GPS-based measurement of roll rate and roll angle of spinning platforms
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United States of America Patent
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Aug 9, 2011
Grant Date -
May 13, 2010
app pub date -
Jan 9, 2008
filing date -
Jan 9, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for determining the roll rate and roll angle of a spinning platform, using the measured phase differences between the GPS satellite signals received on two or more antennas. The measured phase differences and the navigation solution from a GPS receiver are processed in a Kalman filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines, in which the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.
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