An alternative way to calibrate ubisense real-time location system via multi-camera calibration methods

Ubisense Real-Time Location System is considered. The approach is based on capturing the raw angles of arrival and projecting them into virtual image plane, as if sensors were perspective cameras. The extrinsic parameters (position and orientation) of sensors are then obtained by calibration of virtual perspective cameras using multicamera calibration methods. An application considered in the paper is rapid deployment of Ubisense system for tracking in sports. Survey points can be easily determined from the standard markings on the court floor, which makes calibration from survey points coordinates more convenient than measuring sensor positions, which is prerequisite for standard Ubisense system calibration.