Interference cancellation system for location and direction finding
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United States of America Patent
Stats
-
May 16, 2017
Grant Date -
Aug 7, 2014
app pub date -
Feb 7, 2014
filing date -
Feb 7, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Systems and methods for cancelling interference while performing direction/location. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by −180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal. Direction and/or location finding techniques can be applied to received signals during and/or after interference cancellation.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 13 Citation Count
- G01S Class
- 79.51 % this patent is cited more than
- 8 Age
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 16, 2024 |
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