A MID-AIR COLLISION THREAT ALGORITHM THAT USES BEARING DATA

This paper derives an algorithm for use by an airborne mid-air collision avoidance system to determine when an alarm should be given in case a mid-air collision is imminent. The algorithm is based on an extension of the standard modified tau alarm criterion used in most collision avoidance system threat logics. The standard criterion uses only altitude and range data and, as a result, will generate high alarm rates in heavy air traffic. The criterion presented here makes use of bearing data as well as altitude and range data and should, therefore, provide lower alarm rates. (Author)

• Corporate Authors:

  Institute for Defense Analyses

  Science and Technology Division
  Arlington, VA  United States  22202
• Authors:
  • KAY, I W
• Publication Date: 1976-11

Media Info

• Pagination: 55 p.

Subject/Index Terms

• TRT Terms: Air traffic; Aircraft pilotage; Algorithms; Altitude; Chemical reduction; Coefficients; Crash avoidance systems; False alarms; Flight paths; Logic; Midair crashes; Rates; Threats; Vehicle range; Warning systems
• Old TRIS Terms: Bearing direction; False alarms; Flight maneuvers; Mathematical logic; Range distance; Reduction; Tau alarm criterion; Threat evaluation
• Subject Areas: Aviation; Safety and Human Factors; Security and Emergencies;

Filing Info

• Accession Number: 00150734
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: P-1231 Final Rpt., IDA/HQ-76-18690
• Files: TRIS
• Created Date: Mar 30 1977 12:00AM