Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2014.1376.1380ZhengXueli FuJingqi WuYan ChenJing 72014137In this study, the GMR sensor and triaxial attitude sensor
were used to constitute a geomagnetic azimuth measurement system. Based on the
error analysis of the triaxial GMR sensor and carrier interfering field, the
study proposed an error compensation model which includes the non-orthogonal
compensation, sensitivity compensation, zero compensation, hard and soft magnetic
interference compensation. Meanwhile, the inversion algorithm based on model
identification is studied and the parameter of error characteristics is calculated
by it. After compensation, the azimuth error of the measurement system is reduced
to 0.34% from 3.83% and the expected objective is realized.]]>Qiao, L., J.Y. Liu, G.L. Zheng and Z. Xiong,20093777785Yun, J.M., J.P. Ko and J.M. Lee,200857864873Yuan, Z.R.,2001205859Jurman, D., M. Jankovec, R. Kamnik and M. Topic,2007138411420Jing-Lei, G. and W. Zhi-Jian,201110152157Zheng, X.L. and J.Q. Fu,20122012pp: 32693272