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Contents
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DFHRS - Support and Softwareproducts
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DFHRS Support and Application - Software with
DFHRS_DLL - Interface
DFHRSF_DLL
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The DFHRS_DLL is the basic interface for the
implementation of any DFHRS_DB-Access into GNSS-Controllers,
GNSS-Grid-Factories, GIS-Windows-Software and for the Setup of the new RTCM
3.0 Height Positioning Message based on DFHRS-Databases .

Fig.: DFHBF-DLL as implemented in the Windowes postprocessing Software
DFHBF-Tools
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DFHRS - Software
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To compute Digital-Finite-Element
Height Reference Surfaces, the C++-based DFHRS-software has been developed
at Karlsruhe University of Applied Sciences
(HSKA) since 1999. Besides several functions for visualisation and
utilities for an automatic and a manual meshing and a powerful
least-squares adjustment is implemented in the DFHRS production software.
It enables a sophisticated quality control including gross error detection,
reproduction quality estimates, and variance component estimation for all
observations and observation groups respectively. The DFHRS production
software finally also sets up the DFHRS data base in a compressed format.
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Fig
: The DFHRS-Production
Software. Special tools for Visualisation of Observations (identical
Points (green) Geoid-heights (grey) and different Continuity Conditions
(blue)). Right: Example of a DFHRS meshing in the country Baden Württemberg
(part of Germany).
The whole area was subdivided into 28 "Patches", each with its
own set of datum parameters. The resulting mean accuracy was 1,0 cm.
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