Precision Angle Measurement Systems on the Basis of Ring Laser Gyro

Filatov, Yu. V.; Pavlov, P. A.; Velikoseltsev, A.

doi:10.3390/s20236930

Cited by 17 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, many measurement methods exist to realize the direction of the artillery barrel, divided into contact and noncontact measurements. Contact measurement methods include optical component measurement [3][4] and strap-down inertial navigation measurement [5] [6]. Non-contact measurement includes theodolite [7][8], total station [9] [10], and machine vision [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Error derivation of axis visualization in artillery direction accuracy test

Cheng

Han²

2022

Second International Conference on Testing Technology and Automation Engineering (TTAE 2022)

View full text Add to dashboard Cite

With the advancement of actual combat training, a high-precision artillery barrel direction measurement method is required under actual combat conditions. The total station method is the best method among the various methods. During the measurement process, the barrel axis is not visible and cannot be measured directly. The commonly used axis visualization method introduces measurement errors. This paper analyzes the reasons for the error of the visualization method. Based on the rotation relationship between the coordinate systems, the implicit function relationship between the error and the measurement direction is derived by using the Euler-Rodrigues equation. Finally, an experiment is carried out with a particular type of artillery to verify the rationality of the functional relationship.

show abstract

Section: Introductionmentioning

confidence: 99%

Error derivation of axis visualization in artillery direction accuracy test

Cheng

Han²

2022

Second International Conference on Testing Technology and Automation Engineering (TTAE 2022)

View full text Add to dashboard Cite

show abstract

“…That is why in the best angle measuring systems (for example, the angle comparator, PTB, Germany [ 4 ]), the diameter of the angle scale reaches 400 mm. When using ring lasers (RL) [ 10 , 11 ], the circular scale is formed by the structure of the electromagnetic field of counter propagating waves, and the distance between the strokes is equivalent to the period of the standing wave formed in the RL resonator. This distance is also determined by the wavelength of the light.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of the Image Metric of Periodic Structures in an Opto-Digital Angle Measurement System

Королев

Lukin

Filatov

et al. 2021

Sensors

View full text Add to dashboard Cite

Measurement of the object angular position and its change is one of the important tasks in measurement technique. Our method is based on determination of the angular position of a 2D periodical optical pattern (2D mark) at the object, captured by the sensor of a digital camera. System performance can be frustrated by errors in determination of the spot coordinates on the camera sensor; by the presence of lens aberrations; by deviations from the parallelism of the pattern planes and the camera sensor; and by differences between the actual spots positions and the ideal grid. In the paper we discuss the effect of these errors and the way to correct or eliminate them. We have developed the mathematical routine and the corresponding numerical codes for correction of the said errors. The code and the routine we checked in a real experiment. It has shown that the correction decreases the standard deviation in 15 times.

show abstract

“…Laser gyroscope is a new generation of inertial measurement element. Compared with traditional mechanical gyroscope, it has many outstanding advantages and has been widely used in many fields [1]. The accuracy of the output signal of laser gyro will directly affect the alignment efficiency of inertial navigation system.…”

Section: Introductionmentioning

confidence: 99%

Laser gyro signal filtering by combining CEEMDAN and principal component analysis

Huang¹,

Lu²,

Liu³

2021

J. vibroeng.

View full text Add to dashboard Cite

In order to suppress the random shift error of laser gyro and improve the practical precision of inertial navigation system, an improved gyro filtering method is proposed by combining the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and principal component analysis (PCA). Firstly, the gyro signal is decomposed by CEEMDAN, and the noise energy of each intrinsic mode function (IMF) is estimated according to the distribution model of noise energy. Then, on basis of noise energy, the principal component analysis is used to remove the noise IMF to achieve the final denoising of gyro signal. In the proposed method, CEEMD can improve the mode mixing and denoising effect of gyro signal. Moreover, PCA is used to decompose each IMF. According to the noise energy, the noise of each IMF is removed adaptively to avoid the selection of noise IMF and better retain the useful information of the signal. The proposed method is completely dependent on the characteristics of gyro signal and has good adaptability and strong denoising ability. Furthermore, the filtered effect of different methods is analyzed by overlapping Allan variance. The experimental results show that the proposed method can suppress the gyro random drift more efficiently, and the effect of removing noise is better than EMD threshold method and EMD correlation coefficient method.

show abstract

Precision Angle Measurement Systems on the Basis of Ring Laser Gyro

Cited by 17 publications

References 17 publications

Error derivation of axis visualization in artillery direction accuracy test

Error derivation of axis visualization in artillery direction accuracy test

Reconstruction of the Image Metric of Periodic Structures in an Opto-Digital Angle Measurement System

Laser gyro signal filtering by combining CEEMDAN and principal component analysis

Contact Info

Product

Resources

About