Title :
Improving availability of AGPS positioning algorithm with fuzzy theory
Author :
Jizhong Li ; Jinmei Liu
Author_Institution :
Sci. & Inf. Coll., Qingdao Agric. Univ., Qingdao, China
Abstract :
AGPS (assisted global positioning system) positioning method was researched with fuzzy theory in this paper. Positioning errors were found through the analysis of an AGPS positioning algorithm with mobile station (MS) clock error. These errors were engendered to induce a bias of reference moment. The fuzzy number of whole chips can be determined by a satellite´s maximum angle of elevation from the base station (BS), and the positioning error of several hundred kilometers can be eliminated. This method improved AGPS positioning method availability.
Keywords :
Global Positioning System; fuzzy set theory; AGPS positioning algorithm; BS; MS; assisted Global Positioning System positioning method; base station; fuzzy theory; mobile station clock error; positioning errors; satellite maximum angle of elevation; Accuracy; Algorithm design and analysis; Clocks; Global Positioning System; Position measurement; Satellites; Semiconductor device measurement;
Conference_Titel :
Information Science and Technology (ICIST), 2013 International Conference on
Conference_Location :
Yangzhou
Print_ISBN :
978-1-4673-5137-9
DOI :
10.1109/ICIST.2013.6747707
