
GeoB
ASIC
Reference Manual
5.Standard Functions
TPS1100-Version 1.30
5-63
5.6.23 GM_CalcVAndSlope
Description
Calculation of zenith- and slope-distance from given points
(Cartesian coordinates).
Declaration
GM_CalcVAndSlope(
StationPt
AS GM_Point_Type,
TargetPt
AS GM_Point_Type,
byVal dInstrHeight
AS Double,
byVal dRefHeight
AS Double,
dVZenit
AS Double,
dSlopeDist
AS Double,
dStdvVZenit
AS Double,
dStdvSlopeDist
AS Double )
Remarks
Calculation of zenith- and slope-distance from given points - cart.
coordinates.
Note
Used formula: see Appendix, Geodesy Math. Formulas.
Parameters
StationPt
in
coordinates and exactness of the
station point
TargetPt
in
coordinates and exactness of the
target point
dInstrHeight
in
instrument height [m]
dRefHeight
in
reflector height [m]
dVZenit
out
calculated V-direction (zenith -
distance) [rad]
dSlopeDist
out
calculated slope distance [m]
dStdvVZenit
out
middle error of the V-direction
[rad]
dStdvSlopeDist
out
middle error of the slope-distance
[m]
Return Codes
GM_IDENTICAL_PTS
StationPt
and
TargetPt
are
identical. Calculation is not
possible.
Example
Calculate the values.
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