@inproceedings{SisLab3832,
       booktitle = {H?i ngh{\d i} Qu?c gia l?n th? XXII v? {\DJ}i?n t?, Truy?n th{\^o}ng v{\`a} C{\^o}ng ngh? Th{\^o}ng tin},
           title = {C{\h a}i thi?n {\dj}? ch{\'i}nh x{\'a}c c{\h u}a h? th?ng {\dj}{\d i}nh v{\d i} trong nh{\`a} PDR s? d{\d u}ng m{\~a} QR},
          author = {Ho{\`a}ng D??ng Nguy?n and Th{\d i} Th{\'u}y Qu{\`y}nh Tr?n},
            year = {2019},
           pages = {48--52},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3832/},
        abstract = {H? th?ng {\dj}{\d i}nh v{\d i} trong nh{\`a} PDR (Precise Dead Reckoning) l{\`a} h? th?ng {\dj}{\d i}nh v{\d i} t? tr{\d i} cho {\dj}?i t??ng di chuy?n t?c {\dj}? th?p ({\dj}i b?) d?a tr{\^e}n d? li?u thu th?p t? c{\'a}c c{\h a}m bi?n. Nh??c {\dj}i?m ch{\'i}nh c{\h u}a h? th?ng l{\`a} sai s? t{\'i}ch l{\~u}y trong qu{\'a} tr{\`i}nh {\dj}{\d i}nh v{\d i}. B{\`a}i b{\'a}o th?c hi?n vi?c c{\h a}i thi?n {\dj}? ch{\'i}nh x{\'a}c c{\h u}a h? PDR b?ng c{\'a}ch s? d{\d u}ng m{\~a} QR t{\d a}i m?t s? {\dj}i?m chu?n {\dj}? lo{\d a}i b{\h o} sai s? t{\'i}ch l{\~u}y. H? th?ng k?t h?p gi?a PDR v{\`a} m{\~a} QR {\dj}??c th?c hi?n tr{\^e}n {\dj}i?n tho{\d a}i th{\^o}ng minh c{\'o} sai s? trung b{\`i}nh kho{\h a}ng 0,65 m t?t h?n so v?i h? PDR kh{\^o}ng k?t h?p m{\~a} QR kho{\h a}ng 6,4 l?n.}
}