Visualising 1090 MHz pulses

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vk4tec
Posts: 1
Joined: Fri Jul 21, 2017 9:29 pm

Visualising 1090 MHz pulses

Postby vk4tec » Fri Jul 21, 2017 9:38 pm

Hello

Planes transmitt pulse position modulation on 1090 MHz

I am interested in seeing these pulses like an oscilloscope

Is it possible with the SDR play ?

The pulses are 56 bits and 112 bits and are very fast

Andy VK4TEC
Last edited by vk4tec on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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F1BJB
Posts: 100
Joined: Wed Jul 15, 2015 4:24 pm
Location: Beauvais France

Re: Visualising 1090 MHz pulses

Postby F1BJB » Sun Jul 30, 2017 10:30 am

Hi
It should be possible but the software is missing AFAIK.
A possible trick would be to record I/Q as an audio file with high 3 MHz sampling rate
and then to play it back much slower in audacity or another software able to display audio waveforms.

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