Heading reference and land navigation system

Details Heading reference and land navigation system Heading reference and land navigation system

G - Physics

01

C

343/72

G01C 21/16 (2006.01)

Patent

CA 1204487

ABSTRACT OF THE DISCLOSURE HEADING REFERENCE AND LAND NAVIGATION SYSTEM A heading reference system for sensing vehicle heading relative to fixed inertial space is mountable in a vehicle such as a land-based vehicle and includes a two-degree-of-freedom (TDF) dynamically tuned gyroscope responsive to vehicle rotation about pitch and yaw axes for generating rate signals indicative of the rotation. A caging loop generates force signals for torquing the gyroscope to a null position. A pair of accelerometers are responsive to misalignment of the vehicle relative to a horizontal plane formed by the pitch and roll axes. Processor circuitry is responsive to the force signals, the misalignment of the vehicle relative to pitch and roll axes, and distance signals generated by an odometer unit to apply heading signals to an indicator unit for visually indicating to a vehicle operator the directional heading.

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