Range prediction, fast fire solution.

[NavyUSA]

Originally Posted by Pisces

Can you explain the rational behind those standard deviation numbers? What sort of probability is that? Also how do you get from probability percentages to standard deviations and back in the first place. (I like math, but I suck at statistics, so it's still magic to me)

Speak about the statistical theory in this forum is off-topic. In literature you can find the whole theory.

You know that the bearing rate has a very good correlation with the distance of the contact. It's inversely proportional to the range. These tables are born, from a statistical analysis of Bearing rate variation, by varying the range, route target and relative bearing.

Originally Posted by Pisces

While my Italian is even worse than my 'statistic', it would have been nice if you could have provided a link to that forum. Maybe it is public enough to get a peek inside on that method. And let Google Translator have a go at it. Could be fun.

If Cristian from Betasom, wants personally explain in English this method, would be better. But I think it's very clear. The link below:
http://www.betasom.it/forum/index.php?showtopic=33792
The direct link is this: http://goo.gl/S7iAUy
Page 24.

Originally Posted by Pisces

Still, only with relative target bearing between 75 and 85, and speeds between 6 and 7 , or target needing to be between 5 and 7, seems to be quite limiting in use to me. Such narrow bounds.

For all relative target bearings between 20 and 160 there is a table. I can send you all tables on your e-mail address.
About it, I think that speeds between 5 and 7 knots are not very restrictive, for several reasons.