Patent
Integrated collision avoidance, dme, telemetry, and synchronization system
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TLDR
In this paper, a time-sharing cyclic time slot system in which DME range measuring functions, collision avoidance functions, clock synchronization functions and data telemetry functions are all combined into an integrated repeating time sharing cycle in a noninterfering manner to achieve either general navigation and traffic control, or else stationkeeping, by the orderly exchange of pulse signals between participating ground stations and/or aircraft.Abstract:
A time-sharing cyclic time slot system in which DME range measuring functions, collision avoidance functions, clock synchronization functions and/or data telemetry functions are all combined into an integrated repeating time sharing cycle in a non-interfering manner to achieve either general navigation and traffic control, or else stationkeeping, by the orderly exchange of pulse signals between participating ground stations and/or aircraft, and in which the cost of the system is minimized by using already existing ground and/or airborne VORTAC/TACAN/VOR/DME equipment and tuning the airborne transmitters and receivers in an agile manner to the various frequencies assigned for the performance of the above functions.read more
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Patent
Collison avoidance communication system and method
TL;DR: In this paper, a collision avoidance communication system and method, equipped aircraft (12) and ground control stations (18) which represent nodes of an RF communication network (22), is presented.
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TL;DR: In this article, an aircraft collision avoidance system providing warning and avoidance manuevers for all fixed and moving obstructions that threaten the safe navigation of the host aircraft is presented, which is effective against threatening aircraft, runway maintenance vehicles and prominent geographic obstructions such as radio towers and mountain peaks.
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Discrete address beacon, navigation and landing system (DABNLS)
TL;DR: In this paper, an aircraft surveillance, navigation, landing, guidance and collision avoidance system is provided which takes the form of a two-way data communication link between each of a plurality of controlled aircraft and a ground station.
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TL;DR: In this article, a coherent signal generated at a precise frequency determined by an atomic clock is transmitted by a moveable object, and a receiver station compares the frequency of the coherent signal received from the moving object with a second coherent signals generated at the same precise frequency in the receiver to determine the radial component of the velocity of the moveable objects relative to the receiver as a function of the doppler shift of the transmitted signal.
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System for aiding the movement of moving units in group formation
TL;DR: In this article, a system for aiding the movement of moving units (aircraft such as helicopters) when flying in formation is proposed, where each unit transmits information to every other unit so that bidirectional communication links are established between all units in the formation.
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Patent
Vor/dme, tacan and vortac having increased capability
TL;DR: In this paper, a modified VOR/DME, TACAN or VORTAC system has ground stations synchronized to a master time and transmitting marker signals timed to a precise rate by the clock, and having a DME transponder; in combination with aircraft having standard DME cooperating with the ground DME to measure range by the round trip pulse technique, and the aircraft each having a local time clock and means to synchronize the time clock to the ground station clocks upon receipt of a marker signal by using the twoway DME measured range to compensate for marker