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directTDoA
directTDoA is a probably not so well known GUI written in Python that runs the TDoA algorithm locally on your computer. It has been gone thorough a lot of development since 2018 after Christoph first published his main TDoA code.
The creator Llinkz recently published a new version V5 (see https://github.com/llinkz/directTDoA) that has some unique features such as waterfall / SNR measurement, an ultimateTDoA mode which can use all available nodes in an user defined map area and can work with shorter than 30 second recordings for processing.
The latter is quite effective for short time signals such as 2G ALE and the last versions of the program interfaces via TCP with the Sorcerer decoder and can automatically start the TDoA process upon detection of an ALE signal. Very cool..
best regards, Ben
The creator Llinkz recently published a new version V5 (see https://github.com/llinkz/directTDoA) that has some unique features such as waterfall / SNR measurement, an ultimateTDoA mode which can use all available nodes in an user defined map area and can work with shorter than 30 second recordings for processing.
The latter is quite effective for short time signals such as 2G ALE and the last versions of the program interfaces via TCP with the Sorcerer decoder and can automatically start the TDoA process upon detection of an ALE signal. Very cool..
best regards, Ben
Comments
Not much changes for linux and macOS users (just adding back a Listen/Demod service, like in the directKiwi project and some bug corrections)
(to get Listen/Demod working w/o re-installing everything, get the directTDoA.py from the repository and read the changelog for instructions)
But the main point is that Windows version is now fully functionnal and is delivered as file package.
So, people who wish to use the application on Windows OS will not have to worry about installing full GNU Octave, git and of course python with its modules. All files are already patched and compiled in the available archive. Just unzip & play !
Thanks to @daniel for this work.
&linkz
&linkz
I've just released v7.00
&linkz
Just downloaded the Windows version, only it looks like it is for Linux. The README file is full of Linux-type code. Is there a .exe file to run this under Windows? I can't find it.
Ken VE3HLS
Hi Ken
https://github.com/llinkz/directTDoA/releases
download and extract the latest .zip archive on your disk and double-click on directTDoA.bat
there is no .exe file
&linkz
Hi linkz,
installed the windows version and changed the Mapbox API but it doesn't seem
to run correctly. I attached the screenshot for interest. Question: is there a possibiliy to zoom
in to the map? I find it difficult to choose the TDoA KIWI rx on the small world map.
Kai DJ9KAI
Hi Kai
Weird issue, the embedded imwrite (MatLab function) is supposed to correctly save the plot as a .png image.
Do you double-click directTDoA.bat to lunch the whole thing ? Else it's probably because you're using your local octave and/or python
Normally all the "python/octave/matlab" package is static and should not throw errors
Regards
linkz
There is currently a problem with Kiwi's running v1.647 - 1.649. The GPS timestamp in the .wav file may not be valid/accurate. So please be aware of that. We are working on the problem..
Hi John,
Maybe check with my co-sited KiWi V1&2 that the timestamps correspond too, as the GPS chips are different.
Regards,
Martin
Yeah I noticed that last night. Both directTDoA & online extension are affected.
no recent GPS timestamps on most Kiwis in the octave logs.
Thx for the work
@BlackForest
Question: is there a possibiliy to zoomin to the map?
I forgot to answer you on that point, sorry. (for the delay too)
It's a thing I have never fixed, the zoom function exists but has display/point offset bugs so I've commented the key/mouse binding in the code. (btw, seems to work fine on Linux but may have problems in certain circumstances).
Try to uncomment the "Windows Zoom" line in directTDoA.py file (near line 856) and check.
# self.canvas.bind_all('<MouseWheel>', self.wheel) # Windows Zoom
# self.canvas.bind('<Button-5>', self.wheel) # Linux Zoom
# self.canvas.bind('<Button-4>', self.wheel) # Linux Zoom
Regards
linkz
I've just released v7.20 because of the recent TDoA issues
Many thanks to Christoph & dev team for the bug fix in kiwirecorder.py
Not much modifications in 7.20, it concerns only the bug:
LINUX/MACOS: It will still use an old version of kiwiclient so I've just modified the patch in the installation process (kiwirecorder_patch.diff). you don't necessarily need to upgrade your installation to 7.20 as you can edit the kiwirecorder.py file manually, it's a simple code fix - see https://github.com/jks-prv/kiwiclient/commit/bc189087cf503820d56ddcc0f8781d7eed1b6337
WINDOWS: The file kiwirecorder.py has been manually modified in the release v7.20 package
Quick note: the "Listen mode" is not working anymore.
Regards
&linkz