TY - GEN
T1 - Method to suppress the temperature dependency of scale factor in measurement-while-drilling surveying utilizing fiber optic gyroscope
AU - He, Changhong
AU - Yang, Chuanchuan
AU - Wang, Qin
AU - Xie, Jun
AU - Tan, Zhongwei
AU - Wang, Ziyu
AU - Wang, Xinyue
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/30
Y1 - 2015/11/30
N2 - We analyze the north finding error caused by temperature dependency of scale factor theoretically in measurement-while-drilling surveying utilizing single-axis fiber optic gyroscope (FOG). Theoretical analysis indicates that the error will increase as the inclination angle increases, and it reaches the maximum when the sensitive axis of FOG points to the east or the west. To suppress the temperature dependency, we first employ a polynomial model to compensate the system error of scale factor. And then we give a formula to estimate the optimal calibration value of scale factor, which can reduce the north finding error caused by the random error of scale factor. Experiments with a specific single-axis FOG demonstrate that, with our method, the north finding error can be reduced from 3.966deg to 1.050deg.
AB - We analyze the north finding error caused by temperature dependency of scale factor theoretically in measurement-while-drilling surveying utilizing single-axis fiber optic gyroscope (FOG). Theoretical analysis indicates that the error will increase as the inclination angle increases, and it reaches the maximum when the sensitive axis of FOG points to the east or the west. To suppress the temperature dependency, we first employ a polynomial model to compensate the system error of scale factor. And then we give a formula to estimate the optimal calibration value of scale factor, which can reduce the north finding error caused by the random error of scale factor. Experiments with a specific single-axis FOG demonstrate that, with our method, the north finding error can be reduced from 3.966deg to 1.050deg.
KW - fiber optic gyroscope
KW - measurement-while-drilling
KW - north finding
KW - scale factor
KW - temperature dependency
UR - http://www.scopus.com/inward/record.url?scp=84960904180&partnerID=8YFLogxK
U2 - 10.1109/OECC.2015.7340274
DO - 10.1109/OECC.2015.7340274
M3 - Conference contribution
AN - SCOPUS:84960904180
T3 - 2015 Opto-Electronics and Communications Conference, OECC 2015
BT - 2015 Opto-Electronics and Communications Conference, OECC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - Opto-Electronics and Communications Conference, OECC 2015
Y2 - 28 June 2015 through 2 July 2015
ER -