Surface Acoustic Signal Defader
US4219888.pdf (461.0Kb)Abstract
A surface acoustic signal defader for optimizing the
signal received from underwater sound scattered from
the ocean surface. The bandwidth of the underwater
sound source is monitored and the frequency of maximum
signal strength is identified. When the maximum
signal strength frequency fades a predetermined
amount, reception is switched to the signal of maximum
anti-correlation. This process is continuous such that
when the new frequency fades the anti-correlation process
will determine the optimum frequency for the new
fading condition, thus resulting in optimum reception of
surface scattered underwater sound.
Description
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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