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Spectra Precision Survey Pro v4.5 Ranger User Manual User Manual

Page 260

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User’s Manual – GPS Mode

250

7. In the list box, control points collected will

be identified with an H and/or V. Points

marked H will be used to solve horizontal
localization. Points marked with a V will be
used to solve vertical localization. You can
select or deselect any point by highlighting

that point and then: tap the H and/or V

column beside that point; press H and/or V
on the keyboard.

Note: If your base was set up on a known

point, that point is an eligible control point. If your base was set up
on a new point, then it is not visible on the control point list.

8. If you wish to hold the scale of the GPS measurements, but you

want the localization adjustment to correct for a rotation, check

the Solve Rotation Only control in the Fix H Scale to 1.0 box.

9. Double check the selection of control points and tap Solve >. The

localization parameters are computed using the selected control

points, and the next screen is opened with solution RMS values.

10. For both horizontal and vertical, the solution type and RMS value

from the control points are displayed. The solution type will be

one of:
• Unique: the solution was calculated

using the minimum number of control

points or fewer. In this case, there is no
least squares solution to provide

residuals, so the numbers in the N Err,
E Err

, and/or V Err columns are

misclosures calculated from the control

points that are not used in the
solution.

• LSQ: the solution was calculated with

more than the minimum number of
control points. In this case, the least

squares solution can produce residuals, and the N Err, E Err,
and/or V Err columns show residuals for the points that are
used
in the solution.