Dr. Yang Linghui Profile

Dr. Yang Linghui

at Tianjin Univ

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 8 July 2022 Paper

Calibration and measurement space inconsistency analysis for workshop measurement positioning system (wMPS)

Rao Zhang, Shendong Shi, Jiarui Lin, Shuo Yang, Linghui Yang

Proceedings Volume 12282, 122820K (2022) https://doi.org/10.1117/12.2612132

KEYWORDS: Calibration, Measurement devices, Precision measurement

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Proceedings Article | 8 July 2022 Paper

Online time-space calibration method of hybrid wMPS-IMU system

Rui Deng, Linghui Yang, Shendong Shi, Anrui Guo, Yongjie Ren

Proceedings Volume 12282, 122820F (2022) https://doi.org/10.1117/12.2611629

KEYWORDS: Calibration, Transmitters, Receivers, Clocks, Signal processing, Gyroscopes, Sensors, Precision calibration, Motion measurement, Manufacturing

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Limited by the principle of multi-angle intersection measurement, photoelectric scanning measurement systems such as workshop Measuring and Positioning System (wMPS) and indoor Global Positioning System (iGPS) have systematical positioning errors when measuring moving targets. Fusing target movement information can effectively compensate the positioning error introduced by the relative motion between the target and the transmitter. Inertial measurement systems are capable of high-frequency, all-weather and autonomous rotation and acceleration measurement. They have good measurement complementarity with photoelectric scanning measurement systems. Integrating movement information from inertial measurement unit (IMU) is an effective method to improve the dynamic measurement performance. Inertial information fusion needs two preconditions: the first one is clock synchronization and the second one is spatial alignment. In response to the two problems above, we research on wMPS and propose a wMPS-IMU integrated online calibration method. The time offset of the two systems is precisely calibrated by compensating the delay between the wMPS reference clock and the IMU clock. Due to the fact that wMPS receivers and the IMU are connected as a rigid body, the rotation R and the translation T between the wMPS and the IMU can be easily calibrated through a linear estimation method. Our novel method benefits to achieve real-time online temporal and spatial calibration without the help of any external measurement equipment and prior information and significantly improves the applicability of wMPS. Verification experiments were carried out. A three-axis turntable and a linear guide were utilized as the roundness and straightness references. The calibration experiment shows that the calibration accuracy of our method is at the same level as that achieved from the high accuracy coordinate measuring machine (CMM). The precision evaluation experiment shows that the hybrid wMPS-IMU system calibrated through the proposed method has slightly better dynamic performance than that calibrated on a CMM. This method is fully verified to be effective.

Proceedings Article | 9 December 2021 Paper

Dense three-dimensional point continuous measurement based on triple line-scan cameras

Ruiying Liao, Luyao Ma, Linghui Yang, Jigui Zhu

Proceedings Volume 12030, 120302M (2021) https://doi.org/10.1117/12.2617524

KEYWORDS: Cameras, Line scan image sensors, Imaging systems, Motion models, 3D metrology, Motion measurement, 3D modeling, Optimization (mathematics)

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Proceedings Article | 12 March 2020 Paper

Robust 6DOF measurement for non-overlapping multi-camera systems based on uncertainty-weighted space resection

Zhiyuan Niu, Linghui Yang, Yongjie Ren, Jiarui Lin, Jigui Zhu

Proceedings Volume 11439, 114391I (2020) https://doi.org/10.1117/12.2550173

KEYWORDS: Cameras, Imaging systems, 3D metrology, Calibration, Control systems, Navigation systems, Matrices, Zinc, Aerospace engineering, Reliability

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Proceedings Article | 12 March 2020 Paper

A multi-dimensional evaluation method of the angle measurement performance for the transmitter

Zhenyu Zhang, Linghui Yang, Jiarui Lin, Shendong Shi, Jigui Zhu

Proceedings Volume 11439, 1143918 (2020) https://doi.org/10.1117/12.2548311

KEYWORDS: Transmitters, Receivers, Signal processing, Manufacturing, Distributed computing

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Proceedings Article | 12 March 2020 Paper

Research on the application of indoor GPS in aircraft assembly

Hui Zhang, Xin Pan, Jinpeng Bai, Linghui Yang

Proceedings Volume 11439, 114390T (2020) https://doi.org/10.1117/12.2543384

KEYWORDS: Global Positioning System

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Proceedings Article | 12 March 2020 Paper

Femtosecond pulse laser distance and angle interferometer

Xu Liang, Jiarui Lin, Linghui Yang, Tengfei Wu, Yang Liu, Jigui Zhu

Proceedings Volume 11439, 114390V (2020) https://doi.org/10.1117/12.2543479

KEYWORDS: Distance measurement, Interferometers, Femtosecond phenomena, Pulsed laser operation, Retroreflectors, Calibration, Beam splitters, Interferometry, Fourier transforms, Camera shutters

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