Working with Determine Coord System
187
Requirements
•
The position is known in WGS 1984 and in the local system for at
least one point. Three or more points are recommended in order
to obtain redundancy.
•
Additional height information for one point enables the transfor-
mation of heights.
•
Parameters of the local geoid model. This is not compulsory.
•
No parameters of the local ellipsoid.
•
No parameters of the local map projection.
Area
•
Limited to about 10 x 10 km because no projection scale factor is
applied and a standard Transverse Mercator projection is used to
compute the preliminary WGS 1984 grid coordinates.
•
For areas without large height differences.
Points and
transformation
parameters
The transformation parameters determined depend on the number
of available points with position information.
•
One point: Classic 2D with shift in X and Y.
•
Two points: Classic 2D with shift in X and Y, rotation about Z and
scale.
•
More than two points: Classic 2D with shift in X and Y, rotation
about Z, scale and residuals.
Points and height
transformation
The type of height transformation performed depends on the
number of available points with height information.
•
No point: No height transformation.
Characteristic
Description
Содержание GPS900 Series
Страница 1: ...Leica GPS900 Technical Reference Manual Version 1 0 English...
Страница 9: ...Table of Contents GPS900 9 Appendix E Cables 276 Index 278...
Страница 10: ...PART 1 The System GPS900 10 PART 1 The System...
Страница 106: ...Configuring the Radio Channel GPS900 106 Actual Freq The actual frequency of the radio Field Description of Field...
Страница 165: ...PART 2 The Applications GPS900 165 PART 2 The Applications...
Страница 275: ...Pin Assignments and Sockets GPS900 275 Sockets 8 pin LEMO 1 LEMO 1 8 pin LEMO HMI 1B 308 CLNP...