4 0 0 0 OA 地図投影法の定義と「投影」概念
- 著者
- 政春 尋志
- 出版者
- Japan Cartographers Association
- 雑誌
- 地図 (ISSN:00094897)
- 巻号頁・発行日
- vol.45, no.3, pp.1-15, 2007-09-30 (Released:2011-07-19)
- 参考文献数
- 41
- 被引用文献数
- 1
1 0 0 0 OA 赤道からある緯度までの子午線長を計算する3つの計算式の比較
- 著者
- 飛田 幹男 河瀬 和重 政春 尋志
- 出版者
- 日本測地学会
- 雑誌
- 測地学会誌 (ISSN:00380830)
- 巻号頁・発行日
- vol.55, no.3, pp.315-324, 2009 (Released:2012-03-28)
- 参考文献数
- 10
Three equations for meridional distance from the equator are compared. Accuracies, advantages and disadvantages are discussed. Conventional equation with higher terms has enough accuracy and slow convergence. Bessel’s simple equation is very easy for computer programming and has the fastest convergence and the fastest calculation speed. An analytic equation derived from elliptic integrals is easy for programming and has fast convergence and the highest accuracy.