View source for Talk:Apocrypha Exploration

Question is this statement in the test correct

"This means that if the probe is set to scan 256AU, and you read that the site is at a distance of 5 [[AU|AU]] from the probe, the site could be anywhere between 0 to 133AU from the probe. " 

Shouldn't it read between "0 to 5 AU from the probe", is not that the reason for the bubble showing you roughly where and at what range to look

--[[Contributor name:Morscerta|Morscerta]] 13:39, 8 March 2009 (UTC)

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Answer: The deviation of the probe will be somewhere between half it's current scanning radius and a quarter of of the same.  In the example we assume the extreme case thus if the probe was set to 256 AU, the maximum deviation would be +- 128 AU.  If the result was reported at 5 AU from your ship, then taking into account the deviation, the site could appear anywhere from 5+128 AU to 5-128 AU from your ship.  Since negative distance in this case is just positive distance in the opposite direction, we can ignore it and say that the site will be anywhere from 0 AU to 133 AU from your ship with full confidence.
-Mara Saotome / Nerad Tendo

== Quadrangulation does not exist ==

First of all, let me tell you that this guide is excellent and congratulations to the people that made it.

However, please don't use the Quadrangulation term, its very incorrect and in the context that its used does not even exist.
Most people assume that Triangulation is a way to get a result using 3 points, that is totally incorrect. Triangulation is called triangulation not because of the word three, but because it uses TRIANGULES! Triangulation is a method of finding a third point using 2 known points and drawing triangles and then using normal geometry calculations to pinpoint the target. 

I repeat, Triangulation is named that way because it uses TRIANGLES, not because it uses Three points.

The method EVE uses is very close (if not identical) to what is called as GPS Triangulation and Doppler triangulation, and here triangulation no longer mean its normal (or mathematical term), but since in fact the problem can still be resolved by Triangles its not that incorrect say Triangulation when referring to GPS location. 

Language has adopted to use of the term triangulation has the method to pinpoint a target having x number of bases and not necessary using triangles. Therefore we now have Triangulation has the mathematical term to locate a target using triangles, and Triangulation has a vulgar term to locate a point in a variety of ways.

In this text Quadrangulation should be replaced by Triangulation since the meaning wanted is the vulgar one and not the mathematical one.

Vena

p.s. some resources...

''"...triangulation is the process of determining the location of a point by measuring angles to it from known points at either end of a fixed baseline, rather than measuring distances to the point directly. The point can then be fixed as the third point of a triangle with one known side and two known angles."'' 
in Wiki[http://en.wikipedia.org/wiki/Triangulation]
and also in Britannica[http://www.britannica.com/EBchecked/topic/604642/triangulation]


"How does GPS "triangulation" work?"
in GPS Works[http://www.how-gps-works.com/faq/q0110.shtml]

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I appreciate your feedback; I really do.  And holding a B.S. degree in Physics, I assure you I do understand the details.  Another thing I understand, however, is ergonomics (my clients will argue that point XD) and the simple fact is, if you say triangulate, people think of the number 3 and if you say quadrangulate, people think of the number 4.  Since a minimum of 4 probes are necessary to find the site, it helps people to think in terms of 4 not 3.

Truth be completely told, An Anarchyyt pointed out quite correctly that the system we use in EVE is not triangulation or quadrangulation at all but is in fact called Multilateration [http://en.wikipedia.org/wiki/Multilateration Multilateration @ Wikipedia].  Also, please note that the 4 sphere multilateration is at the heart of 3 station GPS navigation as well.  The 4th sphere is the surface of the Earth. ;)

-Mara Saotome / Nerad Tendo

== multiple articles ==

Shouldnt we try to combine some of the material here? There seem to be mulitple articles out there. And Apocrypha Exploration should eventually just become Exploration. There can be a subject on the history of exploration if we like.