I'm looking to decode the QPSK signals from the METEOR-M2 satellite and I've been looking at a number of sites on the internet for QPSK decoding of IQ signals. I think I can see what to do but most of the examples I've seem (in a variety of coding languages) use an IQ stream that they have generated without further modulation.
As yet I'm not picking up the satellite signal (for some unknown reason - I've used a number of radios and antennae but I can't find any signal during a pass - but that is another story) so I'm not able to experiment with the received data stream.
I'm not clear if I need to do an FM decode (or some other decoding) of some sort of if I can use the IQ signal directly to feed into the QPSK decoder.
Just wondering if anyone else is doing this and can give me a bit of guidance?
Reason: No reason