An airborne electromagnetic-environment survey of some U.S. metropolitan areas measured terrestrial emissions within the broad-frequency spectrum from 0.4 to 10 GHz. A Cessna 402 commercial aircraft was fitted with both nadir-viewing and horizon-viewing antennas and instrumentation, including a spectrum analyzer, a 35-mm continuous-film camera, and a magnetic-tape recorder. Most of the flights were made at a nominal altitude of 10,000 ft, and Washington, Baltimore, Philadelphia, New York, and Chicago were surveyed. The 450- to 470-MHz land-mobile UHF band is especially crowded, and the 400- to 406-MHz space bands are less active. Test measurements obtained up to 10 GHz are discussed. Sample spectrum-analyzer photographs were selected from a total of 5750 frames representing 38 hours of data.
0.4- to 10-GHz airborne electromagnetic-environment survey of United States urban areas
International Symposium on Electromagnetic Compatibility ; 1976 ; Washington, DC
1976-01-01
Sonstige
Keine Angabe
Englisch
Airborne electromagnetic survey apparatus and airborne electromagnetic survey method
Europäisches Patentamt | 2024
|AIRBORNE ELECTROMAGNETIC SURVEY APPARATUS AND AIRBORNE ELECTROMAGNETIC SURVEY METHOD
Europäisches Patentamt | 2020
|AIRBORNE ELECTROMAGNETIC SURVEY DEVICE AND METHOD FOR AIRBORNE ELECTROMAGNETIC SURVEY
Europäisches Patentamt | 2020
|