DME client visualisation

[keukenrol]

Hi

I was wondering if it would be possible to visualise DME pulse trains from air to ground stations? Based on the following website this would mean a single interrogation pulse (bit) takes only 3.5 microseconds. https://www.studyaircrafts.com/dme

With a sample rate of 2.4MSPs this would give us approximately 8.4 samples for a single pulse.
I am currently doing some research on this topic and would like to know if someone with basic programming experience in c and python would be able to develop their own plugin for sdrangel? This is a reception only topic!

Long story short, DME frequencies can be found online and the ground and air stations are 63MHz apart. To allow multiple aircraft to send to the same station, every aircraft has its own pulse train on which the ground station replies by repeating it. I would then map the amount of "connected clients" on a given beacon, possible also trying to determine their pulse train.

Thanks!

[srcejon]

To visualise the pulses, you can use the scope within the channel analyzer plugin (set scope to show magnitude).

[keukenrol]

The pulses are of such short durations that it seems no pulses are there. I am relatively close to a ground station but I am unable to see pulses from both aircraft and ground station on their frequencies respectively.

[srcejon]

Post a screenshot or IQ file, maybe?