Three dimensional attitude measurement of the beacon based on a single PSD

Liu, Jin; Yang, Haima

doi:10.1016/j.ijleo.2017.06.053

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…So researchers have done some research on the measuring systems based on PSD. Liu and Yang (2017) studied three-dimensional attitude measurement of the beacon based on a single PSD and verified the feasibility of the method through experiments. Rodríguez-Navarro et al (2017) developed an indoor positioning system for detecting a moving target, which was achieved by a single PSD and an infrared emitting diode (IRED) located on the moving target.…”

Section: Introductionmentioning

confidence: 96%

Three-dimensional coordinate measurement algorithm by optimizing BP neural network based on GA

Lü

Wang

et al. 2019

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Purpose The purpose of this paper is to solve the problem that the analytic solution model of spatial three-dimensional coordinate measuring system based on dual-position sensitive detector (PSD) is complex and its precision is not high. Design/methodology/approach A new three-dimensional coordinate measurement algorithm by optimizing back propagation (BP) neural network based on genetic algorithm (GA) is proposed. The mapping relation between three-dimensional coordinates of space points in the world coordinate system and light spot coordinates formed on dual-PSD has been built and applied to the prediction of three-dimensional coordinates of space points. Findings The average measurement error of three-dimensional coordinates of space points at three-dimensional coordinate measuring system based on dual-PSD based on GA-BP neural network is relatively small. This method does not require considering the lens distortion and the non-linearity of PSD. It has simple structure and high precision and is suitable for three-dimensional coordinate measurement of space points. Originality/value A new three-dimensional coordinate measurement algorithm by optimizing BP neural network based on GA is proposed to predict three-dimensional coordinates of space points formed on three-dimensional coordinate measuring system based on dual-PSD.

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Section: Introductionmentioning

confidence: 96%

Three-dimensional coordinate measurement algorithm by optimizing BP neural network based on GA

Lü

Wang

et al. 2019

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“…Moreover, the rotating laser device can be employed in many fields. In the field of optical communication [15], highquality linearly polarized light can be used to replace the laser beam, making it a highly efficient and flexible encoder. In the field of precision machinery [16], this device can be applied to the axial calibration of precision instruments [17].…”

Section: Introductionmentioning

confidence: 99%

Position Measurement of Laser Center by Using 2-D PSD and Fixed-Axis Rotating Device

et al. 2019

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Photoelectric non-contact measurement methods have been widely implemented in space target location, micro-displacement measurement and space optical communication. In term of the reliability and precision of measurement systems, it is a great significance to obtain the laser center location accurately. Since the two-dimensional position sensitive detector (2-D PSD) can continuously detects the gravity center position of the laser spot on its photosensitive surface, this paper provides a flexible method with high precision for the nonlinear correction of PSD as well as a new idea for PSD-based moving laser center positioning. Above all, a laser device system that rotating around a fixed-axis is designed, and the rotation angle can be controlled with the rotation accuracy of 0.5 • . The trace of the gravity center of the rotating spot generated by the device on the PSD surface is detected, and then the laser center location is obtained after further processing of data. In order to improve the detection accuracy of PSD, this research mainly focuses on the nonlinear correction method of the detector and the fitting method of the gravity center trace of the laser spot. Moreover, the effects of different sizes of light spots projected onto the 2-D PSD on the collected photocurrent and estimated coordinates were analyzed by experiments. From the experimental results, the non-linear error of PSD is corrected by the error curved surface interpolation method, the overall error is reduced by more than 32%, and the linearity of the positioning of the laser moving along the diagonal of PSD is 0.2%.

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Widely sensitive optical humidity module by using acrylic resin and a position sensitivity detector

Yu¹,

Yu²,

Rim³

et al. 2020

Opt Quant Electron

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Three dimensional attitude measurement of the beacon based on a single PSD

Cited by 3 publications

References 5 publications

Three-dimensional coordinate measurement algorithm by optimizing BP neural network based on GA

Three-dimensional coordinate measurement algorithm by optimizing BP neural network based on GA

Position Measurement of Laser Center by Using 2-D PSD and Fixed-Axis Rotating Device

Widely sensitive optical humidity module by using acrylic resin and a position sensitivity detector

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