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首页> 外文会议>Annual AAS (American Astronautical Society) Rocky Mountain Guidance and Control Conference Feb 5-9, 2003 Breckenridge, Colorado, U.S.A. >MICRO- TECH.- SENSOR FOR ATTITUDE AND ORBIT DETERMINATION
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MICRO- TECH.- SENSOR FOR ATTITUDE AND ORBIT DETERMINATION

机译：MICRO-TECH。-姿态和轨道确定传感器

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摘要

A sensor for autonomous attitude and orbit determination of satellites, based on active pixel technology, is proposed. The system is characterized by a beam splitter, which provides two non-collinear lines-of-sight and attenuation of the Earth's magnitude. Hereby images of a star field, perpendicular to the Earth vector, and the Earth are projected on a single focal plane. The paper is concerned with extensive functional tests and an initial evaluation of performance based on various algorithms. Results from three levels of functional tests will be presented: 1. Laboratory tests, 2. Field tests, in the Bavarian Alps, 3. In- Orbit tests, on MITA, an Italian small satellite platform in circular orbit, altitude 450 km, inclination 87,3 deg. A laboratory test facility was used to test the algorithm and get a grasp on the system's peculiarities and potentials. It consists of an opto- electronic star simulator and an active pixel camera to provide star images. The field tests were performed to test the algorithm's behavior in a heavily disturbed environment, and to provide realistic spatially distributed star images. The In- Orbit tests were performed to prove the system's functionality in space. All experiments were successful and confirmed the feasibility of the proposed system: 1. The laboratory tests showed the system's integrity, 2. The field experiment verified the assumptions and expectations with regard to the camera system, the performance of the breadboard and the correct implementation of the laboratory set- up, 3. The In- Orbit experiment proved, that it is possible to observe stars and the Earth on a single focal plane. The experiments in their union served as a vast source of ideas on future developments and as a warning of possible traps, when using a purely optical system for attitude and orbit determination.
机译：提出了一种基于主动像素技术的卫星自主姿态和轨道确定传感器。该系统的特征在于分束器，该分束器提供两条非共线的视线，并衰减了地球的大小。因此，垂直于地球矢量的星场和地球的图像投影在单个焦平面上。本文涉及广泛的功能测试以及基于各种算法的性能初步评估。将提供三个功能测试级别的结果：1.实验室测试； 2.在巴伐利亚阿尔卑斯山的现场测试； 3.在MITA上进行的在轨测试，MITA是意大利圆形轨道上的小型卫星平台，海拔450公里，倾斜度87.3度使用实验室测试工具来测试算法，并掌握系统的特殊性和潜力。它由一个光电星型模拟器和一个有源像素摄像机组成，以提供星型图像。进行了现场测试，以测试算法在严重干扰的环境中的行为，并提供逼真的空间分布的恒星图像。进行了在轨测试以证明系统在太空中的功能。所有实验均获得成功，并证实了所提出系统的可行性：1.实验室测试表明了系统的完整性； 2.现场实验验证了有关摄像头系统，面包板性能以及正确实施该系统的假设和期望。在实验室中进行设置。3.在轨实验证明，可以在一个焦平面上观测恒星和地球。当使用纯光学系统确定姿态和轨道时，这些实验共同为未来的发展提供了广阔的思路，并警告了可能存在的陷阱。

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