Real-time Players Movement Monitoring on Basketball Game using UWB Multidrop Ranging and Trilateration

摘要

Player movement data is used by the coach or team manager to analyze the condition of each player and plan the best strategy for the match. In general, localization of existing players uses a GPS or either an image processing. However, GPS has a drawback that it cannot be used indoor, while image processing requires high-speed cameras and also affected by its attacking angle and lighting factors in capturing players' positions. UWB (Ultra-Wide Band) is a low energy radio signal modulation technology for short-distance communication with high bandwidth in most radio wave spectrums. Applications of UWB radio have been used in everyday life, including positioning. DWM1000 is one of the devices that use UWB technology. This research applies DWM1000 in such position monitoring of basketball players' movement in the field. DWM1000 is a point to point ranging device, therefore for multiple node positioning, a multidrop technique is used between the three anchor nodes and five player-nodes. In addition, to overcome incomplete ranging and outlier positioning data, moving average filtering is applied in the trilateration software as preprocessing.