Accurate Radio-Based Moving Object Tracking and Its Application to Sports Analysis

This paper presents an accurate, radio-based and real-time moving object tracking method and its application to sports analysis. The present tracking method is based on Kalman filtering using a phase difference compensation technique and a non-uniform pulse transmission scheme. Conventional Kalman-based tracking methods often require time, amplitude, phase information and their derivatives for each receiver antenna; however, their location estimation accuracy does not become good even with many transmitting pulses. The presented method employs relative phase-difference information and a non-uniform pulse generation scheme, which can greatly reduce the number of transmitting pulses while preserving the tracking accuracy.