Systematic calibration method based on acceleration and angular rate measurements for fiber-optic gyro SINS

2021 ◽  
Vol 92 (1) ◽  
pp. 015001
Author(s):  
Pingping Wang ◽  
Baofeng Lu ◽  
Pengxiang Yang ◽  
Feng Chen
Keyword(s):  
Fiber Optic ◽  
Angular Rate ◽  
Calibration Method ◽  
Fiber Optic Gyro

Modeling Study on Random Error of Fiber Optic Gyro

2012 ◽  
Vol 239-240 ◽  
pp. 167-171
Author(s):  
Fan Zhang
Keyword(s):  
Random Walk ◽  
Random Error ◽  
Fiber Optic ◽  
Angular Rate ◽  
Measurement Unit ◽  
Random Errors ◽  
Fiber Optic Gyro ◽  
Zero Bias ◽  
Instability Rate ◽  
Bias Instability

An accurate modeling method for the random error of the fiber optic gyro (FOG) is presented. Taking the FOG in the inertial measurement unit of one specific inertial navigation system as the subject investigated, the method is composed of the data acquisition, preprocessing, establishing the FOG AR(2) model and performing Kalman filtering based on the model. The filtering result and the Allan variance analysis of FOG prove that the method effectively reduces the FOG random error, decreasing the angle random walk, zero-bias instability, rate random walk, angular rate ramp and quantification noise of FOG signals to less than one half of the corresponding values before the filtering of FOG random errors, which improves the accuracy of FOG.

scholarly journals Innovative self-calibration method for accelerometer scale factor of the missile-borne RINS with fiber optic gyro

2016 ◽  
Vol 24 (19) ◽  
pp. 21228 ◽  
Author(s):  
Qian Zhang ◽  
Lei Wang ◽  
Zengjun Liu ◽  
Yiming Zhang
Keyword(s):  
Fiber Optic ◽  
Calibration Method ◽  
Scale Factor ◽  
Fiber Optic Gyro ◽  
Self Calibration

A hull deformation measurement method based on fiber optic gyro angular rate matching in complex sea conditions

2021 ◽  
pp. 147509022110332
Author(s):  
Yao Li ◽  
Di Wang ◽  
Jinwu Tong
Keyword(s):  
Measurement Method ◽  
Fiber Optic ◽  
Finite Impulse Response ◽  
Angular Rate ◽  
External Noise ◽  
Deformation Measurement ◽  
Measurement Noise ◽  
Estimation Accuracy ◽  
Fiber Optic Gyro ◽  
Traditional System

In the conventional hull deformation measurement method, the external measurement noise is considered constant. However, due to the complex sea conditions and the high-frequency chatter caused by the waves, the measurement noise is colored noise. The aim of this paper is to develop a hull deformation measurement method based on fiber optic gyro (FOG) angular rate matching in complex sea conditions. On the one hand, the traditional system model is optimized to reduce the dimension, and a simplified linear state space model is proposed. On the other hand, a finite impulse response (FIR) low-pass digital filter is designed and introduced into the angular rate matching measurement method, so that the deformation estimation accuracy can still be maintained in complex sea conditions. The simulation and swing table test are designed to verify the effectiveness of the hull deformation measurement method proposed in this paper. The results show that the proposed method in this paper can effectively eliminate external noise interference and improve estimation accuracy.

The Passive Resonator Fiber Optic Gyro and Comparison to the Interferometer Fiber Gyro

1987 ◽  
Author(s):  
R. Carroll ◽  
C. D. Coccoli ◽  
D. Cardarelli ◽  
G. T. Coate
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Gyro

scholarly journals Absolute calibration method for fast-streaked, fiber optic light collection, spectroscopy systems.

2010 ◽  
Author(s):  
Mark D. Johnston ◽  
Brent Frogget ◽  
Bryan Velten Oliver ◽  
Yitzhak Maron ◽  
Darryl W. Droemer ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Calibration Method ◽  
Absolute Calibration ◽  
Light Collection
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