Multipath mitigation approach for spread spectrum ranging/positioning systems
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United States of America Patent
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Oct 21, 2003
Grant Date -
N/A
app pub date -
Aug 30, 1999
filing date -
Aug 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for mitigating multipath interference in a spread spectrum ranging/positioning system receiver is disclosed. Improved peak tracking in the presence of multipath interference is accomplished with an improved discrimiriant. The discriminant may be developed from a curvilinear function based on a minimal number of correlators. Also disclosed is an open loop measurement compensation innovation that compensates for a multipath-induced shift of the correlation function peak. The positioning system receiver may have either one or both of the mitigation features.
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