Digital signal processing method and system thereof for precision orientation measurements
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United States of America Patent
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Apr 20, 2004
Grant Date -
May 16, 2002
app pub date -
Sep 4, 2001
filing date -
Sep 2, 2000
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Abstract
The present invention provides a digital signal processing method and system thereof for producing precision platform orientation measurements and local Earth's magnetic measurements by measuring threes axes gravity acceleration digital signals by an acceleration producer, detecting Earth's magnetic field vector measurement by an Earth's magnetic field detector to achieve digital three-axes Earth's magnetic field vector signals, and producing pitch, roll, and heading angles using said three-axes gravity acceleration digital signals and said digital three-axes Earth magnetic field vector signals by a Digital Signal Processor (DSP) chipset.
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