Title: ACCURACY OF POSITION FINDING USING THREE OR FOUR LINES OF POSITION
Author(s): S. A. Goudsmit
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 1, Number 2
Pages: 34 - 35
Cite this article: Goudsmit, S. A., "ACCURACY OF POSITION FINDING USING THREE OR FOUR LINES OF POSITION", NAVIGATION, Journal of The Institute of Navigation, Vol. 1, No. 2, 1946, pp. 34-35.
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Abstract: In certain systems of navigation or position finding, the desired location is determined by finding two or more lines on which the location is situated. The position is then fixed by the intersection of these lines. If, as is usual, three such lines of position are determined, the errors in measurement cause the lines to form a small residual triangle (Figure 1). It is then assumed that the true position lies somewhere inside this triangle. In most cases the most probable position of the true location will be inside the triangle, but there is nevertheless a three-toone chance that the true position is outside.