| CHAMP姿态数据间断的处理方法与精度分析 |
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| 引用本文： | 胡雷鸣,张兴福,沈云中. CHAMP姿态数据间断的处理方法与精度分析[J]. 大地测量与地球动力学, 2006, 26(2): 83-86 |
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| 作者姓名： | 胡雷鸣 张兴福 沈云中 |
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| 作者单位： | 同济大学测量与国土信息工程系,上海,200092;同济大学测量与国土信息工程系,上海,200092;现代工程测量国家测绘局重点实验室,上海,200092 |
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| 摘 要： | 为探究CHAMP加速度计数据的预处理方法,分析了姿态数据间断的各种情况,提出了采用二次插值方法处理姿态数据间断,并用实测的CHAMP加速度计数据进行了验证。统计结果表明采用二次插值方法处理姿态数据间断,精度比线性插值法明显提高,当姿态数据连续间断小于40个历元的情况下,内插姿态数据对加速度的影响小于10-9ms-2,不影响其使用。
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| 关 键 词： | CHAMP 姿态数据 间断 二次插值 精度分析 |
| 文章编号： | 1671-5942(2006)02-0083-04 |
| 修稿时间： | 2005-11-22 |
PROCESSING METHOD OF CHAMP ATTITUDE DATA GAP AND ACCURACY ANALYSIS |
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| Hu Leiming,Zhang Xingfu,Shen Yunzhong. PROCESSING METHOD OF CHAMP ATTITUDE DATA GAP AND ACCURACY ANALYSIS[J]. Journal of Geodesy and Geodynamics, 2006, 26(2): 83-86 |
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| Authors: | Hu Leiming Zhang Xingfu Shen Yunzhong |
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| Abstract: | For searching the preprocessing method of CHAMP accelerometry data,the variation of attitude data gap has been analyzed,then the method of quadratic interpolation was used for processing the attitude data gap. The statistical results from observed CHAMP accelerometry data show that the accuracy by quadratic interpolation is higher than that by linear interpolation; the influences of interpolated attitude data to observed acceleration is less than 10 {-9}ms {-2}, which can satisfy the requirement of accuracy in case of data gap less than 40 epochs. |
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| Keywords: | CHAMP attitude data data gap quadratic interpolation accuracy analysis |
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