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On Mon, 29 Apr 2002 10:03:44 -0400, Noyce, Bill wrote:

>
>You don't have to be so careful about the distribution, or about computing
>equations of lines.  The only thing that determines whether the triangle
>encloses the true position is the direction of the error of each bearing.
>The magnitude of the error affects the triangle's size, and how far it is
>from the true position, but doesn't affect which region of the figure contains
>the true position.  The triangle encloses the true position if all three
>bearings are increased a small amount, or if all three bearings are reduced
>a small amount, but in no other case.  This is the heart of George Huxtable's

This mixes probable error with the actual error of particular
measurements. I have already pointed out how many different sizes of
triangle can occur with the same probable error and the same actual
position.







Rodney Myrvaagnes                                  J36 Gjo/a


"Curse thee, thou quadrant. No longer will I guide my earthly way by thee."  Capt. Ahab

   

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