Hello everyone, I’m receiving a strange signal with a central frequency of approximately 1230 MHz. Does anyone know a satellite with a downlink frequency of a close value?
Here’s a picture of a spectrogram of the signal. It looks like a radar at first sight:
Thank you for responding! The receiver is an antenna array, the frequencies we are capturing are between the 1.2 GHz and 1.8 GHz.
I don’t know much about dc component in signals, but if it was a dc spike of an sdr, wouldn’t that mean that those patterns should be present all the time? because I think this is the first time we see this kind of pattern.
Oh yes, about the receiver, it is a heterodyne receiver, with a 1.2 GHz sampling frequency. I don’t really know much more details about how the block diagram works, but I can look up the info in my documents. Thank you for your help!
BTW I have looked up the frequency of some SAR downlink frequencies, and it seems ALOS-2 emmits in the band I am looking, and I have tracked the satellite and it is close to the event time I sent, but I don´t know if anyone knows more about that sat.