RF (including GNSS) signal interference mitigation system and method
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United States of America Patent
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Nov 25, 2014
Grant Date -
Jun 6, 2013
app pub date -
Dec 4, 2012
filing date -
Dec 4, 2011
priority date (Note) -
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Abstract
An RF (e.g., GNSS) interference mitigation system and method uses a switchable bank of filters for selectively blocking signals in predetermined bandwidths based on detecting strong, interfering signals with an interference detection circuit including a sniffer antenna. A low-strength RF (e.g., GNSS) system can be combined with a spectrally-close high-strength, telecommunications receiver system for cooperative control. Alternatively, an RF receiver can detect tones, changes in DC bias or level changes to activate a filter selection switch.
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