Optimization design of scroll and pitch and their control errors on aerocraft

YAN De-Jie

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Optimization design of scroll and pitch and their control errors on aerocraft

Article | 更新时间：2020-08-12

- Optimization design of scroll and pitch and their control errors on aerocraft
- Optics and Precision Engineering Vol. 17, Issue 9, Pages: 2224-2229(2009)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：02 March 2009，
  
  Revised：23 April 2009，
  
  Published Online：25 September 2009，
  
  Published：25 September 2009
- 稿件说明：
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闫得杰. 飞行器侧摆和前后摆对空间相机成像质量的影响[J]. 光学精密工程, 2009,17(9):2224-2229

YAN De-Jie. Optimization design of scroll and pitch and their control errors on aerocraft[J]. Optics and precision engineering, 2009, 17(9): 2224-2229.
闫得杰. 飞行器侧摆和前后摆对空间相机成像质量的影响[J]. 光学精密工程, 2009,17(9):2224-2229 DOI：

YAN De-Jie. Optimization design of scroll and pitch and their control errors on aerocraft[J]. Optics and precision engineering, 2009, 17(9): 2224-2229. DOI：

摘要

通过分析飞行器侧摆和前后摆对成像质量的影响，提出了空间相机对飞行器侧摆角和前后摆角范围的要求以获取高信噪比和高分辨力的图像。根据空间相机像移产生的机理，给出了侧摆和前后摆情况下像移计算参数的公式，及侧摆角和前后摆角引起的像移。使用调制传递函数作为图像质量的评价依据，确定了满足空间相机成像质量要求的侧摆角和前后摆角范围。分析了侧摆和前后摆对地面像元分辨力的影响。通过计算得出，满足积分级数为96级，调制传递函数不小于0.95的要求，当相机成像时侧摆角和前后摆角的控制误差为0.1°，侧摆角和前后摆角应不大于4.8°；或当侧摆角和前后摆角的控制误差为0.05°，侧摆角和前后摆角应不大于9.5°。实验结果表明，本文提出的方法简单，易于实现，适用于空间相机成像质量的研究。

Abstract

In order to obtain high signal noise ratio and high resolution image

the requirements for the scope of scroll angle and pitch angle is put forward by analyzing the influence of aircraft scroll and pitch movement on image quality. According to the mechanism of camera image motion

the formula for calculating the image motion which caused by scroll and pitch of aerocraft and the image motion are given. The image quality is evaluated by way of the Modulation Transform Function（MTF）

and the scopes of scroll angle and pitch angle that can meet the requirements of the space camera image quality are computed. Furthermore

the influence of scroll angle and pitch angle on ground pixel resolution is analyzed. From calculations

the following conclusions are derived. When the control error of scroll angle and pitch angle is 0.1° during the imaging

the angle of axis of sight caused by scroll angle and pitch angle is not greater than 4.8°; or when the control error of scroll angle and pitch angle is 0.05° during the imaging

the angle of axis of sight caused by scroll angle and pitch angle is not greater than 9.5°

which can meet the requirements of the integration progression is 96 and MTF is not less than 0.95. The experimental results indicate that the method proposed is simple and easy to implement

which is suitable for the research on image quality of space camera.

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