TY - JOUR A1 - Song, X. A1 - Long, Y. A1 - Zhang, L. T1 - Positioning Error in Mobile Phone Tracking Data with Consideration of Geographic Environment Factors JO - Abstr. Int. Cartogr. Assoc. J1 - ICA-Abs VL - 1 SP - 344 EP - Y1 - 2019/07/15 PB - Copernicus Publications SN - 2570-2106 UR - https://ica-abs.copernicus.org/articles/1/344/2019/ L1 - https://ica-abs.copernicus.org/articles/1/344/2019/ica-abs-1-344-2019.pdf DO - 10.5194/ica-abs-1-344-2019 ER -