Title :
A New Method of Double Electric Compass for Localization in Automobile Navigation
Author :
Li, Xiaomeng ; Zhou, Qiuzhan ; Lu, Shaofang ; Lu, Hao
Author_Institution :
Dept. of Commun., Jilin Univ., Changchun
Abstract :
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; instruments; interference; measurement errors; mobile robots; navigation; predictive control; accumulative drift error; automobile navigation; compass predictive calibration algorithm; localization; low-frequency interference cancellation; magnetic field external interferences; robust double electric compass; Automobiles; Calibration; Global Positioning System; Gyroscopes; Interference elimination; Magnetic sensors; Magnetic separation; Navigation; Prediction algorithms; Robustness; Double Electric Compass; Interference Compensation; Localization; Magnetic Sensors;
Conference_Titel :
Mechatronics and Automation, Proceedings of the 2006 IEEE International Conference on
Conference_Location :
Luoyang, Henan
Print_ISBN :
1-4244-0465-7
Electronic_ISBN :
1-4244-0466-5
DOI :
10.1109/ICMA.2006.257606
