title: In situ occupational and general public exposure to VHF/UHF transmission for air traffic communication.
abstract: Occupational and general public exposure due to very high frequency (VHF)/ultra high frequency (UHF) transmission centres for verbal communication for air traffic control is investigated in situ for the first time. These systems are used for communication with aircraft, resulting in different human exposure from that of classical broadcasting. Measurement methods are proposed for the exposure assessment, and a measurement campaign is executed in three transmission centres. By investigating the temporal behaviour of the VHF signals for 6 d, a realistic worst-case duty cycle of 29 % is determined. Periods of high exposures corresponding with high aircraft traffic are from 7 a.m. to 1 p.m. and in the evening. All measured electric-field values satisfy the International Commission on Non-ionizing Radiation Protection guidelines. Fields vary from 0.2 to 21.1 V m(-1) for occupational exposure and from 0.007 to 8.0 V m(-1) for general public exposure. The average fields equal 5.2 V m(-1) for workers, and 0.7 V m(-1) for general public.
authors.affiliation: Department of Information Technology, Ghent University/IBBT, Gaston Crommenlaan 8, B-9050 Ghent, Belgium. wout.joseph@intec.ugent.be
authors.forename: Wout
authors.initials: W
authors.lastname: Joseph
authors.forename: Francis
authors.initials: F
authors.lastname: Goeminne
authors.forename: Leen
authors.initials: L
authors.lastname: Verloock
authors.forename: Günter
authors.initials: G
authors.lastname: Vermeeren
authors.forename: Luc
authors.initials: L
authors.lastname: Martens
mesh_terms: D001359:Aviation / Q000295:instrumentation*; D060733:Electromagnetic Radiation; D006801:Humans; D016273:Occupational Exposure / Q000032:analysis* / Q000517:prevention & control; D011634:Public Health; D011834:Radiation Monitoring; D011835:Radiation Protection; D011846:Radio Waves