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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Determining distance via GPS readings
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<blockquote data-quote="Dave King" data-source="post: 21918" data-attributes="member: 3"><p>I was working on the "Thing", the Ranging Ballistic Computer and came upon a question/problem.</p><p></p><p> If distances are determined via GPS fixes, the resultant distances are "base" of the triangle distances and not "hypotenuse". (I hope this is correct). Same as using a topographic map for distance determination, it's all "base" distance.</p><p></p><p></p><p> Laser distances are, for practical purposes, "hypotenuse" distances and need angle correction for "base" distance.</p><p></p><p> Is there a "Rocket Scientist" here that can perhaps confirm that the GPS distances are "base" distances...</p><p></p><p> I need to know this as the wind calculation is based on the true and actual flight distance while the "click/elevation adjustment(s)" are based on the gravity or "Base" distance(s).</p><p></p><p> (I hate it when things are going well and all of a sudden I get wrapped around the axel.)</p></blockquote><p></p>
[QUOTE="Dave King, post: 21918, member: 3"] I was working on the "Thing", the Ranging Ballistic Computer and came upon a question/problem. If distances are determined via GPS fixes, the resultant distances are "base" of the triangle distances and not "hypotenuse". (I hope this is correct). Same as using a topographic map for distance determination, it's all "base" distance. Laser distances are, for practical purposes, "hypotenuse" distances and need angle correction for "base" distance. Is there a "Rocket Scientist" here that can perhaps confirm that the GPS distances are "base" distances... I need to know this as the wind calculation is based on the true and actual flight distance while the "click/elevation adjustment(s)" are based on the gravity or "Base" distance(s). (I hate it when things are going well and all of a sudden I get wrapped around the axel.) [/QUOTE]
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Determining distance via GPS readings
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