Robust Trend Estimation and Its Application in the Free Fall Absolute Gravimeter
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.
Key words :
ordinary least square estimation
robust trend estimation
absolute gravimeter
free fall
Cite this article:
HU Ming,ZHANG Weimin,YANG Meng et al. Robust Trend Estimation and Its Application in the Free Fall Absolute Gravimeter[J]. jgg, 2016, 36(9): 833-836.
HU Ming,ZHANG Weimin,YANG Meng et al. Robust Trend Estimation and Its Application in the Free Fall Absolute Gravimeter[J]. jgg, 2016, 36(9): 833-836.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2016/V36/I9/833
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