Accession Number:

AD0701163

Title:

INTERFERENCE PREDICTIONS FOR VHF/UHF AIR NAVIGATION AIDS (COMPANION REPORT TO IER 26-ITSA 26).

Descriptive Note:

Technical rept.,

Corporate Author:

INSTITUTE FOR TELECOMMUNICATION SCIENCES BOULDER CO

Personal Author(s):

• Gierhart, G. D.
• Johnson, M. E.

Report Date:

1969-11-01

Pagination or Media Count:

64.0

Abstract:

Desired-to-undesired signal ratio predictions for the VHF Omnirange VOR and Instrument Landing System ILS air navigation aids are presented. The parameters involved in these systems are given first. Propagation mechanisms applicable to VHFUHF and the calculation of transmission loss and its variability are then discussed, and third, the statistical nature of the desired-to-undesired signal ratio predictions is explained. The results of the study, presented in graphical form, supplement those given by the authors in an earlier ESSA Technical Report on the same subject. In addition to extending the range of variables previously considered, this report considers the glide slope portion of the ILS. Author

Descriptors:

• *RADIO NAVIGATION
• PREDICTIONS
• RELIABILITY
• ATTENUATION
• RADIO EQUIPMENT
• NAVIGATIONAL AIDS
• RADIO TRANSMISSION
• RADIOFREQUENCY INTERFERENCE
• ULTRAHIGH FREQUENCY
• VERY HIGH FREQUENCY

Subject Categories:

• Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE