Reference Data
Antenna Patterns
The new antenna Search and Select functionality lets you search the Antenna Database, select the desired Manufacturer & Antenna Pattern and add the same in the pattern list.
To access the Antenna Database:
Under the Antenna Input menu, click on the Manage my Antennas
icon.The Antenna Database dialog box will appear.
In the Search bar, you can search the Antenna Database by Manufacturer, Model or Description.
To do so:
Type the desired text in the Search bar.
Click on the Search
icon.The list of Manufacturers will be displayed.
Select the desired Manufacturer.
The respective manufacturer’s list of Antenna Patterns will be displayed.
Select the desired Antenna Pattern.
The respective Antenna Pattern’s information - ID, Name, Description, Frequency, Gain, Polarisation and Polar Maps will be displayed.
To add the Antenna Pattern in the Pattern list:
Click on the Add to my List
icon.Click on the OK button.
A dialog box will be displayed indicating that the respective Antenna Pattern has been added to Favourites.
The respective Antenna Pattern will be added to the Pattern list.
To remove a pattern from the Pattern list, you may click on Remove from my List
icon.Click on the OK button.
Antenna pattern data
The system consumes antenna patterns in TIA/EIA-804-B (NSMA) ADF and ANT formats which can be uploaded at /API/antennas.
All patterns should have 360 rows of horizontal data and 360 rows of elevation data.
For more information see Antenna patterns.
To validate an ADF pattern use our online tool here: https://api.cloudrf.com/API/antennas/validator/
Example TIA/EIA-804-B pattern file
REVNUM:,TIA/EIA-804-B
COMNT1:,Standard TIA/EIA Antenna Pattern Data
ANTMAN:,RFI Antennas for Bird Technologies Group
MODNUM:,CC806-06 @ 870
DESCR1:,Corporate collinear, 746-870 MHz
DESCR2:,Omnidirectional, 5dBd, 0o Downtilt
DTDATA:,20060213
LOWFRQ:,746
HGHFRQ:,870
GUNITS:,DBD/DBR
MDGAIN:,4.8
AZWIDT:,360
ELWIDT:,17
CONTYP:,7/16 DIN Silver Plated
ATVSWR:,1.5
FRTOBA:,0
ELTILT:,0
MAXPOW:,500
ANTLEN:,1.85
ANTWID:,0.077
ANTWGT:,7.1
PATTYP:,Typical
NOFREQ:,1
PATFRE:,870
NUMCUT:,2
PATCUT:,V
POLARI:,V/V
NUPOIN:,360
FSTLST:,-179,180
-179,-0.053
-178,-0.179
-177,-0.374
-176,-0.639
-175,-0.971
-174,-1.376
-173,-1.857
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-160,-17.679
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50,-18.776
51,-18.997
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58,-22.963
59,-23.627
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61,-24.695
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66,-25.294
67,-25.220
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69,-25.091
70,-25.066
71,-25.076
72,-25.125
73,-25.214
74,-25.343
75,-25.509
76,-25.711
77,-25.945
78,-26.210
79,-26.502
80,-26.818
81,-27.154
82,-27.506
83,-27.871
84,-28.243
85,-28.617
86,-29.000
87,-30.000
88,-31.000
89,-34.000
90,-36.000
91,-34.000
92,-31.000
93,-30.000
94,-29.000
95,-28.617
96,-28.243
97,-27.871
98,-27.506
99,-27.154
100,-26.818
101,-26.502
102,-26.210
103,-25.945
104,-25.711
105,-25.509
106,-25.343
107,-25.214
108,-25.125
109,-25.076
110,-25.066
111,-25.091
112,-25.146
113,-25.220
114,-25.294
115,-25.345
116,-25.343
117,-25.251
118,-25.041
119,-24.695
120,-24.216
121,-23.627
122,-22.963
123,-22.264
124,-21.568
125,-20.905
126,-20.300
127,-19.771
128,-19.333
129,-18.997
130,-18.776
131,-18.682
132,-18.725
133,-18.922
134,-19.287
135,-19.839
136,-20.590
137,-21.539
138,-22.631
139,-23.680
140,-24.280
141,-23.992
142,-22.862
143,-21.359
144,-19.862
145,-18.537
146,-17.431
147,-16.547
148,-15.876
149,-15.406
150,-15.127
151,-15.033
152,-15.122
153,-15.396
154,-15.866
155,-16.553
156,-17.499
157,-18.783
158,-20.560
159,-23.162
160,-27.412
161,-34.203
162,-28.598
163,-22.259
164,-18.110
165,-15.021
166,-12.551
167,-10.498
168,-8.756
169,-7.264
170,-5.982
171,-4.882
172,-3.946
173,-3.159
174,-2.509
175,-1.987
176,-1.300
177,-0.700
178,-0.200
179,-0.080
180,0.000
PATCUT:,H
POLARI:,V/V
NUPOIN:,360
FSTLST:,-179,180
-179,-1.097
-178,-1.096
-177,-1.095
-176,-1.094
-175,-1.091
-174,-1.088
-173,-1.085
-172,-1.080
-171,-1.075
-170,-1.070
-169,-1.064
-168,-1.057
-167,-1.050
-166,-1.043
-165,-1.034
-164,-1.026
-163,-1.017
-162,-1.007
-161,-0.998
-160,-0.987
-159,-0.977
-158,-0.966
-157,-0.955
-156,-0.944
-155,-0.933
-154,-0.921
-153,-0.910
-152,-0.898
-151,-0.887
-150,-0.875
-149,-0.863
-148,-0.852
-147,-0.841
-146,-0.829
-145,-0.818
-144,-0.807
-143,-0.797
-142,-0.786
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-140,-0.766
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-136,-0.730
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26,-0.012
27,-0.010
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29,-0.006
30,-0.004
31,-0.003
32,-0.002
33,-0.001
34,0.000
35,0.000
36,0.000
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38,-0.002
39,-0.003
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42,-0.010
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44,-0.016
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54,-0.078
55,-0.087
56,-0.096
57,-0.105
58,-0.115
59,-0.125
60,-0.136
61,-0.147
62,-0.158
63,-0.170
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65,-0.193
66,-0.205
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69,-0.242
70,-0.255
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72,-0.280
73,-0.293
74,-0.305
75,-0.318
76,-0.330
77,-0.343
78,-0.355
79,-0.367
80,-0.379
81,-0.391
82,-0.402
83,-0.413
84,-0.424
85,-0.435
86,-0.445
87,-0.455
88,-0.465
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90,-0.484
91,-0.492
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93,-0.509
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95,-0.524
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97,-0.538
98,-0.544
99,-0.550
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101,-0.561
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153,-0.887
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161,-0.977
162,-0.987
163,-0.998
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165,-1.017
166,-1.026
167,-1.034
168,-1.043
169,-1.050
170,-1.057
171,-1.064
172,-1.070
173,-1.075
174,-1.080
175,-1.085
176,-1.088
177,-1.091
178,-1.094
179,-1.095
180,-1.096
ENDFIL:,EOF
Terrain data
The system works with raster data in either ASCII grid or GeoTIFF formats.
VM users can add their own tiles by placing them in the mapped /data/DSM/ folder and clicking “Reprocess DSM” within the admin dashboard.
GeoTIFF tiles need to be of type Int16 in WGS84 (EPSG:4326) projection with a pixel resolution of between 1 and 30m.
For a map of system data see Terrain data map.
When using LiDAR data, users should be aware that it is a single surface layer which includes buildings. Therefore if you have a 2m mast on top of a 20m building this is still a height of 2m for the input form. If you do not have LiDAR but do have a digital terrain model (DTM), you would need to enter a height of 22m to simulate a 2m mast atop a 20m building.
In the web interface, LiDAR data is used when Clutter is OFF and it’s installed. If Clutter is ON (Soft or Hard), then a 30m DSM model is used (which lacks buildings) and clutter items are placed upon it.
Clutter data
The system has several forms of landcover data to enhance above surface accuracy, especially in urban areas.
VM users connected to the internet can benefit from third party buildings which are automatically pulled in for cities.
All users can draw and self-classify private clutter items in the web interface as polylines or polygons. Using this technique you can represent almost any obstacle from light trees through to concrete.
Large numbers of obstacles can be uploaded as KML or GeoJSON in the web interface.
Uploaded clutter belongs to a user or the system. VM administrators can override clutter ownership manually in the SQL clutter table to make it system clutter for the benefit of all users.
For more information on landcover classes see Clutter data.
10m Landcover
The primary clutter source is European Space Agency (ESA) 10m Landcover data, published in October 2021.
WorldCover provides a new baseline global land cover product at 10 m resolution for 2020 based on Sentinel-1 and 2 data that was developed and validated in almost near-real time and at the same time maximizes the impact and uptake for the end users.
A tremendous step forward towards the joint use of Sentinel satellite data for worldwide land cover mapping.
© ESA WorldCover project 2020 / Contains modified Copernicus Sentinel data (2020) processed by ESA WorldCover consortium
This comprehensive dataset covers the planet and has 9 bands for Trees, Shrubland, Grassland, Crops, Built-up, Bare ground, Snow/Ice, Water, Swamps and Mangroves.
3D Buildings
A supplementary clutter source are 3D Buildings, derived from Openstreetmap data. These are accurate to 2m and have good coverage in Europe especially.
Public or VM users connected to the Internet can benefit from third party buildings which are automatically pulled in for urban areas worldwide.
Custom Clutter
All users can draw and self-classify private clutter items in the web interface as polylines or polygons. Using this technique you can represent almost any obstacle from light trees through to concrete.
Large numbers of obstacles can be uploaded as KML or GeoJSON in the web interface.
Uploaded clutter belongs to a user or the system. VM administrators can override clutter ownership manually in the SQL clutter table to make it system clutter for the benefit of all users.
For more information on land cover classes see Clutter data.
Selected Profile
Save new profile as name
Save and delete name listed in 2.
Building attenuation
Land cover types
My obstacle (clutter) types
Delete my obstacles
Clutter codes
System Landcover
1 Water
2 Trees
3 Grassland
4 Swamp
5 Crops
6 Shrubland
7 Built-up
8 Bare ground
9 Snow / Ice
Custom Clutter
11 Trees -
12 Trees +
13 Timber -
14 Timber +
15 Brick -
16 Brick +
17 Conrete -
18 Concrete +
19 Metal
Clutter Profiles
Premium users can define custom clutter profiles for regions eg. AFRICA.clt, POLAND.clt. These are saved within your folder as .clt files. VM users can add these locally by placing .clt files in the folder.
A .clt is a simple text format with tab delimiters and 3 columns: Code Height (m) and nominal Attenuation (dB/m).
The system default, Minimal.clt, looks like this. Code 10 is not used.
1 1 0.0
2 1 0.01
3 1 0.0
4 1 0.001
5 1 0.002
6 1 0.002
7 1 0.02
8 1 0
9 1 0
10 0 0
11 6 0.1
12 8 0.2
13 3 0.25
14 4 0.3
15 5 0.4
16 6 0.5
17 7 0.6
18 8 0.7
19 3 1.0