Acta Photonica Sinica, Volume. 52, Issue 2, 0211001(2023)
Analysis of Detection Capability of Space Target Based on Event Camera
Figures & Tables(12)
Fig. 2. Relationship between the signal-to-noise ratio threshold and the limit magnitude of traditional detectors
Fig. 4. Relationship between system parameters and detection limit magnitude
Fig. 5. Relationship between threshold and detection limit magnitude
Table 1. Factors affecting the detection sensitivity of event cameras in space
View tableView in ArticleTable 1. Factors affecting the detection sensitivity of event cameras in space
Symbol Meaning Typical value Atmospheric transmittance 0.4 Clear aperture 0.2 m Transmissivity of optical system 0.7 α Obstruction ratio 0.31 Pixel size 9.8 μm Diffuse spot diameter 1.8 a
Table 2. Calibration data
View tableView in ArticleTable 2. Calibration data
Name Magnitude Threshold Arcturus -0.05 280 α Lyrae 0.03 277 Altair 0.76 273 Spica 0.98 270 Alcor 2.23 264
Table 3. Validation experiment
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Name Magnitude Theoretical threshold Threshold Relative error Polaris 1.97 264.69 265 0.12% Antares 1.06 270.97 269 0.73% η UMa 1.85 265.52 267 0.56% ε UMa 1.76 266.14 260 2.31%
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Yuanyuan LV, Zhaohui LIU, Wenlong QIAO, Liang ZHOU, Xiaoxiao SUN, Peiquan CHEN, Wenkai LI, Haiyang ZHANG. Analysis of Detection Capability of Space Target Based on Event Camera[J]. Acta Photonica Sinica, 2023, 52(2): 0211001
Paper Information
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Received: Aug. 3, 2022
Accepted: Sep. 22, 2022
Published Online: Mar. 28, 2023
The Author Email: ZHOU Liang (zhouliang@opt.ac.cn)
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