このアイテムのアクセス数: 19

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
s40623-015-0306-z.pdf984.5 kBAdobe PDF見る/開く
タイトル: Recovery of orthometric heights from ellipsoidal heights using offsets method over Japan
著者: Odera, Patroba Achola
Fukuda, Yoichi  kyouindb  KAKEN_id
著者名の別形: 福田, 洋一
キーワード: Ellipsoidal height
Geoid model
Kriging
Least squares collocation
Offsets method
Orthometric height
Planar fitting
発行日: 21-Aug-2015
出版者: SpringerOpen
誌名: Earth, Planets and Space
巻: 67
論文番号: 134
抄録: One of the most important applications of a geoid model is a recovery of orthometric heights from ellipsoidal heights (normally obtained from GNSS). The application of the geoid model for recovering orthometric heights from ellipsoidal heights is normally achieved by fitting the geoid model to a local vertical datum. The fitting procedure is usually accomplished by least squares collocation (LSC), using planar or spherical covariance functions. This procedure warps the gravimetric geoid model onto the local vertical datum, hence the local geoid model derived by this procedure, though convenient for local applications, it is not an equipotential surface. We propose offsets method for practical orthometric height recovery from a geoid model. The proposed procedure is more realistic because it does not constrain the local geoid to be coincident to the local vertical datum. We compare the performance of plannar fitting and offsets methods over Japan using a cross-validation procedure. Results show that offsets method performs better than the normally used planar fitting in the recovery of orthometric heights from ellipsoidal heights using a geoid model. The standard deviations of the differences between established and converted orthometric heights at randomly selected GPS/levelling test points over Japan are ±4 and ±3 cm for planar fitting and offsets methods, respectively. The offsets method is therefore more appropriate for converting ellipsoidal heights to orthometric heights than the planar fitting in the area of study.
著作権等: © 2015 Odera and Fukuda. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
URI: http://hdl.handle.net/2433/212450
DOI(出版社版): 10.1186/s40623-015-0306-z
出現コレクション:学術雑誌掲載論文等

アイテムの詳細レコードを表示する

Export to RefWorks


出力フォーマット 


このリポジトリに保管されているアイテムはすべて著作権により保護されています。