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This study validates a simulation method for analyzing microvibration effects on optical satellites using high-precision sensors. The approach accurately predicts pixel offset, improving jitter measurement efficiency.

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Area of Science:

  • Optical Engineering
  • Mechanical Engineering
  • Aerospace Engineering

Background:

  • Microvibrations pose a significant challenge to the performance of optical satellites.
  • Accurate quantification of microvibration effects is crucial for mission success.

Purpose of the Study:

  • To develop and validate a combined simulation and experimental method for assessing microvibration impacts on optical satellite systems.
  • To establish an efficient experimental scheme for microvibration measurements.

Main Methods:

  • Utilized a finite element model of the optical satellite incorporating flywheel perturbation data.
  • Employed high-precision acceleration sensors and a six-component test bench.
  • Calculated pixel offset using optical amplification factors derived from a linear optical model.
  • Validated simulation results with a newly developed microvibration measurement experimental system.

Main Results:

  • The simulation method accurately predicted the pixel offset of the optical system.
  • Experimental validation confirmed the effectiveness of the simulation scheme.
  • The study demonstrated that mechanical simulators can effectively represent a whole optical camera for experiments.

Conclusions:

  • The combined simulation and experimental approach is effective for analyzing microvibration effects on optical satellites.
  • The proposed method enhances the efficiency of jitter measurements in optical systems.
  • This technique offers a viable alternative for verifying microvibration impacts, particularly on camera components.