GLOBAL NAVIGATION SATELLITE SYSTEM SPOOFER IDENTIFICATION TECHNIQUE BASED ON CARRIER TO NOISE RATIO SIGNATURES
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United States of America Patent
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Issued Date -
Oct 5, 2023
app pub date -
Jun 7, 2023
filing date -
Jun 7, 2023
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Abstract
Disclosed is a technique that can provide one or more countermeasures against spoofers. An antenna, movable in space, is used to receive space vehicle (SV) signals that appear to be associated with a plurality of space vehicles of a global navigation satellite system (GNSS). SV signals are identified that have similar signal power and/or phase signatures that respectively appear to be associated with at least a first space vehicle and a second space vehicle of the GNSS. An existence of a spoofer is identified based at least in part on the identification of SV signals that have similar signal power and/or phase signatures that respectively appear to be associated with at least the first space vehicle and the second space vehicle of the GNSS.
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