Two-channel fast-sequencing high-dynamics GPS navigation receiver
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United States of America Patent
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Feb 20, 2001
Grant Date -
N/A
app pub date -
May 19, 1999
filing date -
Dec 15, 1997
priority date (Note) -
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Importance
Abstract
A GPS navigation receiver channel tracks satellites' Doppler frequencies sequentially during the twenty milliseconds that the signal is coherent in each bit time of the navigation data modulation. It measures frequency by differencing the angles of signal-vector sums weighted by parabolic humps, exploiting the commutativity of linear processing operations to raise the signal-to-noise ratio before the nonlinear operation phase of detection.
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