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reinerh

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Posts posted by reinerh


  1. As far as I see you defined a time-variant box and transmitter in your ProMan project.

    Which version of WinProp do you use?

    Please send your project (after export via File => Export => Export to zip) via e-mail (to reiner.hoppe@altair.de) and we will have a look.

    Generally the time-variant simulation is done as a loop over stationary snapshots (after having moved all the time-variant objects to the current position), so as workaround you can also save the stationary approach and define one project per time step in ProMan with the corresponding .idb file.


  2. Hello,

     

    the results on prediction planes can be exported to the ASCII line format via File => Export => Export Data (Planes), such ASCII files can be visualized in other software tools.

    In ProMan the results on (arbitrary oriented) prediction planes are only shown in the 3D view, here you can define by zooming etc. a nice view so that the prediction plane is fully visible and then save this view using the "Store" button on the upper right. For the next result (e.g. after having changed the project settings and rerun the simulation) you can then switch to the same view from the "Camera" drop down list in the upper right.

    Furthermore you can use the button "Save View to Image" to save the picture as .bmp, .jpg, or .png.

    All these buttons are only shown in the 3D view.

     

    AAU likes this

  3. Hello,

     

    the WinProp results are generally deterministic and consider the defined environment, so the results are also reproducible, i.e. if you run the simulation twice you will get two times the same results. The radio channel is generally subject to slow and fast fading. The slow fading represents the average signal levels, e.g. if you are behing a wall you get on average a lower signal level because of the shadowing due to the wall. The fast fading represents the "random" fluctuations due to changes of the phases for the individual propagation paths (rays) which are then either superposed contstructively or destructively at the receiver antenna. The fast fading can be reproduced in WinProp by using the standard ray tracing and activate the coherent superposition under the ray tracing settings. Then you will see the "random" fluctutaions of the signal level over short distances. Nevertheless also in this case the results are reproducible, but you might change the transmitter position slightly or analyze the signal levels at different receiver positions to see the fast fading and the random impact.

     

    AAU likes this

  4. Hello,

    after having defined the time-variant vector database (.idb file) in WallMan you can also check using the "time control" panel if the time-variant objects are moving as expected.

    Then you define a new propagation study in ProMan and select the "time-variant scenarios" and the corresponding .idb file. Under "Project => Edit parameters" Simulation tab then the field to define start time, end time and interval should be available.

    Generally we recommend to use the latest version of WinProp which is 2019.2.

     


  5. All the WinProp binary result files can be exported to ASCII formats (grid or line) in ProMan under File => Export => Export Data (Area).

    Alternatively the results can be directly written during the simulation in the ASCII grid format by activating the option "Additional output of results in ASCII files" under the Propagation tab of the project parameters in ProMan.


  6. Hello,

    using a network planning project in WiinProp you can consider the noise power (which depends on the bandwidth and noise figure of the receiver) as well as the co-channel interference from neighboring cells. Both will limit the signal-to-noise-and-interference-power ratio (SNIR). Please have a look in the ProMan manual for further details about defining and running network planning projects in WinProp.

     

    Best regards


  7. Please find attached your .odb file saved with a previous version of WallMan, so that it can be loaded in the 2019 version. However you will need to rerun the preprocessing for the urban IRT model (creating the .oib file) in case you want to use the IRT model. Otherwise you can continue with the DPM model.

    Which version did you use to create the original .odb file?

    Laurentides12_3.odb


  8. Hello Terry,

     

    the .add file with additional data from open street map can be loaded in ProMan (just for display, i.e. not considered in the wave propagation simulation) by using the following steps:

    • Load in ProMan the project (.net) based on the corresponding .odb file
    • Then in the menue select Display => Additional Data: Layer Management
    • Select "Load" in the shown dialog:image.png
    • Press OK and all the loaded layers from the .add file will be displayed in ProMan:
    • image.png

     

     

    Best  regards,

    Reiner


  9. Hello,

    in order to create a urban building database based on a scanned bitmap please select the following options after File => New Database:

    image.png

    Next there will be a dialogue to enter the UTM zone (e.g. 32 for Germany) and then another dialogue will allow to load the bitmap.

    The detailed steps are described in the WallMan manual chapter 3.4.4.

     

    Alternatively to the manual drawing based on  imported bitmap you might try to use another format for the import, e.g. MapInfo or DXF/DWG if QGIS allows you to save the building data in one of these formats which are also supported by WallMan.

     


  10. So far WinProp can be used up to 100 GHz.

    Basically at higher frequencies the diffractions will disappear, for the other interaction types the material properties need to be adapted.

    So it should be feasible to increase the upper frequency limit in the mid term.


  11. Hello,

     

    the shapefile should contain the buildings as closed polygons. The polygon should not intersect itself, which means that the sequence of corners is not correct.

    According to the error message shown from your side this seems be to the reason why the building cannot be imported.

     

    If possible we recommend to use the MapInfo format for import in WallMan.

    But the shapefile format will also work if the buildings are defined correctly.

     

    Best regards


  12. Hello,

    in case the transmitter was modified the results become invalid and need to be re-computed.

    Please press the RunPRO button for re-computation and in case of a network planning project then also the RunNET button for computation of the network planning results.

     


  13. Hi,

    this error means that the network planning simulation cannot be started because of the missing path loss results.

    Please have a look in the ProMan progress window (Antenna tab) to get more details why the path loss results cannot be computed with RunPro.

    Just scroll up in this progress window until you will the corresponding error message given in red.

     

    Best regards


  14.    First you need to convert every .hgt file into the .tdb format. Then there is the following way to combine multiple topo files in ProMan which can then be used for simulations:

    • Load the first *.tdb file in ProMan and combine the second *.tdb file via Edit => Combine Data => Max Value
    • Fill the undefined pixels using Edit => Modify Data in Area => Interpolate Data
    • Save the resulting topo data into a new *.tdb file via Data => Topo Database => Save As

    For rural scenarios the predictions can be also done for individual Rx points (under the simulation tab you can enter the points). If the maps are in metrical UTM coordinates you need to convert first long/lat to UTM (in ProMan under Data => Convert Coordinate Datum).


  15. The superposition of the individual coverage results can be done automatically in a network planning project by RunNet. For this purpose you would need to define a network planning project in ProMan based on the corresponding air interface (wireless standard definition file *.wst).

    Without network planning project (i.e. in a propagation project) the coverage of individual Tx antennas/leaky feeder cables can be superposed in ProMan by using the following steps:

    First load one of the results (preferably *.fpp file) in ProMan via File => Open Result and then superpose the next result via Edit => Combine Data => Max Value (can be done for further results in the same way).


  16. The observered problems with the 3D view indicate that the DirectX DLLs are not correctly installed.

    Typically this should work using the updater, but as you still have problems I would recommend to download and install the required DirectX package from the following link:

    https://www.microsoft.com/en-us/download/details.aspx?id=8109
     

    For the commercial version please use the contact sheet under the Altair webpage:

    https://altairhyperworks.com/ContactUsFormHW.aspx

     

    Otherwise please let us know your e-mail address and we will connect you directly with the Altair team in China.

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