I have a relatively low-frequency signal and want to calculate the peak envelope of it in Simulink. I tried some of filters but the envelope is not well precise. can anyone help, how can I do it?
The best reference that I'm aware of on Complex Signal Envelopes detailing definitions, some difficulties and workarounds is:
Nuttall, Albert H. Complex envelope properties, interpretation, filtering, and evaluation. No. NUSC-TR-8827. NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT, 1991.