Time varying gain amplifier for side scan sonar applications

Details Time varying gain amplifier for side scan sonar applications Time varying gain amplifier for side scan sonar applications

G - Physics

01

S

349/25

G01S 15/00 (2006.01) G01S 7/529 (2006.01) G01S 15/89 (2006.01)

Patent

CA 1125431

IMPROVED TIME VARYING GAIN AMPLIFIER FOR SIDE SCAN, SONAR APPLICATIONS ABSTRACT OF THE DISCLOSURE A time varying gain amplifier for a side scanning sonar system having a predetermined gain versus time relation- ship is disclosed. The gain is substantially proportional to the square of the elapsed time measured from the last sonar pulse initiating trigger signal. The amplifier in one embodiment employs a series connection of two amplifiers, each of which has a gain which varies linearly with the elapsed time.

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