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Use of Portable Global Positioning System (GPS) Devices in Exposure Analysis for Time-location Measurement

Lee, Ki-Young    (Graduate School of Public Health and Institute of Health and Environment, Seoul National University   ); Kim, Joung-Yoon    (Graduate School of Public Health and Institute of Health and Environment, Seoul National University   ); Putti, Kiran    (College of Public Health, University of Kentucky   ); Bennett, Deborah H.    (Department of Public Health Sciences, University of California   ); Cassady, Diana    (Department of Public Health Sciences, University of California   ); Hertz-Picciotto, Irva    (Department of Public Health Sciences, University of California  );
  • 초록

    Exposure analysis is a critical component of determining the health impact of pollutants. Global positioning systems (GPS) could be useful in developing time-location information for use in exposure analysis. This study compares four low cost GPS receivers with data logging capability (Garmin 60, Garmin Forerunner 201, GeoStats GeoLogger and Skytrx minitracker MT4100) in terms of accuracy, precision, and ease of use. The accuracy of the devices was determined at two known National Geodetic Survey points. The coordinates logged by the devices were compared when the devices were carried while walking and driving. The Garmin 60 showed better accuracy and precision than the GeoLogger when they were placed at the geodetic points. The Forerunner and Skytrx did not record when they were kept stationary. When the subject wore the devices while walking, the location of the devices differed by about 8 m on average between any two device combinations involving the four devices. The distance between the coordinates logged by the devices decreased when the devices were carried with their antennas facing the sky. All the devices showed similar routes when they were used in a car. All the devices except the Forerunner had satisfactory signal reception when they were worn and when they were carried in the car. The GeoLogger is less comfortable for the subject because of specific wearing requirements. This evaluation found that the Garmin 60 and the Skytrx may be useful in personal exposure analysis studies to record time-location data.


  • 주제어

    personal exposure .   time-activity pattern .   GPS .   accuracy .   performance.  

  • 참고문헌 (8)

    1. Elgethun, K., Yost, M., Fitzpatrick, C., Nyerges, T., Fenske, R. : Comparison of global positioning system (GPS) tracking and parent-report diaries to characterize children's time-location patterns. Journal of Exposure Science and Environmental Epidemiology, 17, 196-206, 2007 
    2. Nuckols, J. R., Ward, M. H., Jarup, L. : Using geographic information systems for exposure assessment in environmental epidemiology studies. Environmental Health Perspectives, 112, 1007-1015, 2004 
    3. US EPA, GIS Technical Memorandum 3: Global positioning systems technology and its application in environmental programs. Washington, DC., 1992 
    4. Robinson, J., Godbey, G. : Time for Life, Penn State Press, 1997 
    5. Freeman, N. C. G., Tejada, S. S. D. : Methods for collecting time/activity pattern information related to exposure to combustion products. Chemosphere, 49, 979-992, 2002 
    6. Kaplan, E. : Understanding GPS: Principles & Applications, Artech House, 1996 
    7. Elgethun, K., Fenske, R., Yost, M., Palcisko, G. : Time-location analysis for exposure assessment studies of children using a novel global positioning system instrument. Environmental Health Perspectives, 111, 115-122, 2003 
    8. Phillips, M., Hall, T., Esmen, N., Lynch, R., Johnson, D. : Use of global positioning system technology to track subject's location during environmental exposure sampling. Journal of Exposure Analysis and Environmental Epidemiology, 11, 207-215, 2001 
  • 이 논문을 인용한 문헌 (1)

    1. Lee, Boram ; Ban, Hyunkyung ; Jang, Yelim ; Lee, Kiyoung 2016. "Measurement of Time/Location for Personal Exposure Assessment of Air Pollutants" 韓國環境保健學會誌 = Journal of environmental health sciences, 42(5): 314~323     

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