@article{ref1,
title="Addressing Issues With GPS Data Accuracy and Position Update Rate for Field Traffic Studies",
journal="ITE journal",
year="2003",
author="Li, Shuoqi and Zhu, Kun",
volume="73",
number="2",
pages="32-37",
abstract="The accuracy and position update rate provided by three different GPS receivers for traffic studies were analyzed. Real travel time and speed data were measured using the receivers. Interpolation techniques were presented to construct missing data and improve data continuity. The resultant data were analyzed in detail.   <p>Language: en</p>",
language="en",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}