Title :
A New Method of Double Electric Compass for Localization
Author :
Lu, Hao ; Zhao, Jiyin ; Li, Xiaomeng ; Li, Jianpo
Author_Institution :
Dept. of Commun., Jilin Univ., Changchun
Abstract :
A new electric compass technique is proposed for localization to improve the reliability of automobile navigation system. On account of its sensitivity to external interferences of the magnetic field, the electric compass itself is not accurate enough to be used for localization compared with the rate gyroscope. To overcome this shortcoming, in this research, a robust electric compass was designed by using two electric compasses to efficiently cancel out the low-frequency interferences. That is, in this paper, a double electric compass predictive calibration algorithm which corrects irregular and long-lasting magnetic-field interferences is newly proposed and implemented. When the external interferences are eliminated from the double electric compass, it becomes much more accurate than the gyroscope-based system that suffers from accumulative drift error. The reliability and performance of the designed system were verified through real navigation experiments
Keywords :
automobiles; calibration; compasses; electromagnetic interference; gyroscopes; interference suppression; magnetic sensors; navigation; automobile navigation system; double electric compass; drift error; gyroscope; interference compensation; magnetic sensors; magnetic-field interferences; predictive calibration algorithm; Automobiles; Azimuth; Calibration; Global Positioning System; Gyroscopes; Interference elimination; Magnetic sensors; Navigation; Prediction algorithms; Robustness; Double Electric Compass; Interference Compensation; Localization; Magnetic Sensors;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1714076
