Accession Number : ADD010469

Title :   An Apparatus for Demodulating Gyroscope Position Information.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Hooper, Ronald ; Nichols, Kenneth

Report Date : 05 Jul 1983

Pagination or Media Count : 15

Abstract : A synchronous demodulator is configured so as to extract gyroscope position information in a polar coordinate format and then resolve it into position information in a more useful cartesian coordinate format. The technique involves integrations of a gyroscope cage coil signal over integration intervals controlled noisy cage coil signal. Integration of the cage coil signal over intervals controlled by the spin reference signals yields outputs of lambda cos theta and lambda sin theta which are subsequently sampled and held and then summed to produce a precession coil drive signal whose phase is in the proper relationship to make the gyroscope precess in the correct direction,

Descriptors :   *PATENT APPLICATIONS, *GYROSCOPES, DEMODULATORS, POSITION FINDING, CARTESIAN COORDINATES

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE