System for canceling interferers from broadband active sonar signals using adaptive beamforming methods
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United States of America Patent
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May 2, 2000
Grant Date -
N/A
app pub date -
Mar 4, 1999
filing date -
Mar 9, 1998
priority date (Note) -
Expired
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Abstract
An adaptive beamforming system for broadband sonar with a convergence time on the order of the pulse duration and effective interference nulling capabilities which enhance desirable echoes. The method uses an element based time implementation algorithm in which beam data that is formed in the direction of each interferer is successively subtracted from the element data using an adaptive FIR filter. The system can be applied to impulsive source sonar data and passive sonar data.
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