Recognition method of the dual-objective in a linear array CCD-based improved photoelectric measurement system using two lasers with different wavelengths

Dong, Tao; Gao, Feng; Chen, Ding; Yang, Jiuqi

doi:10.1016/j.ijleo.2020.164857

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…After the circuit processing, a trigger signal is generated [14,15]. Different wavelengths of lasers can distinguish adjacent LED detection arrays combined with narrow band filters [16]. In order to output the trigger signals in the effective detection area, this system must have sufficient sensitivity, which mainly depends on the laser power, the size of the flying object, and the height of the trajectory.…”

Section: Methodsmentioning

confidence: 99%

Measurement Method for the Flight Parameters of a Small Flying Object Using a Multi-Dimensional LED Detection Array

Dong,

Li,

Chen

et al. 2023

Photonics

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This article proposes a measurement method using a multi-dimensional LED detection array, which can be used to obtain the flight parameters (i.e., impact coordinates, flight velocity, and incident angle) of a small flying object. Firstly, the composition of the proposed system and its detection principle are described in detail. Then, a calculation model is derived according to the geometrical relationship between the different LED detection arrays, which can calculate the above flight parameters. Furthermore, numerical simulations are performed to analyze the change trend in the measurement error of the proposed system, and it can be verified that its measurement performance meets the related requirements in theory. Finally, we use the proposed system and a high-speed camera system to carry out comparison experiments with two different reference velocities of 900 m/s and 700 m/s, and the results show that the maximum deviation in the measured absolute velocity is always less than 1 m/s and that the maximum deviations of the measured coordinates of x and y are not more than 2 mm within the effective measurement range. Therefore, the proposed measurement method is feasible and effective, and it can also meet the requirements of the measurement system.

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Section: Methodsmentioning

confidence: 99%

Measurement Method for the Flight Parameters of a Small Flying Object Using a Multi-Dimensional LED Detection Array

Dong,

Li,

Chen

et al. 2023

Photonics

Self Cite

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“…To measure the above key firepower parameters, there is currently a mainstream instrument called photoelectric test system with intersecting detection areas (also called multi-light screen measurement system). Compared with other approaches, such as high-speed photography [4], photoelectricity [5], acoustic [6], radar [7], double-CCD intersection [8,9] this instrument has many advantages of high detection sensitivity, high measurement accuracy, larger velocity measurement range, low maintenance cost, easy operation, and high reliability [10]. According to the metrological legislation in each country, the measurement accuracy of each instrument should be calibrated before use.…”

Section: Introductionmentioning

confidence: 99%

Calibration method for the measurement accuracy of a photoelectric test system with intersecting detection areas using array optical signal

Chen,

Shen,

yang

et al. 2024

Speckle 2023: VIII International Conference on Speckle Metrology

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The article proposes a calibration method based on array optical signal to effectively improve the measurement accuracy of a photoelectric testing system with intersecting detection areas. According to the measurement principle of the system, the proposed calibration theory is systematically described. The aim is to map the given results in the form of vector into the time sequence. Subsequently, we develop a calibration platform whose core components are an arbitrary waveform generator and a tunable laser, and thus it can generate a set of six optical signals with an exact sequential relationship. After receiving the optical signals, some measurement results with errors are obtained by the system. Many calibration operations is performed to obtain the systematic errors, which are the statistical average of the deviation between the given results and those with errors. The results show that the comprehensive performance of the proposed calibration method is superior to that of the traditional method. In addition, the proposed calibration method relative to the traditional ones has some advantages, such as high efficiency, safety and low cost.

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“…Currently, there is a mainstream instrument called multi-light screen array measurement system (or photoelectric testing system with intersecting detection areas) in the field. In comparison with other approaches, such as high-speed camera [3,4], photoelectricity [5], acoustic [6], radar [7], double-CCD intersection [8,9] this instrument has many advantages of high detection sensitivity, high measurement accuracy, larger velocity measurement range, low maintenance cost, easy operation, and high reliability [10]. Besides, this instrument is used in other fields.…”

Section: Introductionmentioning

confidence: 99%

Accuracy calibration of the multi-light screen measurement system using array optical signal

Chen,

Deng,

Yang

et al. 2024

Meas. Sci. Technol.

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The multi-light screen measurement systems must be calibrated before being come into use, and a calibration method using live-fire practice is generally adopted. However, this method has many shortcomings, such as high cost, high risk and poor efficiency. To effectively improve the measurement accuracy of a multi-light screen measurement system, we propose a calibration method based on array optical signal in the paper. According to the measurement principle of the system, the proposed calibration theory is systematically described. The aim is to map the given measurement results in the form of vector into the specified time sequence. Furthermore, we develop a calibration platform whose core components are an arbitrary waveform generator and a tunable laser, and thus it can generate a set of six optical signals with an exact sequential relationship. After receiving the optical signals, some measurement results with errors are obtained by the system. Many calibration operations are performed to obtain the systematic errors, which are the statistical average of the deviation between the given measurement results and those with errors. Finally, we use the proposed calibration method combined with the error tensor and the traditional one to carry out comparison experiments. The results show that the proposed calibration method is superior to the traditional method in terms of comprehensive performance. In addition, the proposed calibration method relative to the traditional ones has some advantages, such as high efficiency, safety and low cost.

show abstract

Recognition method of the dual-objective in a linear array CCD-based improved photoelectric measurement system using two lasers with different wavelengths

Cited by 7 publications

References 5 publications

Measurement Method for the Flight Parameters of a Small Flying Object Using a Multi-Dimensional LED Detection Array

Measurement Method for the Flight Parameters of a Small Flying Object Using a Multi-Dimensional LED Detection Array

Calibration method for the measurement accuracy of a photoelectric test system with intersecting detection areas using array optical signal

Accuracy calibration of the multi-light screen measurement system using array optical signal

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