Experimental vehicle location system using decca navigator and dead-reckoning sensors

An integrated vehicle location system is described which employs an automatic receiver of simple design for the Decca Navigator system, supplemented by an odometer and gymballed flux-gate compass. Data recorded on board the vehicle have been processed offline using a Kalman filter technique. Vehicle tracks are presented which show less than 70 m standard deviation of error over long routes in urban and rural areas.