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silent marshal · 04-06-12, 04:26 AM

ROLLING OF THE BOAT:
The human errors are an important point: they mostly determine the accuracy of our calculated position. I am not sure how to consider the rolling of the boat because in the sextant GUI the left side of the mirror is the "real" background (comparable with the UZO view: up-down-up-down...) but the right side is only a picture which is moved along the vertical axes. I don't know how to deal with this issue. I for myself would be satisfied if it is possible to make the horizont steady, regardless the rolling of the boat.

BACKGROUND OF THE METHOD:
A good source to understand what the "Höhendifferenzmethode" is about: www.kowoma.de/gps/astronav/allg_methode_1.htm (german page). There you can also find some hints about the graphical solution. I will explain some special corrections for use with SH5 later on.

ALMANAC:
The problem with the complete almanac is that you have to consider every minute of a year. This is possible to do but a lot of work. The point is, you have to find your day, the hour and minute and then read the data you need for your calculations. So you have to dial these inputs correctly to avoid false user input (human error). With the dials at the GUI, this human error factor is factored in.
But it's possible to make a complete almanac for the years of war.

FORMULAS:
All values are calculated with formulas (hight of the sun etc.). This is essential to get the azimut (A) and the Radialversatz (u); without them you can't determine your position. Examples of the formulas will follow soon (it's a lot of stuff).

ACTUAL TASK:
At the moment I am working for the method how to factor in the moving of the boat from T=1 (first shot) to T=2 (second shot), which will be used more often. Some more mathematics to do...

PS: I implemented only my sextant-buttons to the GUI of Dr.Jones. Hope it't ok for you, Dr. Jones...

04-06-12, 04:26 AM	#5
silent marshal Watch Join Date: Aug 2008 Location: Vienna - Austria Posts: 25 Downloads: 89 Uploads: 0	ROLLING OF THE BOAT: The human errors are an important point: they mostly determine the accuracy of our calculated position. I am not sure how to consider the rolling of the boat because in the sextant GUI the left side of the mirror is the "real" background (comparable with the UZO view: up-down-up-down...) but the right side is only a picture which is moved along the vertical axes. I don't know how to deal with this issue. I for myself would be satisfied if it is possible to make the horizont steady, regardless the rolling of the boat. BACKGROUND OF THE METHOD: A good source to understand what the "Höhendifferenzmethode" is about: www.kowoma.de/gps/astronav/allg_methode_1.htm (german page). There you can also find some hints about the graphical solution. I will explain some special corrections for use with SH5 later on. ALMANAC: The problem with the complete almanac is that you have to consider every minute of a year. This is possible to do but a lot of work. The point is, you have to find your day, the hour and minute and then read the data you need for your calculations. So you have to dial these inputs correctly to avoid false user input (human error). With the dials at the GUI, this human error factor is factored in. But it's possible to make a complete almanac for the years of war. FORMULAS: All values are calculated with formulas (hight of the sun etc.). This is essential to get the azimut (A) and the Radialversatz (u); without them you can't determine your position. Examples of the formulas will follow soon (it's a lot of stuff). ACTUAL TASK: At the moment I am working for the method how to factor in the moving of the boat from T=1 (first shot) to T=2 (second shot), which will be used more often. Some more mathematics to do... PS: I implemented only my sextant-buttons to the GUI of Dr.Jones. Hope it't ok for you, Dr. Jones...