In: Products, Resources 25 Jul 2017 Tags: , , , , , , , , , , , , , ,

ATDI announces an innovative method to build digital terrain dedicated to propagation of electromagnetic waves.

How to improve the quality of radio planning:

Actual medium resolution clutter data dedicated to radio planning are based on classification (Dense urban, Suburban, Village, Building blocks, forest, hydro…). With this type of datasets, deterministic propagation models give acceptable results compared to measurements, however, a lot of measurement points cannot be correlated (even with tuning), due to the lack of accurate digital terrain and clutter information (heights and locations of the obstacles, open areas…).

This is why we have developed an innovative method to build more accurate DTM and clutter layers that can be used to create Medium Resolution (10m-20m) and High Resolution datasets (1m-5m).

Different free and commercial sources are combined to create more accurate layers at reduced costs compared to standard datasets.

 

In our example below, on a Medium Resolution dataset (20m)we extracted uncorrelated points from mobile measurement survey, then we performed fixed measurements on these points and built an innovative DTM/Clutter/Building dataset from open data to get better measures/predictions correlation results.

We have used Deygout 1994 / Fine-E propagation model in ICS telecom EV.

Dataset resolution: 20 m.

Test transmitter: 50 W / 138 MHz.

 

Standard Clutter (landcover) model (urban and vegetation contours):

New clutter layer built from Clutter/Building extraction model (Dataset made with ICS telecom EV and ICS map server):

Above, we can see a more realistic urban repartition (in red) than Standard Clutter model.

Building elevations are extracted and medium and high vegetation areas are classified.

Linear (roads, railways, waterways) are added to delineate urban blocks.

Processing time:

< 2 minutes (22 000 km²)

 

Coverage calculation result comparison

Above: Coverage calculation performed on Standard Clutter model

Above: Coverage calculation performed on New Clutter model. We can see a more realistic impact of urban blocks (West), and vegetation (East)

 

Correlation results (originally uncorrelated points only @20 m):

Clutter method Standard deviation Average error Correlation factor
Standard classification 6.78 dB -1.54 dB 0.72
Building extraction 3.81 dB 1.62 dB 0.92
Building extraction + Linear 3.79 dB 1.73 dB 0.92
Buildings transformed to 5 Clutter classes 3.83 dB 1.73 dB 0.92

 

This new method improves significantly the quality of simulations, especially in urban areas. It’s free for Medium resolution datasets and at very affordable price for High Resolution datasets.

We, at ATDI, continue to improve this method. Objectives:

  • Reduce radio planning costs
  • Get always more accurate results
  • Produce data faster

 

Cost:

Resolution Price in Euro
2 m 150 €/km²
5 m 40 €/km²
10 m 5 €/km²
Medium Resolution 0 €/km²

 

ATDI is now building a new China dataset. Will be available soon: www.atdi.com/cartography

 

Thanks to: Japan Aerospace Exploration Agency, National Geomatics Center of China, U.S Geological Survey, Open Street Map, Malta Communications Authority, DianZhen.

In: Products 19 Dec 2013 Tags:

Landsat 8 Image

Figure 1: Landsat 8 Image

With the release of Landsat 8 satellite imagery from the U.S. Geological Survey earlier this year, there is a renewed opportunity to acquire better quality land cover and land use data for performing a propagation simulation using digital terrain and clutter models. ATDI has released a white paper describing a few of the principle techniques utilized in extracting various classes of clutter from Landsat 8 multispectral imagery.

SP_CLUTTER_L82.jpg

Figure 2: Final Clutter layer of Sao Paulo, Brazil

Extracting Clutter Information from Landsat 8 Multispectral Imagery: When conducting a spectrum engineering study, it is common to perform a propagation simulation using digital terrain and clutter models. It is also common to display the simulation results of digital map imagery. High fidelity map imagery is now widely available to the public thanks to the competitive efforts between Google, Microsoft, Nokia, Apple and others. There are very few places in the world where one cannot find high resolution aerial, satellite imagery or detailed street maps. Additionally, free global terrain data is also easily accessible on the internet. The SRTM v.4 and ASTER projects have produced a contiguous medium resolution surface model of most of the planet. On the contrary, access to a good quality worldwide baseline for clutter data is still nonexistent. In a radio frequency propagation analysis, a clutter model provides information about the static morphological conditions above the terrain. Common clutter categories can include urban, suburban, open water and vegetation. Attaching measurement derived statistics and associating these values with a clutter model is a common methodology used for tuning propagation models.

Download the full white paper:pdf.gif  Extracting Clutter from Landsat 8 Multispectral Imagery

SP_RDS_CLTTR_L8.jpg

Figure 3: Image of Sao Paulo with Final Clutter layer with roads inserted

In: Products 24 Jun 2013 Tags: , , , , , , , ,

ICS telecom is a complete radioplanning and technical spectrum management solution.

New features:

Cartography :

  • Map zoom level up to 21, resolution 0.07 m (Bing, Open Street Map, Google)
  • Google Map support (Aerial, Topo, Physical)
  • Geospatial support (Aerial, Topo)
  • Geoportal support (WMS et WMTS, EPSG:900913-3857-102113-3785):
  • Poland (Cadaster, Topo, Ortho)
  • France (Cadaster, Topo, Ortho)
  • United Kingdom (Topo)
  • Other countries planned…
  • Automatic clutter builder from Corine Land Cover (EU + Turkey), and Open Street Map (worldwide)
  • GlobalCover clutter access (worldwide)
  • Worldwide DEM 20 m access
  • Vector layer in ICS online (population covered, polygons covered…)
  • DEM/DTM modification from vector polylines (roads, railways) using reference file (Altitude, Distance)
  • Import/Geocoding Clutter, Building and DEM/DTM
  • Search address engine (worldwide)
  • Station address update
  • Map scale (meter, kilometer, feet, nautical miles, statute miles)
  • WMS/WMTS server access (ICS online)
  • Google Map support ICS online (Base layer)
  • New vector layer options (isolate, activate, de-activate, filter…)
  • New map projections (Croatia, Sweden…)
  • Dynamic display: distance between stations
  • Natura 2000 support

1

23

 

Database:

  • Import/export Stations and Microwave links to your Cloud storage (STATIONX64 and MWX64 tables)
  • MySQL and SQL lite connection scripts
  • BRIFIC FM-TV access via ICS online.
  • Export vector coverage to your Cloud storage
  • Extended XML Import/export

4

5
Network optimization :

  • New tool « Transform »: Site and station modifying based on parameter sets, azimuths, coordinates, status, coverage, one click process.
  • Prospective planning: automatic antenna orientation and LTE planning.
  • Site and station optimizing: Antenna type, Azimuth, Tilt, Antenna height, Power (up to 25 combinations)
  • Route planning: site optimization including priorities and objectives (coverage, overlapping…). Application: GSM-R ETCS L1/L2 and non-ETCS, FM, Tetra…
  • Area planning: site optimization including priorities and objectives (coverage, overlapping…). Application: AMR, Smart-Grid, Tetra, Wimax, 2G/3G/4G, Broadcast…
  • Clustering: prospective planning, nodal networks, site searching, reporting.

Other functions :

  • Handover multi-technologies (2G/3G/4G/Tetra), intra/inter frequencies, intra/inter BSC-RNC-NetID, Handover surfaces based on coverage type (RSRQ, Ec/I0, RSSI…)
  • Neighbors: multi-technologies up to 100 000 candidates
  • New propagation model: Hata extended SEAMCAT compatible (CEPT)
  • TEMS Import: Bing/Nokia map support
  • Project World (WMAS) for Satellite coverage calculation
  • Extended object selection filters
  • Active View: coverage analysis and coverage calculation viewport limited
  • Indoor: vertical reflections
  • Profile settings: DVB-T2, FM ITU, FM Ofcom, GSM-R…
  • Protection areas: dynamic display
  • Interference calculation: new options
  • New diffraction/subpath evolutionary model: MD91
  • COFDM: SNF/SFN and SFN/MFN support up to 100 000 transmitters
  • Extended ICS online export
  • Extended UFS delta reports
  • RDS PI and DAB TII codes: automatic assignment
  • Menu configuration now included in ICS-LT …

A perpetual license of ICS telecom includes:

  • ICS telecom software license
  • Technical support during 1 year (telephone, email) (*)
  • Maintenance agreement with access to regular software updates during 1 year (*)
  • 1 day per year of software training on ATDI premises (Paris, Moscow, London, Warsaw, Sydney, Washington, Madrid, Bucharest, Mumbai) or on site (excluding travel and living expenses)
  • Bing Maps key
  • ICS cloud special rates for additional licenses required for a dedicated period of time
  • Access to Online World wide Builder module during 1 year (*)
  • ICS map server license during 1 year (*)
  • Access to ICS online during 1 year which includes (*):

50 MB of storage (more storage for additional price)
Possibility to upload radio coverage and sites
Data sharing (public or protected by password)
Access to BRIFIC database
Export stations and MW
Access to 20 meters worldwide DEM on demand

(*) : Can be renewed on a yearly basis from the second year following the PO.