3D Vector Building Databases
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Vector databases are the most
accurate type of building databases for urban scenarios.
These vector databases should therefore be used
in (dense) urban areas to get the highest accuracy in the path loss
predictions.
WinProp uses 2.5D (cylinders with polygonal
groundplanes and flat rooftops) vector data for its accurate
propagation models.
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Manhattan, New York
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The
objetcs (i.e. buildings) in the database should be compatible to the
following requirements:
- Polygonal cylinders
- Arbitrary number of corners (supported during
conversion)
During computation WinProp uses inrternally max. 256 corners and
removes redundant corners if necessary.
- Flat rooftop (uniform height of building)
- Individual characterization of material properties
for each building
- Vegetation blocks (parks and trees) - also
defined as polygonal cylinder
- Additional consideration of topography
possible (either building height relative to ground level or absolute
to sea level).
- If CNP
for combined urban/indoor analysis is selected, indoor
walls can be considered additionally (this is optional).
In CNP mode also non-falt-rooftops can be modeled.
Format Specification
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The file format
specifications of AWE's urban building data export and
import format as well as the topography data format are available and
can be downloaded here:
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Monaco (incl.
Topography)
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Conversion
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A very open ASCII
data format
allows a fast import of arbitrary database formats.
Several
converters for many commercial database formats are available:
- MapInfo
- ArcView Shapefiles
- DXF (2D or 3D)
- Gen format
- MSI Planet
(Marconi)
- Aircom Enterprise
- Nokia NetAct
- Ericsson TEMS
- Siemens
Tornado & TornadoN
- Agilent
Wizard
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Hong Kong (China)
(incl. topography)
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The
import of these data formats can be tested before purchasing the
software. Please send us your data by e-mail and we will convert it for
you and send you
the converted data together with our database viewer. So you can be
sure
that all WinProp modules will be able to read your data.
If your data format is not on the list above and if you are not able to
develop a converter to the open import data format of WinProp, you
should contact us and send us a sample file together with the format
description. We will send you an offer for the integration of your new
converter within a few days.
The document ConversionData contains all relevant information for the
conversion of databases.
Urban building databases can be obtained from different vendors (in WinProp format) for all major
cities on the globe.
Pixel Databases
Many
GIS and CAD software products offer an add-on module to convert scanned
maps into vector data.
SO scanned maps can be converted to
vector databases and then saved in one of the above listed file
formats. These
files can afterwards be imported with WallMan and converted to
WinProp's data format.
Additionally WallMan also includes a
Pixel => Vector converter to convert scanned maps into 2D vector
data. This converter is developed by AWE Communications and can be
configured to obtain best conversion results.
If the requirements
concerning accuray are not very high, pixel databases can be used to
describe the buildings (see figures). But AWE recommends vector
databases (see below) for the accurate propagation models. If no vector
databases are available it is possible to convert pixel databases to
vector databases. Please ask our support team for
details.
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Pixel Database
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Vector Database
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