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- Collision Avoidance Systems : TCAS to ACAS and Safety Assessment Policy
System (TCAS II) to Airborne Collision Avoidance System (ACAS) Xa – ACAS Xa is a NexGen system designed to: • Provide enhanced algorithms for conflict resolution • Provide interoperability with current and future Communication Navigation Surveillance Air Traffic Management systems, including TCAS II 3 ~
- ACAS X update: A small, big change - Engineering Pilot
In 2023, EASA published a Notice of Proposed Amendment (NPA), listing ACAS Xa as an acceptable means of compliance in the regulatory framework [3] The good news: The system is compatible with TCAS II and for the flight crew, there is little difference in terms of the Human Machine Interface (HMI)
- Policy Compression for Aircraft Collision Avoidance Systems
Block compression was adequate for the ACAS Xa tables that limit advisories to vertical maneuvers, but the ACAS Xu tables are much larger This paper explores two approaches for compressing the score table without loss of performance as measured by a set of safety and operational metrics
- Tech Notes
ACAS X detects and tracks aircraft by receiving sensor measurements from onboard surveillance systems and estimates the relative position and velocity of nearby aircraft using advanced tracking algorithms
- The future of collision avoidance – ACAS X - Seventh Sense Research Group
ACAS XA is intended to replace the current Traffic Alert and Collision Avoidance System for large aircraft as well as provide collision avoidance system for General Aviation (GA) and Unmanned Aircraft Systems (UAV)
- ACAS X - Aircraft Avoidance Algorithms - An information . . . - 1Library
ACAS X consists of three systems: surveillance, logic, and display The surveillance system detects and tracks local air traffic and through a use of weight samples, rep- resents an aircraft’s state estimate
- Airborne Collision Avoidance System X - MIT Lincoln Laboratory
ACAS X detects nearby aircraft by receiving sensor measurements from onboard surveillance systems and estimates the relative position and speed of these aircraft by using tracking algorithms The system then weighs the costs of all actions the pilot could take and decides on a single best action
- ACAS X: A Family of Next-Generation Collision Avoidance Systems
ACAS X is a family of collision avoidance systems that use machine learning to optimize traffic alerts, resulting in dramatically reduced nuisance alerting and improved safety
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