Processing of reflected signals

Details Processing of reflected signals Processing of reflected signals

G - Physics

01

S

326/12, 349/25,

G01S 7/52 (2006.01) G01S 7/526 (2006.01) G01S 15/02 (2006.01) G01S 15/96 (2006.01)

Patent

CA 1253612

ABSTRACT: THE PROCESSING OF REFLECTED SIGNALS Signal processing circuitry is disclosed for processing the echo signals of echo sounders to extract the leading edge of bottom echo components of the echo signals and to provide a reading of the average area under successive leading edges. Second and later bottom echo processing is additionally disclosed. Processing is achieved with a sample and hold circuit comprising an integrator (34), a first switch (33) for switching the required echo signal portion to the integrator, storage means (C2) for storing integrated values to be displayed, and a second switch (35) for selectively coupling values from the integrator to the storage means.

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