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首页> 外文会议>4th ESA International Conference on Spacecraft Guidance, Navigation and Control Systems, 4th, Oct 18-21, 1999, ESTEC, Noordwijk, The Netherlands >IMAGE BASED ATTITUDE DETERMINATION USING AN OPTICAL CORRELATOR
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IMAGE BASED ATTITUDE DETERMINATION USING AN OPTICAL CORRELATOR

机译：使用光学相关器的基于图像的姿态确定

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摘要

The paper discusses a spacecraft attitude determination system based on image data provided by an onboard observation camera. The attitude is measured by the observed image motion which can be registered by an appropriate allocation of additional navigational area sensors in the focal plane of the onboard imaging system. An advantageous feature of this concept is the possibility to use the payload observation camera without changes in the optics as attitude sensor. The real-time image processing is performed by a hybrid opto-electronic system based on a Joint Transform Optical Correlator. With up to-date opto-electronic components the correlator can have a size of 20X40X220 mm, a mass within 0.5 kg and a power consumption less than 5 W. The paper presents a system layout of a laboratory prototype and gives the performance estimations in terms of data processing rate, accuracy, sensitivity to noise and distortions and response time under disturbing conditions.
机译：本文讨论了一种基于机载观测相机提供的图像数据的航天器姿态确定系统。通过观察到的图像运动来测量姿态，该图像运动可以通过在车载成像系统的焦平面中适当分配其他导航区域传感器来记录。该概念的一个有利特征是可以在不改变光学器件的情况下使用有效载荷观察相机作为姿态传感器。实时图像处理由基于联合变换光学相关器的混合光电系统执行。使用最新的光电组件，相关器的尺寸可以为20X40X220 mm，质量在0.5 kg以内，功耗小于5W。本文介绍了实验室原型的系统布局，并提供了性能评估。干扰条件下的数据处理速率，准确性，对噪声和失真的敏感度以及响应时间。

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