{"title":"Airborne Surveys of USA Urban Areas at 121.5/243 MHz","authors":"R. Taylor, James S. Hill","doi":"10.1109/ISEMC.1979.7568822","DOIUrl":null,"url":null,"abstract":"In situ, aircraft flight measurements were made in 1976 and 1977 by the National Aeronautics and Space Administration (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 previously1-3 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 flights include data at 121.5/243 MHz during an extensive series of aircraft-flyover passes for the Los Angeles, CA urban area. The USA East Coast/Midwest measurements show correlation with population count.","PeriodicalId":283257,"journal":{"name":"1979 IEEE International Symposium on Electromagnetic Compatibility","volume":"47 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1979 IEEE International Symposium on Electromagnetic Compatibility","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISEMC.1979.7568822","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
In situ, aircraft flight measurements were made in 1976 and 1977 by the National Aeronautics and Space Administration (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 previously1-3 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 flights include data at 121.5/243 MHz during an extensive series of aircraft-flyover passes for the Los Angeles, CA urban area. The USA East Coast/Midwest measurements show correlation with population count.
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