Planes on offline map

[it9ybg]

Hi, I installed DumpHFDL on my RaspberryPi3, everything went fine, it works with VRS (Via TCP and VRS with Windows). I would like to leave ONLY my raspberryPi on, for example 2 days and then see, using the DumpHFDL .log file, all the planes received in 2 days, in a map like Google Earth or something else, is this possible? Thanks for any ideas.

[szpajder]

Yes, it is possible.

• Enable logging of aircraft positions to a separate file in a Basestation format (--output decoded:basestation:file=/some_dir/positions.log,rotate=daily).

• Extract required fields from the Basestation file - latitude and longitude is required as a minimum, everything else is optional. For example, in order to create a new file named positions.csv containing only coordinates, use cut -d, -f15,16 /some_dir/positions.log > positions.csv. 15 and 16 are field numbers to be extracted, numbering starts from 1.

• Open the newly created file with a text editor and add a header row at the top with field names. Save the file. It should look more or less like this:

lat,lon
32.043866,15.128502
17.123456,-100.363296
... etc.

Use your favorite GIS app to plot the resulting file on the map. For example in QGIS:

• start a new empty project (or open an existing one)

• from the top menu select Layer -> Add Layer -> Add Delimited Text Layer

• type the path to the positions.csv file in the "File name" field (or press the "..." button to browse and select it)

• inspect the "Sample data" section at the bottom and check if the fields names and their contents have been correctly recognized

• click "Add".

You should see the position points plotted in the main window. Obviously you need to add some map as a background, but this is off topic here - there is plenty of tutorials about QGIS around the web.

[it9ybg]

Thanks a lot, great idea. I use Google maps directly.
https://it9ybg.blogspot.com/2023/03/dumphfdl-decoder.html