PRIMARY LAND ARCTIC NAVIGATION SYSTEM

摘要

ABSTRACT OF THE DISCLOSUREA land navigation system for use in a vehicle, comprises, incombination, a device providing a signal representative of the headingof the vehicle, a device providing a signal representative of the speedof the vehicle, and a computing apparatus responsive to the vehicleheading representative signal and the vehicle speed representativesignal for providing a continuous indication of the position, altitudeand heading of the vehicle.