Airborne surveys of USA urban areas at 121.5/243 MHzIn situ, aircraft flight measurements were made in 1976 and 1977 by NASA of the radio-frequency environment over USA urban areas within the emergency distress search and rescue frequency bands at 121.5 and 243.0 MHz. This paper analyzes test results reported previously for USA East Coast and Midwest flight surveys; presented also are test results obtained in May 1977 for the USA West Coast during the NASA, ASSESS-II, Space Shuttle/Spacelab simulation aircraft flights. The USA West Coast flight include data at 121.5/243 MHz during an extensive series of aircraft passes for the Los Angeles urban area. The USA East Coast/Midwest measurements show correlation with population count.
Document ID
19810029873
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Taylor, R. E. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Hill, J. S. (EMXX Corp. Springfield, Va., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1979
Subject Category
Communications And Radar
Meeting Information
Meeting: International Symposium on Electromagnetic Compatibility