價格：免費
更新日期：2017-01-16
檔案大小：2.3M
目前版本：2.9
版本需求：Android 4.0 以上版本
官方網站：http://sites.google.com/site/navigationalalgorithms/
Email：navigationalalgorithms@gmail.com
聯絡地址：Navigational Algorithms navigationalalgorithms@gmail.com San Sebastian Gipuzkoa Spain
Celestial navigation - Astronavigation
Sight reduction:
- Marcq Saint Hilaire Line of Position, intercept method (p=Ho-Hc, Zn)
- Observed altitude Ho by nautical almanac data
- Local hour angle (LHA)
- Plot of the LoP on Google maps
Sight reduction is the process of deriving from a sight the information needed for establishing a line of position.
This app is a calculator to get the intercept from the assumed position of the observer AP(latitude, longitude), the geographical position of the celestial body observed, GP(Dec, GHA), and its corrected altitude Ho.
Manual and examples in the developer's website.
Ref: https://en.wikipedia.org/wiki/Sight_reduction
