High-Precision Pointing and Tracking System Design for Near-Space Balloon-Based Optical Observation
Applied SciencesNear-space high-altitude balloon-based platforms have a series of advantages and provide superior conditions for optical observation. In order to ensure the stability of the optical axis of the optical detection load and stable tracking of the target, a ...
Lulu Qian +8 more
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A Correction Method of Estimating the Pointing Error for Reflector Antenna
Shock and Vibration, 2018 The pointing error caused by the structural deformation of large reflector antennas has become the most challenging problem of antenna servo control. Especially with the increase of the antenna diameter and the working frequency, environmental loads not ...
Jie Zhang +6 more
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Precision Pointing Control System (PPCS) system design and analysis [PDF]
The precision pointing control system (PPCS) is an integrated system for precision attitude determination and orientation of gimbaled experiment platforms.
Eisenhut, D. F. +9 more
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A Digital Twin Model for Optical Telescope Pointing Systems
IEEE Photonics JournalPointing accuracy, as one of the important indexes to measure the performance of optical tele-scope products, is directly related to the observation quality and efficiency of the telescope, but affected by a variety of complex factors, the timeliness ...
Zhenghao Li, Yahui Zhang, Yan He
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Calibration of Viking imaging system pointing, image extraction, and optical navigation measure [PDF]
Pointing control and knowledge accuracy of Viking Orbiter science instruments is controlled by the scan platform. Calibration of the scan platform and the imaging system was accomplished through mathematical models.
Breckenridge, W. G. +2 more
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Development of the elevation drive assembly for orbiting solar observatory I (EYE) [PDF]
The requirements for pointing accuracy, friction, and power for the elevation drive assembly of an orbiting space observatory are discussed briefly. A description of the components making up the assembly is presented.
Olson, M. C., Sharpe, W. F., Ward, B. W.
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Antenna pointing compensation based on precision optical measurement techniques [PDF]
The pointing control loops of the Deep Space Network 70 meter antennas extend only to the Intermediate Reference Structure (IRS). Thus, distortion of the structure forward of the IRS due to unpredictable environmental loads can result in uncompensated ...
Schumacher, L. L., Vivian, H. C.
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MachinesRobotic Total Stations (RTS) are fully automated theodolites with electronic distance measurement (EDM) that include a number of additional tools (e.g., camera, laser rangefinder, onboard computer, and tracking software, etc.) enabling them to work ...
Henrique Simas +3 more
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Goddard Space Flight Center (GSFC) Flight Dynamics Facility (FDF) calibration of the Upper Atmosphere Research Satellite (UARS) sensors [PDF]
Flight Dynamics Facility (FDF) responsibilities for calibration of Upper Atmosphere Research Satellite (UARS) sensors included alignment calibration of the fixed-head star trackers (FHST's) and the fine Sun sensor (FSS), determination of misalignments ...
Garrick, J., Hashmall, J.
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On Estimation Accuracy of Points Displacement
Acta Montanistica Slovaca, 2009 In the paper the estimates of position accuracy are given which are based on consistent and subsequent use of the true and meansquare errors propagation laws. Firstly the covariance matrices MU of the simple functions FX , FY, FZ of measured quantities L i, e.g.of the coordinates X, Y, Z of determined points U, are computed for each of the two ...
openaire +1 more source