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13. COORDINATE MEASUREMENT
2. Tap the screen title to display popup and select
"Key in azimuth" display and enter the desired
angle in "Azimuth".
•
[SRCH]
: Performs Auto Pointing. Rotates the
instrument in the direction of the backsight.
•
[Azimuth] /[H.ANG]/[None]/[0 SET]
: Switches
horizontal angle setting method.
3. Press
[OK]
to set the input values. <Coord.
measurement> is displayed.
Horizontal angle settings
Azimuth (set both horizontal and azimuth angles to the same value)/H.ang (input both horizontal and
azimuth angles)/None (input azimuth angle only)/0 SET (horizontal angle set to 0
°
)
The coordinate values of the target can be found by measuring the target based on the settings of the
instrument station and backsight station.
The coordinate values of the target are calculated using the following formulae.
N1 Coordinate = N0 + S x sinZ x cosAz
E1 Coordinate = E0 + S x sinZ x sinAz
Z1 Coordinate = Z0 + S x cosZ + ih - th
N0: Station point N coordinateS: Slope distance ih: Instrument height
E0: Station point E coordinateZ: Zenith angle th: Target height
Z0: Station point Z coordinateAz: Direction angle
"Null" coordinates will not be included in calculations. "Null" is not the same as zero.
PROCEDURE
1. Sight the target at the target point.
13.3 3-D Coordinate Measurement