UPLINK COVERAGE MEASUREMENTS IN THE LOS ANGELES AREA FOR PASSIVE BCAS

Uplink (1030 MHz) measurement results are presented, based on data recorded by the Airborne Measurement Facility of the M.I.T. Lincoln Laboratory during normal landings and take-offs at the LAX, Van Nuys, and San Diego airports. The data presented are relevant to current investigations of passive beacon-based collision avoidance systems and include: (1) the interrogator environment as received; (2) its division between FAA and other interrogators; (3) its dependence on aircraft height during landings and take-offs; and (4) the availability of P2 pulse of sufficient strength for PRF (pulse repetition frequency) tracking. The number of interrogators was found to increase with the aircraft height at the rate of 2.5 to 3 interrogators per 1000 ft. P2 pulse tracking appears to be feasible down to 2000 ft. at LAX, and lower at San Diego. (Author)

• Corporate Authors:

  Massachusetts Institute of Technology

  Linclon Laboratory, 244 Wood Street
  Lexington, MA  United States  02420-9180
• Authors:
  • Nagy, F J
• Publication Date: 1977-11-7

Media Info

• Pagination: 31 p.

Subject/Index Terms

• TRT Terms: Airport terminals; Airports; Altitude; Beacons; Crash avoidance systems; Flight paths; Interrogation; Interrogators; Landing; Passive restraint systems; Population; Radio frequency; Takeoff; Tracking systems
• Uncontrolled Terms: Frequency bands; Tracking
• Geographic Terms: Los Angeles (California)
• Old TRIS Terms: Angle of arrival; Mission profiles; Passive systems
• Subject Areas: Aviation; Safety and Human Factors; Security and Emergencies; Terminals and Facilities;

Filing Info

• Accession Number: 00169732
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: ATC-81, FAA/RD-77/134
• Contract Numbers: F19628-78-C-0002,, DOT-FA77WAI-727
• Files: NTIS
• Created Date: Mar 14 2002 12:00AM