| 航天测量船外测数据的滤波算法 |
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| 引用本文： | 杨磊,吴孟达,张忠华,李晓勇.航天测量船外测数据的滤波算法[J].航天控制,2008,26(6). |
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| 作者姓名： | 杨磊 吴孟达 张忠华 李晓勇 |
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| 作者单位： | 1. 中国卫星海上测控部,江苏江阴,214431
2. 国防科技大学理学院,湖南长沙,410073 |
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| 摘 要： | 航天测量船在航天测控中占有非常重要的地位,为提高航天测量船外测数据的光滑度,在小波滤波和样条函数滤波的基础上,通过建立分解尺度和阈值的选取原则,提出了船载外测数据的滤波算法.该算法在滤波的同时,成功地分离出随机误差和船摇修正残差,显著地改进了现有的船载外测数据修正结果.实例和仿真结果表明这是一种比较理想的船载外测数据滤波算法.
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| 关 键 词： | 小波变换 滤波 航天测量船 |
Data Filtering Algorithm of Real Time Data Measured in Instrumentation Ship |
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| YANG Lei,WU Mengda,ZHANG Zhonghua,LI Xiaoyong.Data Filtering Algorithm of Real Time Data Measured in Instrumentation Ship[J].Aerospace Control,2008,26(6). |
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| Authors: | YANG Lei WU Mengda ZHANG Zhonghua LI Xiaoyong |
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| Institution: | YANG Lei1 WU Mengda2 ZHANG Zhonghua1 LI Xiaoyong11.China Satellite Maritime Tracking , Controlling Department,Jiangsu 214431,China 2.National University of Defense Technology,Changsha 410073,China |
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| Abstract: | The smoothness of the space instrumentation ship-measured data plays a key role in the TT&C processing.Based on wavelet filtering and spline filtering,a novel filtering algorithm is proposed by selecting the proper wavelet base and the optimal threshold.The random error and hull error are successfully separated and modified-ship swaying data is improved.Computational results show that the novel algorithm is a promised filtering method for the space instrumentation ship-measured data. |
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| Keywords: | Wavelet transform Filtering Space instrumentation ship |
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