| 抗差估计在自由落体式绝对重力仪中的应用 |
| |
| 引用本文： | 胡明,张为民,杨萌,田蔚,钟敏.抗差估计在自由落体式绝对重力仪中的应用[J].大地测量与地球动力学,2016,36(9):833-836. |
| |
| 作者姓名： | 胡明 张为民 杨萌 田蔚 钟敏 |
| |
| 摘 要： | 针对自由落体式绝对重力仪中的异常数据，提出抗差参数估计的数据处理方法。对比分析传统最小二乘拟合与抗差最小二乘拟合计算的重力值，结果表明,抗差参数估计通过合理调整权重因子抑制了异常数据的影响，提高了重力测量精度。
|
| 关 键 词： | 传统最小二乘估计 抗差参数估计 绝对重力仪 自由落体 |
Robust Trend Estimation and Its Application in the Free Fall Absolute Gravimeter |
| |
| HU Ming,ZHANG Weimin,YANG Meng,TIAN Wei,ZHONG Min.Robust Trend Estimation and Its Application in the Free Fall Absolute Gravimeter[J].Journal of Geodesy and Geodynamics,2016,36(9):833-836. |
| |
| Authors: | HU Ming ZHANG Weimin YANG Meng TIAN Wei ZHONG Min |
| |
| Abstract: | Robust trend estimation is employed for some outliers in the free fall absolute gravimeter. We compare gravity as obtained by ordinary least square estimation and by robust trend estimation. The results show that we can reject outliers by adjusting the weighting factors of the time-distance pairs, thus improving measurement accuracy. |
| |
| Keywords: | ordinary least square estimation robust trend estimation absolute gravimeter free fall |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 |
