A REVIEW AND ANALYSIS OF THE HONEYWELL COLLISION AVOIDANCE SYSTEM-PHASE II

The report explores critical problems in the Honeywell CAS in a high density environment such as that projected by the FAA in 1971 for the Los Angeles Basin in 1982 (800 aircraft). In the analysis, the Air Transport Association (ATA) collision avoidance logic was used to evaluate the performance of the Honeywell CAS and the suitability of the ATA logic was not questioned. Where possible, this report attempts to build on IDA's previous analyses; however, because of extensive and significant design changes, particularly in the threat evaluation logic, the performance of the Honeywell CAS with regard to detection probability and false alarm probability in a dense environment had to be revised considerably. Honeywell has proposed two levels of equipment for use in collision avoidance; the AVOIDS-I and AVOIDS-II. The AVOIDS-I is intended for use by high-performance aircraft and can handle encounters between aircraft with closing speeds up to 2000 ft/sec. The threat evaluation logic of the AVOIDS-I is patterned after the ATA logic, but some minor differences exist. The AVOIDS-II equipment is intended for use by low-performance aircraft and is not patterned after the ATA logic.

• Corporate Authors:

  Institute for Defense Analyses

  400 Army Navy Drive
  Arlington, VA  United States  22202

  Federal Aviation Administration

  Systems R&D Service, 800 Independence Avenue, SW
  Washington, DC  United States 
• Authors:
  • Dausin, L R
• Publication Date: 1975-10

Media Info

• Pagination: 146 p.

Subject/Index Terms

• TRT Terms: Air traffic control; Asynchronous control; Aviation safety; Avionics; Crash avoidance systems; Logic; Probability; Rangefinders; Systems engineering; Threats; Transponders
• Identifier Terms: Avoids-1 (Collision avoidance system); Avoids-2 (Collision avoidance system)
• Geographic Terms: California
• Old TRIS Terms: Asynchronous systems; Logic; Range finding; Threat evaluation
• Subject Areas: Aviation; Data and Information Technology; Operations and Traffic Management; Security and Emergencies;

Filing Info

• Accession Number: 00094475
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA-RD-75-151 Final Rpt., S-460
• Contract Numbers: DOT-FA74WA-3498
• Files: NTIS, TRIS, USDOT
• Created Date: Apr 21 1976 12:00AM