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MAO Hong-min, DING Zhi-ya, YANG Yan-yan, JIANG Su-qi, PENG Jian-tao, CAO Nan, HU Li-fa, CAO Zhao-liang. Effect of atmospheric turbulence on imaging quality of high-resolution remote sensing satellites[J]. Chinese Optics. doi: 10.37188/CO.2023-0083

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Effect of atmospheric turbulence on imaging quality of high-resolution remote sensing satellites

doi:10.37188/CO.2023-0083

1.
School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
2.
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, Suzhou 215009, China
3.
School of Science, Jiangnan University, Wuxi 214122, China
4.
Shanghai Institute of Satellite Engineering, China Aerospace Science and Technology Corporation, Shanghai 201109, China

Funds:Supported by Jilin Province Science and Technology Development Plan (No. 20220203033SF)；Jiangsu Key Disciplines of the Fourteenth Five-Year Plan (No. 2021135)；the Industry-University-Institute Cooperation Foundation of Eighth Institute of China Aerospace and Technology (No. SAST2020-025)

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Corresponding author:caozl@usts.edu.cn
Received Date:08 May 2023
Rev Recd Date:17 May 2023

Available Online:22 Sep 2023

Abstract

Abstract

Remote sensing satellites play a crucial role in both national defense and civil exploration. However, the imaging quality of high-resolution remote sensing satellites is significantly affected by atmospheric turbulence. We focus on the impact of camera aperture, satellite orbit altitude and atmospheric turbulence intensity on the imaging quality of space cameras during remote sensing satellite earth detection. Firstly, the turbulence wavefront simulation method based on the spherical wave model and Kolmogorov turbulence theory is analyzed. Subsequently, the disturbed wavefront, impacted by the camera aperture, satellite orbit height and atmospheric turbulence intensity, is analyzed, and a universal formula is derived. In addition, an equation for imaging resolution with camera aperture, satellite orbit height and atmospheric coherence length is developed. Finally, the effect of atmospheric turbulence on the Modulation Transfer Function (MTF) is studied. The variation of the relative error of MTF with camera aperture, satellite orbit height and atmospheric coherence length is simulated and analyzed, with reference to an MTF value of 0.15. This study provides a theoretical basis for designing, analyzing, and assessing high-resolution remote sensing satellites.
- high-resolution satellite,
- atmospheric turbulence,
- space-to-ground detection,
- imaging quality

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References (20)

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