Target location systems

Details Target location systems Target location systems

1979-04-12

1981-02-24

Tubbesing, T. H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

343 16R, 343 172PC, 367117, G01S 1506, G01S 1306

Patent

active

042531667

ABSTRACT:
A target location system comprising a signal transmitter including a pair of signal transmitter transducers arranged in spaced apart relationship and means for driving the transducers with transmitter pulse signals at the frequencies Fo and Fo+Fb respectively which are arranged to increase progressively in frequency during each pulse to Fo+.DELTA.f and Fo+Fb+.DELTA.f respectively where .DELTA.f is equal to or less than Fb, and an echo signal receiver comprising receiving transducer means feeding a filter bank, the filter bank comprising a plurality of filters which cover in aggregate a predetermined frequency band, each filter being adapted to cover one slot or section of the band whereby the bearing of a target from which an echo signal of a transmitter pulse signal is received, is indicated in accordance with the slot or slots in which the echo signal is received.

REFERENCES:
patent: 3517389 (1970-06-01), Dausin
patent: 3798645 (1974-03-01), Baurle et al.
patent: 3924236 (1975-12-01), Earp et al.

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