How to realize muti-reflection in WinProp?

XW
XW Altair Community Member
edited March 2023 in Community Q&A

May I ask how to realize muti-reflection in WinProp with 3D ray tracing? I created a simple scenario, and tried different numbers of interactions in project - edit project parameter - computation - prediction model settings, with 6 total, 4 reflections, 2 diffractions, or 4 total, 4 reflections, 2 diffractions. But as shown in the figure, for each path, there is only one reflection point, and I think there should be a path with TX-B1-B2-RX. The material I set here for buildings is glass, which is provided by WinProp and could be a good reflector. So may I ask how to realize muti-reflection in WinProp? Thank you in advance!

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Best Answer

  • Zeina
    Zeina
    Altair Employee
    edited March 2023 Answer ✓

    Hi XW,

    So you have an outdoor database which  you have preprocessed in WallMan, and used to perform an Urban prediction in Proman.

    Please note, that if you have not activated the "Multiple Interactions between objects included" option in the preprocessing parameters as below, only first layer interactions will be preprocessed. image

    When it is not activated, the preprocessed data will not include higher interactions, thus even if you choose >1 interaction in the computation options of the IRT in ProMan, only single interactions will be considered.

    I have attached a test project I have done where I have generated the preprocessed database with the aforementioned setting activated. (couldn't do it directly on the database you have shared since it is the preprocessed data and I did not have access to the original data).

    Please test from your side.

    Hope this answers your question :)!

    Best,
    Zeina

Answers

  • Zeina
    Zeina
    Altair Employee
    edited March 2023

    Hi XW,

    I have tested with a similar database, by setting an indoor propagation model, SRT as prediction model, and a total of 6 (4R, 2D) interactions. In this case I see all interactions.

    image

    Can you please attach your project to check all the computation settings you have used and the type of project you have defined? (File -> export -> export project as zip)

    Best Regards,

    Zeina

     

  • XW
    XW Altair Community Member
    edited March 2023
    Zeina said:

    Hi XW,

    I have tested with a similar database, by setting an indoor propagation model, SRT as prediction model, and a total of 6 (4R, 2D) interactions. In this case I see all interactions.

    image

    Can you please attach your project to check all the computation settings you have used and the type of project you have defined? (File -> export -> export project as zip)

    Best Regards,

    Zeina

     

    Hi Zeina,

    Thank you very much for your help and reply!

    I attached my project here. :) But there is one problem the OIB file and the STR file are so large that they cannot upload. 

    Best wishes,

    XW

  • Zeina
    Zeina
    Altair Employee
    edited March 2023

    Hi XW,

    You're welcome !

    Unfortunately the zip you have shared does not load and thus I cannot help with the settings :(.

    In Proman, after opening your project, if you go to File -> Export -> Export project as zip and chose "Export databases" only, it would be lighter to share. Like the following shot:
    image

    Once received I'll check the interference settings.

    Best Regards,

    Zeina

  • XW
    XW Altair Community Member
    edited March 2023
    Zeina said:

    Hi XW,

    You're welcome !

    Unfortunately the zip you have shared does not load and thus I cannot help with the settings :(.

    In Proman, after opening your project, if you go to File -> Export -> Export project as zip and chose "Export databases" only, it would be lighter to share. Like the following shot:
    image

    Once received I'll check the interference settings.

    Best Regards,

    Zeina

    Hi Zeina,

    The former one is so large (larger than 43MB) that I created a new similar project and attached it here :), maybe the former one is large because I imported the whole material document in it. Thank you again for your help!

    Best wishes,

    XW

  • Zeina
    Zeina
    Altair Employee
    edited March 2023 Answer ✓

    Hi XW,

    So you have an outdoor database which  you have preprocessed in WallMan, and used to perform an Urban prediction in Proman.

    Please note, that if you have not activated the "Multiple Interactions between objects included" option in the preprocessing parameters as below, only first layer interactions will be preprocessed. image

    When it is not activated, the preprocessed data will not include higher interactions, thus even if you choose >1 interaction in the computation options of the IRT in ProMan, only single interactions will be considered.

    I have attached a test project I have done where I have generated the preprocessed database with the aforementioned setting activated. (couldn't do it directly on the database you have shared since it is the preprocessed data and I did not have access to the original data).

    Please test from your side.

    Hope this answers your question :)!

    Best,
    Zeina

  • XW
    XW Altair Community Member
    edited March 2023
    Zeina said:

    Hi XW,

    So you have an outdoor database which  you have preprocessed in WallMan, and used to perform an Urban prediction in Proman.

    Please note, that if you have not activated the "Multiple Interactions between objects included" option in the preprocessing parameters as below, only first layer interactions will be preprocessed. image

    When it is not activated, the preprocessed data will not include higher interactions, thus even if you choose >1 interaction in the computation options of the IRT in ProMan, only single interactions will be considered.

    I have attached a test project I have done where I have generated the preprocessed database with the aforementioned setting activated. (couldn't do it directly on the database you have shared since it is the preprocessed data and I did not have access to the original data).

    Please test from your side.

    Hope this answers your question :)!

    Best,
    Zeina

    Hi Zeina,

     

    Thank you sooo much! It works well! :)

     

    Best wishes,

    XW