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Open AccessArticle
Thermal Deformation Measurement of the Surface Shape of a Satellite Antenna Using High-Accuracy Close-Range Photogrammetry
by
Kaifeng Ma
Kaifeng Ma *,
Guiping Huang
Guiping Huang and
Junzhen Meng
Junzhen Meng
College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(14), 4722; https://doi.org/10.3390/s24144722 (registering DOI)
Submission received: 24 June 2024
/
Revised: 17 July 2024
/
Accepted: 19 July 2024
/
Published: 20 July 2024
Abstract
To determine both the size of a satellite antenna and the thermal deformation of its surface shape, a novel high-accuracy close-range photogrammetric technique is used in this study. The method is also applied to assess the performance of the antenna in orbit. The measurement principle and solution method of close-range photogrammetry were thoroughly investigated, and a detailed measurement test scheme was developed. A thermal deformation measurement of the surface shape of a satellite antenna was then carried out. The results show that the measurement error using close-range photogrammetry was smaller than 0.04 mm, which meets the accuracy requirement. Thanks to the high accuracy, it was discovered that both the surface shape and the rib precision of the satellite antenna deteriorate with decreasing temperature. The accuracy of the surface shape and ribs was lowest when the temperature node was −60 °C. The maximum root mean square errors (RMSEs) reached 0.878 mm and 0.761 mm, respectively. This indicates that the surface shape deformation error of the antenna caused by high and low temperatures is relatively high. However, the requirement for the technical design index (RMSE ≤ 1 mm for the surface shape accuracy of the antenna) is still met. Furthermore, for temperature differences of 40 °C and 80 °C, the measured RMSEs for the surface shape deformation were 0.216 mm and 0.411 mm, respectively. Overall, the technical design indicators (RMSE ≤ 0.3 mm and RMSE ≤ 0.5 mm, respectively) for the surface shape deformation of the antennas are met.
Share and Cite
MDPI and ACS Style
Ma, K.; Huang, G.; Meng, J.
Thermal Deformation Measurement of the Surface Shape of a Satellite Antenna Using High-Accuracy Close-Range Photogrammetry. Sensors 2024, 24, 4722.
https://doi.org/10.3390/s24144722
AMA Style
Ma K, Huang G, Meng J.
Thermal Deformation Measurement of the Surface Shape of a Satellite Antenna Using High-Accuracy Close-Range Photogrammetry. Sensors. 2024; 24(14):4722.
https://doi.org/10.3390/s24144722
Chicago/Turabian Style
Ma, Kaifeng, Guiping Huang, and Junzhen Meng.
2024. "Thermal Deformation Measurement of the Surface Shape of a Satellite Antenna Using High-Accuracy Close-Range Photogrammetry" Sensors 24, no. 14: 4722.
https://doi.org/10.3390/s24144722
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