Study on the Error of Four-Position North Seeking System Based on the Single Axis Fiber Optic Gyroscope

The method to analysis the influence of error sources on the fiber optic gyroscope north seeker is presented in this paper. The influence of various error sources of the north seeker are investigated comprehensively. The simulation results indicate that the precision of gyroscope is the most important influence factor; the influence of the position rotation error and mounting error are greater than that of the inclination angle measurement error. Based on the analysis, the advisable scheme to improve the accuracy of the four-position north seeker is proposed. The experimental results met the accuracy requirement well, which proved that the compensation and error analysis method in this paper are effective and feasible.

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Research on the Characteristic of Bias Error and Noise Analysis Method of Fiber Optic Gyroscope

Acta Optica Sinica ◽

10.3788/aos201434.1206006 ◽

2014 ◽

Vol 34 (12) ◽

pp. 1206006

Author(s):

杨远洪 Yang Yuanhong ◽

孟晨雪 Meng Chenxue

Keyword(s):

Fiber Optic ◽

Noise Analysis ◽

Bias Error ◽

Analysis Method ◽

Fiber Optic Gyroscope

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Research on Two-Position North-Seeking Method Based on the Single Axis FOG

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.301-303.1489 ◽

2011 ◽

Vol 301-303 ◽

pp. 1489-1494 ◽

Cited By ~ 1

Author(s):

Deng Hua Li ◽

Feng Zhou ◽

Xi Bao Wu

Keyword(s):

Fiber Optic ◽

Angular Rate ◽

Fiber Optic Gyroscope ◽

Negative Pulse ◽

The Third ◽

The North ◽

Specific Direction ◽

Working Principle ◽

Direction Information

The basic working principle and the two-position north-seeking method based on single-axis FOG(fiber optic gyroscope) is researched in this paper. Improved north-seeking method was proposed to solve the problem in the two-position FOG north-seeking scheme. To Sample in three positions of 0º, 90ºand 180ºseparately and obtain the measurement values of angular rate in these three positions. Then according to the measurement values of angular rate in the first and the third positions to calculate the north-seeking angle, and using the positive and negative pulse outputs of the FOG in the second position to obtain the specific direction information of carrier. So that, accomplish the north-seeking in the range of 0～360° for single-axis FOG. The experiment results showed that the accuracy of the improved two-position north-seeking program based on single-axis FOG is 0.101 (1σ) within 4 minutes.

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Scale factor calibration and dynamic angle measurement method based on self-collimator and fiber optic gyroscope

Optical Fiber Technology ◽

10.1016/j.yofte.2019.101945 ◽

2019 ◽

Vol 52 ◽

pp. 101945 ◽

Cited By ~ 1

Author(s):

Jiapeng Mou ◽

Tengchao Huang ◽

Guangyao Ying ◽

Shuangliang Che ◽

Xiaowu Shu

Keyword(s):

Measurement Method ◽

Fiber Optic ◽

Angle Measurement ◽

Scale Factor ◽

Fiber Optic Gyroscope ◽

Dynamic Angle

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Research on Vibration Angle of Six Degree-of-Freedom

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.440 ◽

2012 ◽

Vol 226-228 ◽

pp. 440-443

Author(s):

Chun Zhi Li ◽

Ying Chen ◽

Qing Lin Liu

Keyword(s):

Measurement Accuracy ◽

Fiber Optic ◽

Rotation Angle ◽

Angular Rate ◽

Testing System ◽

Fiber Optic Gyroscope ◽

Practical Application ◽

Accuracy Requirement ◽

Testing Method ◽

Six Degree Of Freedom

Based on fiber optic gyroscope technique new method of rotation angle testing in three-axis vibration is proposed in this paper, and the theory of fiber optic gyroscope is introduced as well. According to the measurement accuracy requirement, the angle testing system of FOG is designed by analyzing the environment of three-axis vibration. It was applied in experimental investigation of rotation angle in three-axis vibration with the FOG testing system and the real-time angular rate signal was processed by frequency analysis. The results of practical application show that it is feasibility and validity of angle testing method by means of FOG technique.

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SPACE-BORNE LASER ALTIMETER GEOLOCATION ERROR ANALYSIS

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-2-1169-2018 ◽

2018 ◽

Vol XLII-2 ◽

pp. 1169-1174

Author(s):

Y. Wang ◽

J. Fang ◽

Y. Ai

Keyword(s):

Measurement Error ◽

Control Point ◽

Angle Measurement ◽

Attitude Measurement ◽

Propagation Equation ◽

Laser Altimeter ◽

Error Sources ◽

The Past ◽

Laser Control ◽

Geolocation Accuracy

This paper reviews the development of space-borne laser altimetry technology over the past 40 years. Taking the ICESAT satellite as an example, a rigorous space-borne laser altimeter geolocation model is studied, and an error propagation equation is derived. The influence of the main error sources, such as the platform positioning error, attitude measurement error, pointing angle measurement error and range measurement error, on the geolocation accuracy of the laser spot are analysed by simulated experiments. The reasons for the different influences on geolocation accuracy in different directions are discussed, and to satisfy the accuracy of the laser control point, a design index for each error source is put forward.

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