caa a22 4500 47712304X CHVBK 20180405111642.0 cr unu---uuuuu 170330e19970101xx s 000 0 eng 10.1007/BF02677909 doi (NATIONALLICENCE)springer-10.1007/BF02677909 Millimeter-wave atmospheric turbulence measurements: Instrumentation, selected results, and system effects [Elektronische Daten] [R. McMillan, R. Bohlander, W. Baldygo] Increasing interest in and greater usage of the millimeter-wave frequency bands has resulted in a need for better characterization of atmospheric effects at these frequencies. While attenuation is recognized as the most significant effect, recent measurements of fluctuations in intensity and phase caused by atmospheric turbulence have shown that these phenomena will also degrade system performance at both millimeter-wave and microwave frequencies. This paper describes the millimeter-wave and meteorological instrumentation used to make these measurements and gives selected results. It is determined that phase fluctuations as great as 1.5 radians and intensity fluctuations as large as 2.8 dB are observed over a 1370 m path in hot, humid weather. The effects of these fluctuations on the performance of practical, existing microwave phased array and monopulse systems are assessed. It is determined that phase fluctuations in particular will degrade the performance of microwave adaptive nulling arrays and monopulse trackers. Plenum Publishing Corporation, 1997 McMillan R. U.S. Air Force Rome Laboratory, 26 Electronic Parkway, 13441-4514, Rome, New York aut Bohlander R. Georgia Institute of Technology, Georgia Tech Research Institute, 30332, Atlanta, Georgia aut Baldygo W. U.S. Air Force Rome Laboratory, 26 Electronic Parkway, 13441-4514, Rome, New York aut International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/1(1997-01-01), 233-258 0195-9271 18:1<233 1997 18 10762 https://doi.org/10.1007/BF02677909 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02677909 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McMillan R. U.S. Air Force Rome Laboratory, 26 Electronic Parkway, 13441-4514, Rome, New York aut NATIONALLICENCE 700 1- Bohlander R. Georgia Institute of Technology, Georgia Tech Research Institute, 30332, Atlanta, Georgia aut NATIONALLICENCE 700 1- Baldygo W. U.S. Air Force Rome Laboratory, 26 Electronic Parkway, 13441-4514, Rome, New York aut NATIONALLICENCE 773 0- International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/1(1997-01-01), 233-258 0195-9271 18:1<233 1997 18 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer