Performances of different global positioning system devices for time-location tracking in air pollution epidemiological studies.

ABSTRACT:

Background

People's time-location patterns are important in air pollution exposure assessment because pollution levels may vary considerably by location. A growing number of studies are using global positioning systems (GPS) to track people's time-location patterns. Many portable GPS units that archive location are commercially available at a cost that makes their use feasible for epidemiological studies.

Methods

We evaluated the performance of five portable GPS data loggers and two GPS cell phones by examining positional accuracy in typical locations (indoor, outdoor, in-vehicle) and factors that influence satellite reception (building material, building type), acquisition time (cold and warm start), battery life, and adequacy of memory for data storage. We examined station

SUBMITTER: Wu J 

PROVIDER: S-EPMC3000001 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature