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2 length rotation – Triton TargetPro User Manual

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June 2004 TargetPro™ User's Manual

Figure 7. Length Adjust concept and relationship to length and line

3.1.2 Length Rotation

(L Rot.) is the rotation angle of the drawn line. This angle is relative to the
horizontal line of the across-track vector. As indicated in Figure 8, angles
above the imaginary horizontal line are positive (>0); angles below the
imaginary horizontal line are negative (<0). The angle’s value is not
computed in the bitmap space but is based on real ground distances (that is,
the angle value takes into account that the scale is different in the along-
track and across-track direction).

Chapter 3: Measuring a Contact

23