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3 Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics
1 TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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Development of automatic collision avoidance system and quantitative evaluation of the manoeuvring results

Nakamura S., Okada N.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2019

Vol. 13, no. 1

133--141

The automatic collision avoidance system introduced in this paper is a system constantly calculating optimal manoeuvring method from the risk and economic preference in the ship manoeuvring space where the course change and the deceleration are performed. The authors also propose a system that quantitatively evaluates the collision avoidance manoeuvring results. Based on the evaluation results of this system, the authors are setting parameters so that ship manoeuvring that does not give anxiety to target ships to be avoided is also realized in automatic collision avoidance manoeuvring. In addition, comparison between the manoeuvring results of the automatic collision avoidance system and the veteran captain's manoeuvring results was quantitatively compared by the proposed evaluation system. Verification experiments were successfully conducted to verify the effectiveness of the proposed automatic collision avoidance system on the actual ship navigating in congested waters.

System requirements for automatic air collision avoidance

Quaglieri R., Pineiro L., Saunders D., Barfield A.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2000

nr 10

158-166

Routine flights of multiple unmanned vehicles in the same airspace with manned aircraft presents a set of very challenging problems. If military versions of unmanned aerial vehicles are to be used in massed attacks, cooperate with manned fighters on combat missions, and fly through civil airspace, then autonomous UAV control becomes a major goal for the US Air Force. In a densely populated airspace, autonomous collision avoidance will be necessary so vehicles will, in some manner, "see and avoid" other aircraft. System requirements for Autonomous Air Collision Avoidance will be desribed in this paper. It will form the last line of defense, automatically maneuvering an aircraft in the last seconds to avoid air-to-air collisions. The system will be reliable, verifiable, and nuisance free. It will allow safe manned-unmanned vehicle interoperability and acting in accordance with embedded rules of the road based on pilot collision avoidance techniques.

Nuisance criteria development for an automatic air collision avoidance system

Nguyen B., Saunders D.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2000

nr 10

145-152

Automated aircraft recovery systems require that some criterion/threshold be established to prevent the system from activating prior to the time the pilot would maneuver the aircraft. This is done to prevent a premature system activation that would be considered a "nuisance" to the pilot. During the recently Auto Ground Collision Avoidance System (GCAS), a nuisance criterion was established. The technique utilized several pilots flying their aircraft towards the ground and recovering at their comfort level. This paper discusses some methods that will be utilized to establish a nuisance criterion for an Automatic Air Collision Avoidance System (Auto ACAS).

Development of an automatic air collision avoidance system (ACAS)

Swinhard D., Eberhardt R., Brannstrom B.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2000

nr 10

199-202

The use of Unmanned Aerial Vehicles (UAVs) has become an important concept for military operations. As more of these systems are utilized, the methods to control them become more difficult. This paper discusses an Automatic Air Collision Avoidance System (ACAS). This system prevents air-to-air between vehicles by tracking trajectories and intent of neighboring vehicles. Automation is achieved by providing data to the digital flight control computer from the other aerial vehicle and commanding an escape maneuver. The system is for both manned aircraft and for UAVs. In the case of manned aircraft, the system only activates at the last possible moment to avoid interfering with normal pilot operation. This paper also discusses results of a concept study conducted by U.S. and Swedish contractors. The concept study is precursor a to a joint integration and flight test program for both manned aircraft and UAVs.