Acoustic target doppler simulator

Details Acoustic target doppler simulator Acoustic target doppler simulator

1990-03-28

1991-01-22

Tarcza, Thomas H.

Education and demonstration

Detection or range determination of distant object by...

Sonar

367 1, G09B 900

Patent

active

049867555

ABSTRACT:
It is useful to a sonar instructor to have a device which simulates Doppler hifting of recorded sonar signals. Such a device can consist of a digitizer operating at a fixed rate storing data in RAM. A variable read rate is calculated based on the desired Doppler shifting. Data are read from RAM at a variable rate higher or lower than the fixed rate and converted D to A before being sent to the student sonar operator.

REFERENCES:
patent: 3713081 (1973-01-01), Murpharee
patent: 4086560 (1987-04-01), Johnston et al.

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