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新型导航技术及应用研讨会

作者： Ma Xianglu Qin Shiqiao Wang Xingshu Hu Feng WuWei Zheng JiaXing College of Optoelectronic Science and Engineering National University of Defense Technology Air Force Radar Academy

ship deformation is the main error source of partial reference. Such deformationcan be estimated by laser gyro units and Kalman filter technology. ForKalman filter, deformationwas divide into two parts, dynamic deformation, and static ***, dynamic deformationistreated as AR2 *** this paper,dynamic deformationistaken as a kind of ARX *** on actual data measured by Yuanwang-3 Space Survey ship, simulation experiments are studied. Results show that the novel model can improve the measurement precision.

关键词： inertial navigation ship deformation Kalman filter ARX model

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Hull deformation measurement for spacecraft TT&C ship by Photogrammetry

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Science China(Technological Sciences) 2015年第8期58卷 1339-1347页

作者： LIU HaiBo SUN Cong ZHANG YueQiang LIU XinMing LIU JinBo ZHANG XiaoHu YU QiFeng College of Aerospace Science and Engineering National University of Defense Technology Hunan Provincial Key Laboratory of Image Measurement and Vision Navigation China Satellite Maritime Tracking and Control Department

When voyaging,ships are subject to inevitable hull deformations caused by the changes in the environmental temperature and external *** are a crucial source of errors when measuring data using a spacecraft tracking,telemetry,and control(TT&C) ship.A prototype system based on photogrammetry was developed for the real-time measurement of a spacecraft TT&C ship's hull *** system has high accuracy,a simple structure,and convenient maintenance,and requires few changes to the ship's *** improve its performance,an estimation approach is proposed for hull deformation *** the proposed approach,the central positions of cross spots in successive frames can be predicted based on the prediction of the camera's attitude,and their extract locations can be found by defining a series of small windows around each predictive ***,the optimal estimate of the camera's attitude is updated by the designed extended Kalman filter using the extracted cross spots and their corresponding local coordinates,with which the hull deformation angles can be *** verify the proposed measurement approach,its performance was tested during the normal sailing,floating,and rocking on the sea of a spacecraft TT&C *** experimental testing results demonstrated that the proposed approach performs well in terms of accuracy and *** can satisfy the hull deformation measurement requirement for a spacecraft TT&C ship in real time.

关键词： photogrammetry ship deformation spacecraft TT&C ship EKF

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