Spot Invalid Point Repair Algorithm of Detector Array Measurement System Based on Image Correlation Coefficient

The detector array method has been widely used in the field of high-energy laser far-field spot parameter measurement due to its ability to directly measure the far-field spot of high-energy lasers, wide dynamic range of the detectors, high system sampling frequency, good real-time performance, and...

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Bibliographic Details
Published in:Photonics 2023-10, Vol.10 (10), p.1105
Main Authors: Cheng, Yilun, Wang, Gangyu, Tan, Fengfu, He, Feng, Qin, Laian, Huang, Zhigang, Hou, Zaihong
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Arrays
Correlation coefficient
Correlation coefficients
detector array method
Detectors
Far fields
Image acquisition
image correlation coefficient
Irradiation
Laser damage
Lasers
Maintenance and repair
Parameters
Performance evaluation
Radiation damage
Sampling
Sensors
spot invalid point
spot parameter
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Summary:The detector array method has been widely used in the field of high-energy laser far-field spot parameter measurement due to its ability to directly measure the far-field spot of high-energy lasers, wide dynamic range of the detectors, high system sampling frequency, good real-time performance, and suitability for various testing environment requirements. However, during the measurement process, the irradiation of strong lasers or damage to other hardware systems can result in invalid points in the acquired spot images, thereby reducing the measurement accuracy of the system. In order to achieve accurate measurement of laser far-field spot parameters, this paper establishes an experimental model based on the analysis of the sampling spacing of the detector array target and proposes a laser far-field spot invalid point repair algorithm based on image correlation coefficient. Experimental results demonstrate that the algorithm proposed in this paper effectively reduces the impact of invalid points in the measurement system on the measurement accuracy, and achieves accurate measurement of high-energy laser measurement systems.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics10101105