Accession Number : ADA118909

Title :   Instrument Landing System Localizer Receiver Performance in the Presence of Co-Channel Interference.

Descriptive Note : Final rept.,

Corporate Author : NATIONAL TELECOMMUNICATIONS/INFORMATION ADMINISTRATION BOULDER CO INST FOR TELECOMMUNICATION SCIENCES

Personal Author(s) : Haakinson,Eldon J

PDF Url : ADA118909

Report Date : Jul 1982

Pagination or Media Count : 51

Abstract : 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.

Descriptors :   *Instrument landings, *Radiofrequency interference, *Radio receivers, Navigational aids, Signal to noise ratio, Frequency modulation, Landing aids, Dual channel, Automatic gain control, Continuous waves, Frequency shift keyers, Sensitivity, Distortion, Parameters, Sound, Phase shift keyers, Receivers

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE