Collision avoidance system

About: Collision avoidance system is a research topic. Over the lifetime, 1788 publications have been published within this topic receiving 23667 citations.

Multi-target tracker

Abstract: A digital tracker in a cooperative collision avoidance system utilizing time division techniques, which is capable of generating track gates and determining critical values of tau (time to collision) for at least 16 targets during the same time frame, the maximum number of targets being limited essentially by the size of the logic memory elements used and the maximum range desired.

Using Dedicated Short Range Communications for Vehicle Safety Applications - the Next Generation of Collision Avoidance

Abstract: This paper provides the status of the Vehicle Safety Communications-Applications (VSC-A) research project, which was designed to determine if dedicated short range communications (DSRC) paired with accurate vehicle positioning can improve upon autonomous vehicle-based safety systems or enable new communication-based safety applications. This three-year project is a collaborative effort between government and industry to develop the underlying pre-competitive elements needed to enable the deployment of vehicle-to-vehicle (V2V) communication-based crash avoidance applications. The effort includes the development of core software and hardware modules and prototype applications. These use DSRC in conjunction with enhancements to vehicle positioning systems to demonstrate crash avoidance capabilities, which are interoperable between different vehicle manufacturers. To support the development of interoperable systems, the partners have participated in standards and security protocol development activities. The core modules and prototype applications are implemented on a five-vehicle testbed fleet, which will be used to conduct objective tests that are then used to validate minimum performance specifications established as part of this project. These tests will in turn support a safety benefits estimation process to determine the potential for preventing or mitigating crashes and associated fatalities, injuries, and property damage. The full text of this paper may be found at: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv21/09-0330.pdf For the covering abstract see ITRD E145407.

Automatic Aircraft Collision Avoidance Algorithm Design for Fighter Aircraft

Abstract: : The U.S. Department of Defense has identified midair mishaps as a leading cause of loss of life, lost combat capability, and financial cost in fighter/attack aircraft operations. In the past, losses from midair mishaps were mitigated through training and ineffective warning systems. Now, an Automatic Air Collision Avoidance System (Auto ACAS) has been identified as a technology that could significantly reduce midair accidents. The Air Force Research Laboratory (AFRL) and Lockheed Martin are developing Auto ACAS for fighter aircraft operating in an air combat training environment. In this environment, emphasis is placed on providing protection for aircraft performing air combat maneuvers while eliminating nuisance. Auto ACAS is not a pilot advisory system or a de-confliction system; rather, Auto ACAS performs an automatic, aggressive maneuver to avoid collisions with other aircraft and returns control to the pilot as soon as the collision is prevented. The system coordinates maneuver trajectories between aircraft, determines which combination of maneuvers provides the best separation, and initiates maneuvers when a collision is imminent. The maneuvers incorporate pilot preferences and rules of the road where applicable and possible. Most maneuvers last only two to three seconds and occur well within the reaction time of an alert pilot.