Title :
Gyroscope Free Strapdown Inertial Navigation System Using rotation modulation
Author :
Li, An ; Qin, FangJun ; Xu, Jiangning ; SaiJiang
Author_Institution :
Dept. of Navig. Eng., Navy Univ. of of Eng., Wuhan, China
Abstract :
In order to improve precision of Gyroscope FreeStrapdown Inertial Navigation System (GFINS), the idea of rotation modulation is adopted. And a new scheme of GFINS using 10 accelerometers is proposed, which is convenient for modulation all of the accelerometers. Through rotating around three orthogonal axes respectively, biases of all 10 accelerometers in the GFINS can be modulated by sinusoid and cosine functions. Procedures of both navigation calculation and rotation modulation in the 10-accelerometer based GFINS are derived. The scheme of GFINS and the rotation modulation method are simulated and verified. Simulation results show that precision of GFINS has been improved by more than 50% after rotation modulation.
Keywords :
accelerometers; gyroscopes; inertial navigation; accelerometers; gyroscope free strapdown inertial navigation system; rotation modulation; Accelerometers; Automation; Costs; Fiber lasers; Force measurement; Gyroscopes; Inertial navigation; Military computing; Optical fiber sensors; Seismology; Rotation modulation; Strapdown Inertial Navigation System; accelerometer; gyroscope free;
Conference_Titel :
Intelligent Computation Technology and Automation, 2009. ICICTA '09. Second International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-0-7695-3804-4
DOI :
10.1109/ICICTA.2009.613
