Real navigation target motion analysis cheatsheet

[palmic]

Originally Posted by WildBlueYonder

Thanks for the explanation, I'm working on a mathematical proof to see if this is always applicable, it should though!

I still have a few questions if you don't mind:
1) What is distance float? And the "Get spiess line distance" part allows us to calculate how many meters the contact has moved during the measurements? So that dividing by time we get speed?
2) What does the "Target distance float" part accomplish?
3) Are A and B input variables or things which need to be calculated? I'm a bit confused. Yes, I know how to apply Carnot's theorem or the sine one, it's just that I don't understand what A and B refer to, I've read it to no avail.

With "distance float" i mean distance you float from position of first 3 bearings to new position to get 4th. bearing from there.
Relatively distance target float is the same in relevance to target.

The other quetstions are pure simple trigonometry, just draw the bearings, target course and even your course to new position to map, 4th. bearing from there and try to understand what side or angle of triangle you need to solve.

The law of sine is ultimate solution for every sides and angles in that triangles..

[WildBlueYonder]

Originally Posted by palmic

With "distance float" i mean distance you float from position of first 3 bearings to new position to get 4th. bearing from there.
Relatively distance target float is the same in relevance to target.

The other quetstions are pure simple trigonometry, just draw the bearings, target course and even your course to new position to map, 4th. bearing from there and try to understand what side or angle of triangle you need to solve.

The law of sine is ultimate solution for every sides and angles in that triangles..

So after I calculate the 4 bearings, I have do draw them on the map? Yes, I know how to solve it, but my question is, to get angle A and B, do I get them from the map or calculate them with a formula?