A localization system for tracking robot

This paper presents a target orientation identifying system for a tracking robot, which contains two parts: the transmitter and the receiver. The transmitter is carried by the target and transmits a certain signal. The receiver, with an antenna array, can identify the orientation of the target by measuring the phase difference of signal received by different antennas in the antenna array. The advantages of the system are (1) precise localization in short distance; (2) robustness in target loss; (3) the simple structure. The prototype was constructed and a number of experiments were carried out, demonstrating the feasibility of the system.