FCC/USAF POPSI PROJECT
Abstract
From 15 February 1966 to 16 February 1967, the FCC and USAF, with the cooperation of the U. S. Coast Guard, the FAA, the U. S. Weather Bureau, and NASA, conducted an investigation known as the POPSI (Precipitation and Off-Path Scattered Interference) Project. The investigation involved studies of the scattered signal from precipitation and other mechanisms located in the common volumes established by the intersections of the beams from a transmitting antenna operating in a configuration simulating a satellite earth station, and receiving antennas configured in a manner typical of terrestrial microwave radio relay stations. The project was designed to obtain data at a frequency of 5.75 GHz for a statistical treatment to estimate the magnitude of the problem of both on and off-path scattered interference between microwave radio relay stations and satellite system earth stations sharing the same frequency bands. More than 3000 hours of field strength measurements were recorded. Some attempt has been made to correlate the enhanced fields with meteorological phenomena, although the mechanisms have not been examined in great detail for this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 15, 1968
- Accession Number
- AD0667422
Entities
People
- Daniel B. Hutton
- Gary S. Kalagian
- Roger B. Carey