Acta Photonica Sinica, Volume. 51, Issue 6, 0612002(2022)
Rapid Inspection Method and Accuracy Analysis of Large Antenna Panel Deformation
Figures & Tables(14)
Fig. 5. Wuqing 70 m antenna panel deformation monitoring schematic
Table 1. Deviation analysis of multiple measurements of horizontal panels
View tableView in ArticleTable 1. Deviation analysis of multiple measurements of horizontal panels
d/m Maximum/mm Minimum/mm Average value Standard deviation/mm 10 1.12 0 0.08 0.18 20 2.66 0 0.03 0.22 30 1.15 0 0.01 0.27
Table 2. Analysis of measurement error of target ball position at different distances
View tableView in ArticleTable 2. Analysis of measurement error of target ball position at different distances
X coordinate standard deviation/mm Y coordinate standard deviation/mm Z coordinate standard deviation/mm Distance standard
Deviation/mm
Target ball 1 0.16 0.16 0.12 0.18 Target ball 2 0.20 0.15 0.15 0.13 Target ball 3 0.20 0.15 0.15 0.13 Target ball 4 0.24 0.23 0.13 0.11 Target ball 5 0.25 0.27 0.49 0.18 Target ball 6 0.57 0.34 0.88 0.21
Table 3. Target ball relative distance measurement error analysis
View tableView in ArticleTable 3. Target ball relative distance measurement error analysis
Distance between target balls Maximum value/mm Minimum value/mm Average value/mm Standard deviation 1 and 2 1.64 0.94 1.34 0.25 3 and 4 0.93 -0.57 4.3×10-4 0.50 5 and 6 0.96 -0.74 -1.4×10-4 0.54
Table 4. Comparison of measurement efficiency of various antenna panel deformation measurement methods
View tableView in ArticleTable 4. Comparison of measurement efficiency of various antenna panel deformation measurement methods
Measurement method Measurement accuracy and efficiency Longitudinal method Antenna area 600 m2，acquisition time 4 hours，measurement efficiency is 40.00 min/100 m2，accuracy 0.5 mm ［ 3 ］Photogrammetric measurements Miyu 50 m antenna，1 960 m2，1 hour date acquisition，9 hours processing，measurement efficiency 30.61 minutes/100 m2，accuracy 0.4 mm［ 5 ］Radio holography 13.7 m antenna，147 m2 area，2.5 hours date acquisition，acquisition efficiency 102.04 min/100 m2，accuracy 0.16 mm［ 5 ］3D laser scanner method 70 m antenna，3 840 m2 area，1 hour of date acquisition and processing，measurement efficiency 1.56 min/100 m2，accuracy better than 0.3 mm.
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Lianbo FU, Jianjun LIU, Xin REN, Wei YAN, Deqing KONG, Wangli CHEN, Hai HUANG, Xingye GAO. Rapid Inspection Method and Accuracy Analysis of Large Antenna Panel Deformation[J]. Acta Photonica Sinica, 2022, 51(6): 0612002
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Dec. 14, 2021
Accepted: Mar. 3, 2022
Published Online: Sep. 23, 2022
The Author Email: LIU Jianjun (liujj@nao.cas.cn)
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