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9.5 GRID FACTOR
Measured horizontal distance is multiplied by the scale factor in coordinate calculation.
The raw data is not altered by the scale factor. Enter the scale factor and the mean
elevation into screen, the downloaded raw data will contain a scale factor record. The
following grid factor is used to calculate coordinates.
Calculation Formula
1. HEIGHT FACTOR=
ELEV
R
R
R
:
The average radius of the earth
ELEV
:
The height of the mean sea level
2. SCALE FACTOR
Scale factor
:
the scale on the measurement station
GRID FACTOR
Grid factor = height factor×scale factor
Distance Calculation
1. GRID DISTANCE
HDg = HD × Grid factor
HDg
:
Grid distance
HD
:
Ground distance
2. GROUND DISTANCE
HD =
Grid
HDg
Enter the scale factor and elevation.
Example
:
OPERATIONAL STEPS
KEY
DISPLAY
①
In [Project] menu,
,
Click [Grid
Factor] (or press [▲]/[▼] to
select)
,
the screen displays as
the right graph.
[Grid Factor]
Содержание KTS-470 R Series
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