Showing papers on "Collision avoidance system published in 1970"

Collision avoidance system providing a vector signal representative of the distance and bearing between a prime vehicle and target object at a predicted closest point of approach therebetween

Abstract: Radar and associated apparatus track the course of neighboring target vehicles and display closest points of approach between the prime vehicle and the target vehicles to signal potential collisions sufficiently in advance to avoid them, may enter a proposed maneuvering change for the prime vehicle into the apparatus, and the apparatus displays whether the proposed change will present any collision situations.

Frequency diversity time multiplex means for increasing the capacity of a cooperative collision avoidance system

Abstract: A frequency diversity time multiplex means for increasing the capacity of a cooperative collision avoidance system wherein the carrier frequency of transmissions in adjacent time slots is varied stepwise on a predetermined schedule.

Collision avoidance system

Abstract: A collision warning and collision avoidance radar navigation system employs the tau collision warning criterion to derive an improved presentation on a radar plan position or other cathode ray indicator. An intruding target is labelled dangerous if the ratio of intruder closing range to his range rate is seen to be less than a predetermined value by the observation of the relative position of a synthesized bearing marker generated on the display for each target echo.

Collision avoidance system

Abstract: A collision warning and collision avoidance radar navigation system employs a modified tau-proximity collision warning criterion to derive an improved presentation on a storage type of radar plan position cathode ray indicator. An intruding target is labelled dangerous if the ratio of intruder closing range to his range rate is seen to be less than a predetermined value by the observation of the relative positions of synthesized radial lines or trails generated on the display for each target echo.

Performance analysis of an infrared pilot-warning indicator system

Abstract: An optical-infrared concept is described having applications to a simple, low cost pilot-warning indicator. The system required ultimately should be capable of providing the aircraft pilot with an audible warning and a visual presentation which would give both elevation and relative bearing information on other aircraft. This information would be relative to a fixed reference such as the flight path or the longitudinal axis of the aircraft. The concept investigated is not meant to compete with the automatic collision avoidance system, but should be thought of primarily as a simple and relatively cheap means of providing enhanced collision avoidance capability for general aviation aircraft. The system should be capable of multitarget detection at ranges of at least 2 to 5 miles, with an audible alarm, and should provide the pilot with the directional positions of those other aircraft. With these simplified requirements a cooperative pilot-warning indicator system is being developed, based upon the detection of infrared energy emitted by a light source placed on each aircraft. System concepts will be described, based upon the feasibility of the source-detector combinations investigated. These concepts will ultimately have to consider omnidirectional detection of aircraft equipped with xenon lights, and display concepts applicable to this approach need to be further developed.