Spectrum Analysis Tutorial, Part 2: Properties and Applications of the Discrete Fourier Transform David A. Jaffe Computer Music Journal , pp. 17-35 (19 pages) ...

We covered using Pluto with GNU Radio a while back. We like how it connects like a network adapter, among other things. Spectrum analysis is a common project for one of these SDRs.

Keysight has introduced a real-time spectrum analysis (RTSA) solution that operates on the Keysight N9042B UXA Signal Analyzer, which provides satellite network operators up to 2 GHz of bandwidth ...