Echo simulating probe

Details Echo simulating probe Echo simulating probe

1975-03-07

1976-09-28

Tubbesing, T.H.

Communications: electrical

Selective

Intelligence comparison for controlling

343 177, G01S 740

Patent

active

039835308

ABSTRACT:
An echo probe taps power from pulses received at an input/output terminal from a distance measuring system and generates delayed simulated sonar signals at the input/output terminal which have substantially the same frequency as the carrier frequency of the distance measuring system. Control circuitry produces spaced first and second control signals having different characteristics from one another in response to a received pulse from the distance measuring system appearing at the input/output terminal and actuates carrier frequency oscillator circuitry to generate the simulated sonar signals. Circuitry is provided for controlling the delay between the received pulse and the simulated sonar signals and also to determine the pulse widths of the first and second control signals and the spacing therebetween. Level control circuitry regulates the amplitude of the simulated first and second sonar signals. Indicating circuitry provides an indication of the power level of the pulse signal received at the input/output terminal.

REFERENCES:
patent: 2706285 (1955-04-01), Scott
patent: 3149284 (1964-09-01), Kishinsky
patent: 3185985 (1965-05-01), Child et al.
patent: 3713148 (1973-01-01), Cardullo et al.
patent: 3789352 (1974-01-01), Forsyth

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