Vehicle collision avoidance system

Abstract

Abstract A METHOD OF AN APPARATUS FOR AVOIDING COLLISIONS BETWEEN VEHICLES, PARTICULARLY SUITED FOR THE CONTROL AIRCRAFT, UTILIZING TIME SHARING TECHNIQUES AND BEING SYNCHRONIZED BY SATELLITE EMITTED SIGNALS. EACH SATELLITE SIGNAL INITIATES A TIME CYCLE WHICH IN TURN IS DIVIDED INTO A NUMBER OF TIME SLOTS. EACH AIRCRAFT IS ASSIGNED A TIME SLOT DURING WHICH IT MAY TRANSMIT INTELLIGENCE, INCLUDING A REFERENCE SIGNAL. INTELIGENCE IS COLLECTED DURING ALL OTHER TIMES. EACH AIRCRAFT, HAVING A COMMON TIME SCALE WITH ALL OTHER AIRCRAFT, MEASURES THE TRANSMISSION TIME OF EACH RECEIVED REFERENCE SIGNAL. THE TRANSMISSION TIME IS DIRECTBY PROPORTIONAL TO THE DISTANCE BEWEEN THE AIRCRAFT PROVIDING KNOWLEDGE UPON WHICH EVASIVE MANEUVER MAY BE BASED. SINCE THE VARIOUS AIRCRAFT WILL BE AT DIFFERING DIS- TANCES FROM THE SATELLITE, COME ERROR WILL BE PRESENT IN THE MEASURED DISTANCE BETWEEN AIRCRAFT. CORRECTION IS ACCOMPLISHED BY TRANSMITTING THE MEASURED RANGE TO THE OTHER AIRCRAFT. THUS, EACH HAS AVAILABLE THE DISTANCE BETWEEN AIRCRAFT AS MEASURED AT EACH AIRCRAFT. THE AVERAGE OF THE TWO MEASURED RANGES IS COMPUTED AND YIELDS THE ACTUAL RANGE. A TIME GATE IS ALOS PROVIDED FOR EXCLUDING THE REFERENCE SIGNAL FROM AIRCRAFT WHICH CLEARLY PROVIDE NO DANGER TO THE AIRCRAFT IN QUESTION.

Inventors

• 👤 Morris Sorkin

Bibliographic Details