| 利用星载相机成像信息进行卫星姿态确定的方法(英文) |
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| 引用本文： | 周凤岐,夏克强,周军.利用星载相机成像信息进行卫星姿态确定的方法(英文)[J].火力与指挥控制,2008,33(12). |
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| 作者姓名： | 周凤岐 夏克强 周军 |
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| 作者单位： | 西北工业大学,陕西,西安,710072 |
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| 基金项目： | 航天支撑基金资助项目
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| 摘 要： | 随着卫星定姿精度要求的日益提高,仅用常规卫星敏感器已经不能满足高精度定姿要求,针对该问题,提出一种利用星载相机的单点成像信息进行卫星姿态确定的算法,根据相机成像原理推导出卫星姿态角与像点位置的关系,结合数字相机的特殊成像方式,建立了用误差四元数描述的线性相机测量残差模型,并给出联合常规姿态敏感器进行联合姿态确定的方案.仿真结果证明星载相机的信息的引入使得稳态姿态估计精度由0.002 6°提高到0.000 69°,并且加快了滤波收敛速度.
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| 关 键 词： | 星载相机 卡尔曼滤波 姿态确定 误差四元数 |
A New Method for Satellite Attitude Determination Using Information of Space Camera |
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| ZHOU Feng-qi,XIA Ke-qiang,ZHOU Jun.A New Method for Satellite Attitude Determination Using Information of Space Camera[J].Fire Control & Command Control,2008,33(12). |
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| Authors: | ZHOU Feng-qi XIA Ke-qiang ZHOU Jun |
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| Institution: | ZHOU Feng-qi,XIA Ke-qiang,ZHOU Jun (Northwestern Polytechnical University,Xi\'an 710072,China) |
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| Abstract: | With the development of satellite application,more and more accurate satellite attitude estimation are required,and it's very hard to satisfy the requirement using the normal attitude sensors.A new algorithm was put forward to improve the attitude estimation accuracy by employing the single image spot information of space camera.The relationship of attitude angle and position of image spot was derived from imaging principle.According to the digital imaging character,the measurement residual model of space c... |
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| Keywords: | space camera kalman filter attitude determination error quaternion |
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