›› 2014, Vol. 27 ›› Issue (6): 9-.

• Articles • Previous Articles     Next Articles

A Novel NLOS Error Suppression Algorithm Based on TDOA Wireless Positioning

WANG Zheng,CHEN Bing   

  1. (College of Computer Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
  • Online:2014-06-15 Published:2014-06-14

Abstract:

NLOS (Non Line of Sight) error is a key factor that affects positioning accuracy of various wireless positioning algorithms.In order to decrease NLOS error,this article proposes a NLOS error suppression algorithm based on TDOA (Time Difference of Arrival),which introduces innovation threshold and corrected parameter to improve the iterative process of Kalman filter that effectively restrain NLOS error in TDOA measurements.Simulation results show that the novel algorithm helps improve positioning accuracy and has better performance than traditional NLOS error suppression algorithms.

Key words: wireless location;TDOA;NLOS error;kalman filter

CLC Number: 

  • TN929.5