A Fast and Non-Directional Calibration Method for Fiber Optic Gyro Inertial Navigation System

2019 ◽  
Author(s):  
Zhi Wang ◽  
Fangjun Qin ◽  
Feng Zha ◽  
Lin Tong ◽  
Chunfu Huang
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Fiber Optic ◽  
Inertial Navigation ◽  
Calibration Method ◽  
Fiber Optic Gyro

A self-calibration method for non-orthogonal angles of gimbals in rotational inertial navigation system based on fiber optic gyro

2017 ◽  
Vol 40 (13) ◽  
pp. 3665-3674 ◽  
Author(s):  
Zengjun Liu ◽  
Lei Wang ◽  
Wei Wang ◽  
Tianxiao Song
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Fiber Optic ◽  
Inertial Navigation ◽  
Calibration Method ◽  
Measurement Unit ◽  
Fiber Optic Gyroscope ◽  
Self Calibration ◽  
Photoelectric Encoder ◽  
Navigation Accuracy

Rotating modulation technique is a mature method that has been widely used in the rotational inertial navigation system (RINS). Tri-axis RINS has three gimbals, and the Inertial Measurement Unit can rotate along three directions to modulate the inertial devices’ errors, so that the navigation accuracy of the system can be greatly improved. However, the outputs of attitudes are easily affected by the non-orthogonal angles of gimbals, which should be accurately calibrated and compensated. In this paper, the effects of the non-orthogonal angles on the attitudes are discussed detailed and simulations based on Matlab are conducted to verify that firstly; then, a self-calibration method based on the outputs of the fiber optic gyroscope and photoelectric encoder is proposed. Experimental results in a real tri-axis RINS show that the attitude outputs accuracy are improved from 150” to less than 10”, which verify the practicability of the calibration method proposed in this paper.

Error Modulation Scheme Analyzing for Dual-Axis Rotating Fiber-Optic Gyro Inertial Navigation System

2012 ◽  
Vol 10 (7) ◽  
pp. 1359-1363 ◽  
Author(s):  
Hongliang Yin ◽  
Gongliu Yang ◽  
Ningfang Song ◽  
Rui Jiang ◽  
Yanyong Wang
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Fiber Optic ◽  
Inertial Navigation ◽  
Modulation Scheme ◽  
Fiber Optic Gyro

scholarly journals Optimal Parameter Design of Coarse Alignment for Fiber Optic Gyro Inertial Navigation System

Sensors ◽  
2015 ◽  
Vol 15 (7) ◽  
pp. 15006-15032 ◽  
Author(s):  
Baofeng Lu ◽  
Qiuying Wang ◽  
Chunmei Yu ◽  
Wei Gao
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Fiber Optic ◽  
Optimal Parameter ◽  
Inertial Navigation ◽  
Parameter Design ◽  
Fiber Optic Gyro
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