06725173 is referenced by 92 patents.

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.

Title
Digital signal processing method and system thereof for precision orientation measurements
Application Number
9/946908
Publication Number
6725173 (B2)
Application Date
September 4, 2001
Publication Date
April 20, 2004
Inventor
Ching Fang Lin
Simi Valley
CA, US
Dong An
Simi Valley
CA, US
Agent
David and Raymond Patent Group
US
Agent
Raymond Y Chan
US
Assignee
American GNC Corporation
CA, US
IPC
G01S 5/02
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