
1967-10-24
1980-12-23
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With beam steering, scanning, or focussing
367126, G01S 380
Patent
active
042414318
ABSTRACT:
A passive ranging system is disclosed wherein the transducer array has its eam pattern modulated so as to match the arrival angles of the different wave fronts arriving at the array from various target distances. The beams are formed by orientating a multiplicity of readout arms at appropriate angles with respect to a recording medium which has the individual signals detected by each transducer of the array recorded thereon in different horizontal tracks. The readout arms thus simultaneously scan all of the signals associated with the arrival angles for a particular range and produce a signal whose amplitude is a measure of the probability of a target at this range.
REFERENCES:
patent: 2897351 (1959-07-01), Melton
Farley Richard A.
Sciascia R. S.
Shrago L. I.
The United States of America as represented by the Secretary of
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