Integrated Analysis and Experiment on Thermal Stability of Spaceborne Cameras’ Internal Orientation Elements

Table 1. Displacement of optical component
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Table 1. Displacement of optical component
Direction Primary mirror Secondary mirror Focal plane
x 3.935×10^-7 -1.310×10^-5 -4.439×10^-6
y 1.092×10^-3 1.046×10^-3 1.478×10^-3
z -3.332×10^-3 -8.915×10^-3 1.829×10^-3

Table 2. Tilt of optical component
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Table 2. Tilt of optical component
Direction Primary mirror Secondary mirror Focal plane
x 5.185×10^-6 5.952×10^-8 1.491×10^-5
y 4.771×10^-7 -1.840×10^-7 5.113×10^-8
z 5.153×10^-10 2.485×10^-8 -7.040×10^-9

Table 3. Simulation results of change in internal orientation element
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Table 3. Simulation results of change in internal orientation element
Direciton x y
Displacements /pixel 0.025 0.275

Table 4. Results of internal orientation calibration
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Table 4. Results of internal orientation calibration
Temperature /℃ x direction y direction
20 5.804 -13.797
23 5.792 -13.553
26 5.618 -13.710

Table 5. Results of the change of internal orientation
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Table 5. Results of the change of internal orientation
Temperature change /℃ x direction y direction
20→23 0.012 0.244
23→26 0.174 0.157
Average value 0.093 0.201

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Zhipeng Xue, Jinquan Liu, Lei Zhang, Shanshan Cong, Chang Liu, Jianing Wang, Shunfa Chen. Integrated Analysis and Experiment on Thermal Stability of Spaceborne Cameras’ Internal Orientation Elements[J]. Acta Optica Sinica, 2024, 44(18): 1828005

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