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Navigation

Celestial Navigation Basics – Hc Calculated Altitude

In this post we will look at how to determine Hc the calculated altitude and compare this to Ho the observed altitude. The difference between Ho and Hc is the intercept and is used in the Marc Saint Hilaire method for solving position. In previous posts we found Hs (Ref.3), Ha (Ref.4) and Ho (Ref.5). […]

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Navigation

Celestial Navigation Basics – Ho Observed Altitude

In this post we will look at how to reduce a sextant apparent altitude Ha to an observed altitude Ho. In the following post, we will look at how to calculate Hc. Ho will then be compared with Hc to determine an intercept. The complete details are contained in Ref.1. Complete Sight Reduction procedures are […]

Categories
Navigation

Celestial Navigation Basics – Ha Apparent Altitude

In this post we will look at how to reduce a sextant altitude Hs to an apparent altitude Ha. In the following post, we will look at how to reduce Ha to Ho. Ho will then be compared with Hc to determine an intercept. The complete details are contained in Ref.1. Complete Sight Reduction procedures […]

Categories
Navigation

Celestial Navigation Basics – Hs Sextant Altitude

In this post we will look at how to take a sextant altitude Hs. In the following post, we will look at how to reduce Hs to Ha and then to Ho. Ho will then be compared with Hc to determine an intercept. The complete details are contained in Ref.1. Complete Sight Reduction procedures are […]

Categories
Navigation Telecommunications

Scilab & ScicosLab – Scicos Visual Blocks

Scilab and ScicosLab are Open Source Math Programs that can be used in various engineering and scientific applications. I use ScicosLab with the Modnum tool box in all my Telecommunications work, but both Scilab/ScicosLab can be used for all the mathematics involved in my CelNav EBook. In a previous post (Ref.1) I introduced the programs […]