Development of a Mobile Kinematic GPS Logger and Its Evaluation of Positioning Accuracy

Since kinematic Global Positioning System (GPS) has highly accurate positioning ability, it has been used for sports kinesiology such as 3D movement measurement and analysis. Unlike camcorders, GPS loggers must be attached to measuring subjects, most of which are bodies of athletes and their tools. Therefore we have developed a compact and lightweight GPS logger named AT-H-02 with post-processed kinematic mode. The AT-H-02 is 1/7 more compact and 1/5 less weight than another mobile GPS logger with kinematic mode GCX2 by SOKKIA. The purpose of this report is to validate positioning accuracy of the AT-H-02 during outdoor sports. From experimental results using electric assistant tricycle, we found the positioning accuracy of the AT-H-02 is 5mm in horizontal and 14mm in vertical direction. It can be said that the AT-H-02 has enough positioning accuracy for kinesiology of outdoor sports.