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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
range finders
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<blockquote data-quote="ricka0" data-source="post: 82355" data-attributes="member: 3086"><p><strong>Re: range finders GG, brian b??</strong></p><p></p><p>[ QUOTE ]</p><p> B1g B0re: I wont make accuracy claims until I get two GPS's and range my pal (that we can get simultaneous GPS readings so atmospheric error is consistent). [ QUOTE ]</p><p> <font color="purple"> <strong>Be cautious with the above process. Accuracy of GPS depends upon a lot of things besides the local ionsphere conditions. Post processing from a local "station" keeps things fairly 'less' expensive.</strong></p><p><strong>I work with those **** things every day. /ubbthreads/images/graemlins/frown.gif I have access to an RTK system which is about the only thing that I would trust for Looooonnnnggg range distance measurement. Justa tho't. </strong> </p><p></p><p>[/ QUOTE ] </p><p></p><p>[/ QUOTE ] </font> </font> </font></p><p>Great we gave and expert. He's my thinking, please help out. I have two GPS that give the same readings when they are in the same place (they better). My two RF's max out at 1,500 and 1,300 yards. Suppose we range something at 1,300 yards (we range each other). With the wakie talkies we take simultaneous readings. My thinking was atmospheric conditions (including ionospheric) should be pretty darn close at the two locations. Generally in mathematics you can get much lower error bounds doing delta's than absolute values. The two readings should have very similar error terms.</p><p>I can test my conjecture by selecting two fixed points, recording atmospheric conditions, solar time, etc and readings over multiple days/times. A statistical analysis should revile the error bounds.</p><p>Note that RTK correction data is just noise when you get more than 50 miles from a transmitter (generally anywhere you're hunting).</p></blockquote><p></p>
[QUOTE="ricka0, post: 82355, member: 3086"] [b]Re: range finders GG, brian b??[/b] [ QUOTE ] B1g B0re: I wont make accuracy claims until I get two GPS's and range my pal (that we can get simultaneous GPS readings so atmospheric error is consistent). [ QUOTE ] <font color="purple"> [b]Be cautious with the above process. Accuracy of GPS depends upon a lot of things besides the local ionsphere conditions. Post processing from a local "station" keeps things fairly 'less' expensive. I work with those **** things every day. [img]/ubbthreads/images/graemlins/frown.gif[/img] I have access to an RTK system which is about the only thing that I would trust for Looooonnnnggg range distance measurement. Justa tho't. [/b] [/ QUOTE ] [/ QUOTE ] </font> </font> </font> Great we gave and expert. He’s my thinking, please help out. I have two GPS that give the same readings when they are in the same place (they better). My two RF’s max out at 1,500 and 1,300 yards. Suppose we range something at 1,300 yards (we range each other). With the wakie talkies we take simultaneous readings. My thinking was atmospheric conditions (including ionospheric) should be pretty darn close at the two locations. Generally in mathematics you can get much lower error bounds doing delta’s than absolute values. The two readings should have very similar error terms. I can test my conjecture by selecting two fixed points, recording atmospheric conditions, solar time, etc and readings over multiple days/times. A statistical analysis should revile the error bounds. Note that RTK correction data is just noise when you get more than 50 miles from a transmitter (generally anywhere you’re hunting). [/QUOTE]
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