AN EFFECTIVE TIME OF ADVENT-BASED SCHEME FOR MITIGATING THE INFLUENCE OF THE NON-LINE-OF-SIGHT PROPAGATION

Qinghui Wang, Wangyuan Huang

College of Information Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China

Aiming at the problem that Time of Advent-based wireless location is easily influenced by non-line-of-sight, a set of effective wireless ranging system for mitigating the influence of non-line-of-sight has been proposed in this paper. At first, the Kalman filter model has been established to eliminate the influence of non-line-of-sight, as well as the random interference. Secondly, it carries out the off-line filter simulation with test data to verify the effectiveness of the model. Finally, a set of ranging system has been designed by taking the ATmega1280 microprocessor as the controller and the nanoPAN5375 as the radio frequency chip, and it can carry out the real test on the improved ranging platform. According to the results, the designed system can accomplish the real-time dynamic filter, which can reduce the non-line-of-sight error with a high measurement precision, and it can also be applied in the location under non-line-of-sight environment directly.