Tripod Data Systems SURVEY PRO User Manual page 215

K>1.0
Mapping Plane
Fig. 3: Transverse Mercator Mapping Plane
A side view of the cylinder shows the effect of scale
Fig. 4: Localization Stereographic Mapping Plane
A side view of the ellipsoid and stereographic mapping
plane show the scale calculated for ground distances at
•
TDS Localization Stereographic Projection
The scale factor at the start location (usually the first GPS base
station in a project) is calculated for ground distances at the base
height. The scale factor increases more or less uniformly in all
directions as you move away from the base. The scale factor does not
change appreciable within the range of RTK GPS, so this map
projection is an excellent way to model simple flat earth ground level
coordinate systems.
K=1.0
K<1.0
K=0.9996
Central Meridian
distortion.
h
the base height.
GPS Overview
K=1.0
K>1.0
Distance on Ellipsoid
Distance on Map
Mapping
Plane
Terrain
Ellipsoid
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