Hydroacoustic communications system robust to multipath
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United States of America Patent
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May 2, 1995
Issued Date -
N/A
app pub date -
Oct 1, 1993
filing date -
Mar 24, 1993
priority date (Note) -
Expired
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Abstract
A hydroacoustic communication system employs spread spectrum to mitigate multipath interference caused by acoustic reflections off underwater surfaces and other large boundaries or acoustic discontinuities. The system is particularly beneficial for mitigating errors due to surface reflections, and for mitigating interference due to unwanted signals having a delay ranging from tens of microseconds to hundreds of milliseconds.
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