Abstract
Imaging distortion of optical sensors caused by the aero-optical effects seriously interferes with the navigation accuracy during atmospheric flight of hypersonic vehicles with autonomous celestial navigation. To address this problem,we propose a method to explore the time-varying error of the aero-optical effect at the level of micro-energy change mechanism. This method analyzes the interaction mechanism between photons and turbulent molecules based on the photon transport theory,establishes the photon transport model in the high-speed flow field,and calculates the energy distribution of photons in the turbulent transport process. By establishing the aero-optical effect evaluation function in the micro-photon system,we obtain the time-varying error description of the aero-optical effect,unify the relationship between the micro-energy analysis and the macro-geometric optics,and carry out comparative verification through numerical simulation analysis and wind tunnel test results,thereby providing a new perspective for the research on the aero-optical effect of hypersonic vehicles.
| Translated title of the contribution | Micro-energy analysis method for time-varying error of aero-optical effects |
|---|---|
| Original language | Chinese (Traditional) |
| Article number | 128703 |
| Journal | Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica |
| Volume | 45 |
| Issue number | 4 |
| DOIs | |
| State | Published - 25 Feb 2024 |
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