GPS near-far resistant receiver
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United States of America Patent
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Aug 3, 2004
Grant Date -
Nov 27, 2003
app pub date -
Sep 12, 2002
filing date -
Sep 12, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method and receiver are disclosed for mitigating or substantially canceling signal interference between signals detected at the receiver. Once a presumed interfering signal(s) is acquired, parameters are determined that allow the interferer(s) to be modeled. An orthogonal projection (for projecting onto a subspace orthogonal to that spanned by the interferer(s)) is applied to the composite of all signals (y) for thereby projecting y onto this subspace, wherein the subspace is non-orthogonal to a representation of desired (but interfered) signal of the composite signals. With the receiver properly equipped to perform this projection operation, interfering signals, multipath, spoofing and/or meaconing can be effectively diminished.
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