HD-MAX Echo Sounder User Guide
49
central meridian corresponding to the projection mode.
Figure 7-6 Projection parameters
Ellipsoid transformation
Ellipsoid transformation parameters are to complete the transformation from
source ellipsoid space rectangular coordinate system to local ellipsoid space
rectangular coordinate system. The most frequently-used transformation
methods include: Bursa-Wolf, Molodensky, One-touch etc.
Figure 7-7 Transformation model
Set up parameters based on the selected ellipsoid transformation model or
acquire the parameters through Utilities, such as seven-parameter:
