Title :
On gravity disturbance compensation technology of high-precision SINS based on B-spline method
Author :
Lin Cong ; Zhong Zhao ; Xiaobu Yang
Author_Institution :
Postgrad. in Northwestern Polytech. Univ., Xi´an, China
Abstract :
Errors of high-precision strapdown inertial navigation system (SINS) resulted by gravity disturbance vector cannot be neglected. After analyzed principal of how gravity disturbance affects precision of SINS, the errors induced by gravity disturbance were compensated using B-spline least-square method. Simulation results show that the compensation of B-spline gravity disturbance model can reduce the SINS errors effectively and improve the navigation accuracy clearly.
Keywords :
accelerometers; gravity; gyroscopes; inertial navigation; least squares approximations; measurement errors; splines (mathematics); B-spline gravity disturbance model; B-spline least-square method; B-spline method; gravity disturbance compensation technology; high precision SINS; high precision strapdown inertial navigation system; Accelerometers; Accuracy; Gravity; Inertial navigation; Silicon compounds; Splines (mathematics);
Conference_Titel :
Guidance, Navigation and Control Conference (CGNCC), 2014 IEEE Chinese
Conference_Location :
Yantai
Print_ISBN :
978-1-4799-4700-3
DOI :
10.1109/CGNCC.2014.7007213
