Velocity De-aliasing Code

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Sambit Panda

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Apr 24, 2020, 2:42:16 AM4/24/20
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Hi Everyone!

I have been using wradlib for three years now and I absolutely love it! Thanks to the creators for creating such a cool and useful utility for us Radar Meteorology novices.

Anyways, even though there are multiple utilities available in wradlib and the library is just expanding over the time with addition of new functionalities, I always missed the utility for radial velocity processing! Mostly Velocity De-aliasing,VAD, and VVP!

I have written a code for Velocity De-aliasing using python which is based on Zhang et al. 2006, which is a 2D multi-pass based iterative approach. If the developers don't mind, can I send it to you for review, so that may be in future we can add such utility, or atleast a recipe! Please let me know your thoughts!

Thanks and regards,
Sambit

Kai Mühlbauer

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Apr 24, 2020, 2:54:33 AM4/24/20
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Dear Sambit,

It's always a pleasure to get feedback from users about wradlib,
especially when it is so nicely written.

Nevertheless we take all suggestions and criticisms seriously. And you
are right, the velocity dealiasing and also VAD, VVP have been treated
with minor (no) effort so far.

Yes, we gladly accept any contribution into the wradlib code base that
does enhances it's capabilities or fixes bugs etc.

The best way for us developers is when the contribution comes as a Pull
Request on the wradlib github repo. There is a chapter in the docs on
how to do so: https://docs.wradlib.org/en/stable/community.html.

Be sure that the wradlib devs will give as much support on this way.
Hope to see you as a frequent contributor!

Cheers,
Kai


Am 24.04.20 um 08:42 schrieb Sambit Panda:

Sambit Panda

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Apr 24, 2020, 3:13:07 AM4/24/20
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Dear Kai,

Thanks for your response. I will go through the guide for github pull in the link you provided and get back to you.

Once again, thank you for all the support you guys have been extending to the community. Keep up the good work!

Regards,
Sambit

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Shubham

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Jun 11, 2020, 2:43:19 AM6/11/20
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Hi Sambit,
I am working with wradlib myself for quite a few time now. I was working on the same to get velocity dealiasing using python, but I couldn't complete it. Would it be possible for you to help me out, if possible could you send me the python code on the mail, so that I could study its implementation in python. I would be really grateful for your help.

Thanking you,
Shubham

Sambit Panda

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Jun 13, 2020, 5:04:37 PM6/13/20
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Hi Shubham,

Sorry for the late reply. Good to know that you are also using wradlib.

Actually the velocity De-aliasing was implemented from the following paper by Zhang et al.


It's quite a long code, which I had written as part of an internal project in my office. So, I have to obtain permission before I can share it on the public domain. That is one of the reasons I have not yet been able to submit the same to wradlib forum. 

But if you can read the paper and get familiar with the algorithm and may be start working on it. I can help you along the way!

Best wishes and regards,
Sambit

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