Accession Number:

ADA183969

Title:

Estimates of Satellite EHF Communication Outages Due to Attenuation by Rain.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s):

• Tattelman,Paul
• Knight,Richard W.
• Scharr,Kathryn G.

Report Date:

1987-03-05

Pagination or Media Count:

39.0

Abstract:

This report provides estimates of outage frequencies, durations, and probabilities at eight United States locations for a satellite EHF communication system employing a frequency of 30 GHz and a fade margin of 15 dB. Ten years of 1-min rain rates at each location were used in conjunction with a attenuation model to make the estimates. One-min rates are recognized as most practical for these calculations, but are ordinarily unreadable from original recordings is described. Analyses of the 1-min rain rates and outage estimates for elevation angles of 10 deg, 30 deg, 50 deg, and 70 deg are presented. Keywords include Rainfall, Attenuation, EHF communications, and Satellite communications.

Descriptors:

• *EXTREMELY HIGH FREQUENCY
• *RAINFALL
• *SATELLITE COMMUNICATIONS
• *ATMOSPHERIC ATTENUATION
• ATTENUATION
• MODELS
• ELEVATION
• ARTIFICIAL SATELLITES
• POSITION(LOCATION)
• UNITED STATES
• RADIO WAVES

Subject Categories:

• Radiofrequency Wave Propagation
• Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE