I am collecting I/Q samples from an RTL SDR dongle.
I notice the
rtl_power utility provided for Linux filters and does other processing, before reporting signal strength.
I just want to keep track of how strong a frequency range is (eg. a 25k bin, as passed to
Can I just square the I and Q and add them, or do I need to do the filtering and other processing that rtl_power does, first? What's appropriate in what situations?