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Combination of Various Digital Data 
to Establish a Land Information System 
Jutta Leonhardt 
Institute of Photogrammetry 
and Engineering Surveys 
University Hannover 
FR of Germany 
Commission II,WG II/2 
Abstract 
The connection of digital data from analytical plotters,digitizers and 
geodetic instruments with an interactive graphics workstation to 
establish a Land Information System is shown.By example of the project 
Neustadt,the effective usage of the different components is described. 
l.Introduction 
All data we use for a Land Information System are stored to-day on 
different mediums,mostly on maps.Some of the desireable data is not yet 
available from either maps or data-banks.Thus we have the situation,that 
the data input for the establishment of a complex Land Information System 
-here the project Neustadt-needs all tools of modern digital data acqui- 
sition.In our case ,we use analytical plotters,digitizers and electronic 
surveying instruments with memory unit.The various digital data is super- 
vised and combined in an interactive graphics system to a Land Information 
System(LIS). 
2.Data Acquisition for a Land Information System,the project Neustadt 
  
For the project Neustadt we have cadastral maps as base of the LIS and 
the bundle block adjustment of aerial photographs for the geometric 
accuracy.(see Leonhardt et al.;Stampa- WeBe1) .C adastral maps ,utility- system 
maps are digitized with the Kern G5D-2 digitizing table,visible information 
(see Stampa-Wef3el)from photographs are measured with the analytical plotter 
Kern DSR-1.Some data are measured with the terrestrial surveys with the 
electronic theodolite Kern El with distancemeter DM 502 and recording unit 
R48, they are calculated by the program systems GEO 100,K0G0 provided by 
Kern. The data acquisition with the digitizer and the analytical plotter 
is done with the MAPS 200 program.The digitizer works also on-line to the 
interactive graphical screen IMLAC with the program MAPS 300. 
All recorded data is revised on the interactive graphical workstation, 
Kern MAPS 300. 
Description of the utilized Interactive Graphics Station 
All supervision,revision and combination of the differrent data files- 
produced either with the analytical plotter,the digitizer or geodetic 
measurements-is done on the interactive graphics station MAPS 300. 
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