Q&A

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Antennas

Q: How does SignalPro interpolates a 2D antenn pattern? How does the horizontal plane pattern interact with the Vertical plane interpolation?

A: If your pattern only has 2 vertical slices at 0 and 180, then the software will do a linear interpolation. The 90 and 270 slices will be a 50/50 mix of 0 and 180. If your pattern has no slices then the software will assume the pattern as omni. The horizontal pattern will scale the vertical pattern.


Clutter/ Land use

Q: Is there a way to use different clutter loss files/different predictions models for different sites in the same project? (For example, one for urban and another for rural.)

A: Yes, Each site/sector can utilize its own propagation model and each prop model allows you to set a specific clutter attenuation file. For the example you would setup a urban prop model with that specific clutter attenuation file and then you would setup the rural prop model with its specific clutter attenuation file. Then ensure each site is set to use the appropriate propagation model.

Q: We recently purchased a clutter file in EDX format, but the land use/clutter displays in 200m resolution, even when the clutter file is in 30m, 10m and 1m resolution.
Also, the coverage predictions only display in 200m resolution pixels. I’m sure this is a simple fix, but I have searched everywhere and cannot find where to amend the land use or prediction resolution.

Could you let me know if it’s even possible or if 200m is the standard default.

A: The display resolution is determined by the Study Grid Point Spacing and not by the data itself. If you are using a data file with 30m resolution, go to Studies > Define Study Grid and set the grid point spacing to .03 km. This should re-extract the displayed clutter data at that resolution.

Q: Is there a procedure to convert 2011 National Land Cover Database (NLCD) 3x3degree GeoTIFF format to EDX .GCV?

A: Currently, EDX supports the following file formats for conversion to EDX.GCV format:
ASCII ground cover file
ArcView .shp file
Polygon .bna file
USGS DEM format
MSI-Planet format
ArcView ASCII Grid
ArcView Binary Grid
ATDI .sol file
MapInfo .mif vector to EDX .bna (clutter carving)

If you have a procedure to convert the 2011 NLCD 3x3degree GeoTIFF format file to one of the above EDX supported formats, then it can be converted to EDX .GCV format.

NOTE: QGIS is an open source format tool that supports GeoTIFF. If you can convert that file and export it as an ArcView ASCII grid, then it can be converted to EDX.GCV format.


Importing

Q: Does the CSV file I import have to contain every column in the exact order or does EDX just look at the column header.

A: The spreadsheet editor is looking at the headers. The columns dont need to be in the same order but you should not include headers in your CSV file that are not in the spreadsheet editor. If you choose to leave out columns or leave them blank they will be left blank when imported in.

 


IT

Q: Does EDX rely on any Microsoft software to run?

A: We rely on Visual Studio C++ runtime libraries and .NET. But we don't rely on any particular application to be installed or running. So, no, SignalPro doesn't require Visio or Visual Studio to be installed. The installer will install the necessary C++ runtime libraries and .NET if they are not already installed on the user's machine.


Map

Q: The bing map is in a satellite view is there a way to change the view?

A: To change the map view navigate to map> setup map layers and then double click on the bing map layer and then use the drop down menu under map imagery type.

Q: Can the EDX map spacing be modified?

A: Yes, Navigate to Map > Current Map view. Within the dialogue box that pops up you will be able to adjust your scale.

 


Study Results

Q: After running a few area studies, I would like to see how much area(sq miles) is covered by a site and limit the area by a boundary. Is there a way to do this analysis in EDX?

A: Yes, This can be done by navigating to Query>Study queries. Within the Study queries dialogue you will be able to do an analysis of your coverage and point to your boundary files as well.

Q: Can SignalPro generate prop study maps & provide them in ESRI shapefiles?

A: You can export your study map layer by navigating to map>setup map layers in the menu bar. Then highlight the study you wish to export and click export layer. A dialogue box will apear and you can choose to export as a SHP file.

Q: How do I export a prop map result to Google Earth?

A: You can do this two different ways, both will give a KMZ export of your map. The first way is to navigate to Studies in the menu bar and selecting the study type you wish to export. A dialogue box will appear and the option is in the bottom left corner. You can also export through the map layer by navigating to Map>setup map layers, highlight the study you wish to export then click the button that says export layer and choose KMZ (GoogleEarth.)

 

Q: Page 103 of the reference manual states the following regarding radio point spacing and clutter pass through losses:
"For example, if you have a 30 meter clutter database, and you’ve set your study point spacing along the radials to 30m, then at most, you’re going to get one study point per clutter type at each receiver location. The program needs at least 4 points in each clutter type to effectively calculate distance and loss for a given clutter type”

We are moving to much higher resolution clutter data (e.g. Cirrus 1m or other sources at 2m or 5m). How does the above statement come into play for these higher clutter resolutions? For example, if we have 5 m resolution, does that mean that we need to set the radio spacing to something like 1 m to ensure that at least five points are captured within each clutter tile?

A: That would be overkill. It's especially important not to under-sample the clutter when using the lower resolution data sets, but when you go to a 5m or 1m data there wouldn't be any benefit to having a sample point every 0.25 meters, the difference in losses from a couple meters worth of interpolation won't be dramatic like it can be when dealing with 30m blocks of clutter. You might try setting the study point spacing to be equal to the clutter resolution and see how quickly the studies run.