NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Bris accuracy? 1
From: Doug Royer
Date: 2004 Nov 8, 13:09 -0800
From: Doug Royer
Date: 2004 Nov 8, 13:09 -0800
Let's not get our panties in a bunch over these results just yet.That is why I included the ? in the origonal title. I just wished to show the results of the sessions over the weekend.They appear to be getting closer to ther GPS coordinates the more I use the Bris. Perhaps I was lucky during the latest sessions. Perhaps my skill in useing this tool is getting better after useing it and getting comfortable in useing it. Perhaps my confidance level in the results are increasing after working LOPs the last few weekends. To many perhaps.Don't really know. This is what I do know: The 1st times I used this tool/procedure the results were in miles(between 8 - 12 miles differance.) The next times I used it the results were within a couple of miles differance. For this past weekend's sessions LOPs the "cocked hat" area of the LOPs were fairly large.I used universal plotting sheets to get the LOPs reduced useing the GPS coordinates and a scientific calculator.The reduction program I used uses an AP.The plotting sheets were used and that pos was gained before I used the software to get the pos. Because the "cocked hat" area on the plotting sheets was big I drew where the center of that area was on the sheet and used that point as the final position. Useing the same raw numbers the LOP software gave the positions as around 1,000yds with the same bearing on Sat. and around 800 yds with the bearing of 010* T for Sunday's position.