INSTRUMENT LANDING SYSTEM LOCALIZER RECEIVER PERFORMANCE IN THE PRESENCE OF CO-CHANNEL INTERFERENCE

Co-channel signals can cause harmful interference to navigational aid systems such as the Instrument Landing System. This report describes the performance of four localizer receivers in the presence of interference from co-channel CW (Continuous Wave), PSK (Phase Shift Keying), FSK (Frequency Shift Keying), and FM (Frequency Modulation) signals. The receiver parameters monitored during the measurements were course deviation voltage, warning flag voltage, AGC (Automatic Gain Control) voltage, and audio distortion. Measurement results are reported as the minimum signal-to-interference ratio required to keep each monitored parameter from exceeding specified bounds. Course deviation voltage is the most sensitive parameter to the co-channel interference.

• Corporate Authors:

  National Telecommunications and Information Administration

  Institute for Telecommunication Sciences
  Boulder, CO  United States 

  Federal Aviation Administration

  William J. Hughes Technical Center, Airport Technology Research and Development Branch
  Atlantic City International Airport
  Atlantic City, NJ  United States  08405
• Authors:
  • Haakinson, E J
• Publication Date: 1982-7

Media Info

• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Distortion (Structures); Frequency modulation; Instrument landing systems; Landing aids; Navigational aids; Phase shift (Electricity); Phase transitions; Radio equipment; Radio frequency interference; Radio receivers; Radio waves; Sensitivity; Signal to noise ratio; Sound
• Uncontrolled Terms: Parameters
• Old TRIS Terms: Automatic gain control; Continuous waves; Distortion; Dual channel; Frequency shift keyers; Phase shift keyers

Filing Info

• Accession Number: 00365603
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT/FAA/RD-82/43
• Contract Numbers: DT-FA01-81-Y-10534
• Files: NTIS, USDOT
• Created Date: Nov 30 2003 12:00AM