As shown in the picture, I want to identify the signal and how can I decode it, please. Here is the link to audio.wav file: https://u.pcloud.link/publink/show?code=XZRoY5VZggSdx8NPqKp3hAOaphcsKVVCqrik
It almost looks like over-the-horizon (OTH) RADAR of some kind, but the fact that it is at ~363MHz (and those two peaks) is an argument otherwise.
The pauses do not seem to have timer-like regularity, so it probably isn't a synchronous digital mode.
My guess is that this is encoded and (probably) encrypted voice (or voice+data) communications for coordinating aircraft. Perhaps double-sideband suppressed carrier. With both sidebands and a nice wide bandwidth the receivers can be made a little simpler (relatively), and voice communications will be fairly resilient to noise.
There isn't a lot of variation in the amplitude, though, which leads me to believe that it isn't only some sort of aircraft AM. That being said, it might just be very compressed and expanded.
More research would be necessary. It might be nice to see the spectra view widened so we can see more details. And if there is a recognizable sound to the signal this can really help identify it. My guesses above imply you should be able to hear modulated tones of some kind if you demodulate this as AM. If you capture the audio you might be able to compare it with examples on the Military Signal Wiki.
Decoding this traffic will probably be quite difficult if my assumptions are correct. If this is being generated by military spec SDR and encrypted you will have to be a pretty good cryptographer and/or have access to some special hardware.
There are apps like "SigDigger" that might assist in identifying encoding.