About Vector solution 2 CoP
Celestial navigation. Fix by two circles of position: vector solution. With a sextant take two altitudes, correct them and obtain the observed altitudes: Ho. Take the Nautical Almanac and find the coordinates of the...
Celestial navigation.
Fix by two circles of position: vector solution.
With a sextant take two altitudes, correct them and obtain the observed altitudes: Ho.
Take the Nautical Almanac and find the coordinates of the celestial bodies: GHA, declination.
Use this app to calculate the two solutions, and to plot the circles of position, or circumferences of equal altitude on Google maps.
Running fix:
- The app moves the first sight to the time of the second, taking into account the motion of the observer.
Method explained in the papers:
- Vector Solution for the intersection of two Circles of Equal Altitude. (Andrés Ruiz González. Journal of Navigation 2008, 61:355-365. The Royal Institute of Navigation).
- Use of rotation matrices to plot a circle of equal altitude. (Andrés Ruiz. JOURNAL OF MARITIME RESEARCH, Vol 8, Nº3, 2011)
Available on the author's website.
- Output is copied to clipboard
User interface:
- Zoom buttons +/-
- Map types: normal and satellite
- GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible)
Previous Versions
Here you can find the changelog of Vector solution 2 CoP since it was posted on our website on 2016-12-26 15:44:20.
The latest version is 1.18 and it was updated on 2024-03-29 09:47:18. See below the changes in each version.
Vector solution 2 CoP version 1.18
Updated At: 2023-12-05
Changes: Celestial Navigation - Sight Reduction.
New user interface.
play-services-maps:18.2.0.
OS updated to android API 34.
Vector solution 2 CoP version 1.15
Updated At: 2023-11-07
Changes: Celestial navigation
Sight reduction
OS updated to android API 34
Vector solution 2 CoP version 1.14
Updated At: 2023-08-18
Vector solution 2 CoP version 1.13
Updated At: 2021-05-28
Changes: Plotting method example: 4 Circumferences of Equal Altitude or CoPs
Terrain map
Android 11.0 update
Vector solution 2 CoP version 1.11
Updated At: 2020-04-06
Changes: Plotting method example: 4 Circumferences of Equal Altitude or CoPs
Terrain map
Android 10.0 update
Vector solution 2 CoP version 1.10
Updated At: 2020-02-11
Changes: Plotting method example: 4 CoPs
Terrain map
Android 10.0 update
Vector solution 2 CoP version 1.6
Updated At: 2019-12-14
Changes: Terrain map
Android 10.0 update
Vector solution 2 CoP version 1.5
Updated At: 2019-11-22
Changes: Android 10.0 update
Vector solution 2 CoP version 1.3
Updated At: 2019-07-31
Changes: Updated to android 9.+ API29
More examples: high altitudes
Disclaimer
Official Google Play Link
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