JEROLD P GILMORE
Broker in Newton, MA
License number
Massachusetts 87702
Issued Date
Nov 1, 1974
Expiration Date
Apr 16, 1976
Type
Broker
Address
Address
Newton, MA 02458
Professional information
Inertial Navigation System With Automatic Redundancy And Dynamic Compensation Of Gyroscope Drift Error
US Patent:
5194872, Mar 16, 1993
Filed:
Nov 14, 1990
Appl. No.:
7/612788
Inventors:
Howard Musoff - Brookline MA
Jerold P. Gilmore - Newtonville MA
Jerold P. Gilmore - Newtonville MA
Assignee:
Charles Stark Draper Laboratory, Inc. - Cambridge MA
International Classification:
H04B 7185
US Classification:
342358
Abstract:
An inertial navigation system with automatic redundancy and dynamically calculated gyroscopic drift compensation utilizes three, two-degree of freedom gyroscopes arranged whereby any two of the gyroscopes form an orthogonal triad of measurement sensitive axes. The input axes of the three gyroscopes form three pairs of parallel input axes, each pair of parallel input axes corresponding to one axis of the orthogonal triad of axes. The three gyroscopes are operated in a plurality of preselected combinations of both clockwise and counter clockwise directions, thus changing the direction of the angular momentum vector by 180. degree. Parity equations are formed from each pair of gyroscope outputs whose measurement sensitive axes are parallel. The parity equations include combinations of gyroscope pairs that have been operated in both the clockwise and counterclockwise directions. Gyroscope drift estimates are then computed using the parity equations to provide individual gyroscope lumped drift corrections (self-calibration) to the inertial guidance and navigation system.