Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
Types of Global Positioning System Surveys
Methods of Obtaining Topography
Field Application of Global Positioning System
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Updated: Aug 29, 2025

Trajectory Data Analyses for Pedestrian Space-time Activity Study
Published on: February 25, 2013
Shohei Nagata1, Tomoki Nakaya2,3, Tomoya Hanibuchi1
1Graduate School of Environmental Studies, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, 980-0845, Japan.
This study developed a method to estimate daily walking steps using large-scale global positioning system (GPS) data from smartphones. The findings show that urban environments and proximity to train stations encourage more steps, aiding public health research.
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