Showing papers on "Inertial measurement unit published in 1985"
TL;DR: A scheme is presented of continuous gyrocompassing of an inertial measurement unit (IMU), aided by an odometer, on a land vehicle, and feasibility of the concept is demonstrated.
Abstract: A scheme is presented of continuous gyrocompassing of an in ertial measurement unit (IMU), aided by an odometer, on a mov ing land vehicle. Kalman filtering is employed to realize the aiding function. Feasibility of the concept is demonstrated by the result.
5 citations
DOI•
01 Oct 1985
TL;DR: The performance requirements of a gyro for one nautical mile per hour aircraft IN system are derived and the difference between `gimballed?
Abstract: A simple explanation of inertial navigation is presented. The difference between `gimballed? and `strapdown? systems is explained. The performance requirements of a gyro for one nautical mile per hour aircraft IN system are derived.
4 citations
TL;DR: A new integration scheme is proposed which performs more effective information exchange so that it is more tolerant to rf interferences and unmodeled INS errors (such as errors caused by IMU failures) than the conventional scheme.
3 citations
01 Aug 1985
TL;DR: The 3He nuclear gyroscope as discussed by the authors is a single species cryogenic device which can be instrumented as a three degree of freedom (3DOF) gyrometer.
Abstract: : The 3He nuclear gyroscope is a single species cryogenic device which can be instrumented as a three degree of freedom gyroscope. Sensitivities to dynamic terms can be molded, measured, and compensated by generation of cross axis magnetic fields. The magnetic field generation scheme is the equivalent of putting the gyro on a stabilized platform but requires no moving parts. Such a gyroscope would be most useful integrated with other cryogenic instruments in a high accuracy all cryogenic inertial measurement unit. Keywords include: cyrogenic inertial instruments; inertial navigation; nuclear gyroscope; and guidance and control.
1 citations
TL;DR: In this paper, the authors describe on-line and off-line algorithms for processing navigation-quality inertial data to identify nonlinear maneuvering hydrodynamic models of ships.
1 citations