Development of a Multi-Channel Spectrum Analyzer for NASA SETI: Instrumentation and Signal Processing for All-Sky and Targeted Searches (Mid-1980s)

To the point

D. K. Cullers, I. R. Linscott, and B. M. Oliver describe a multi-channel spectrum analyzer for SETI that supports all-sky surveys and targeted searches, detailing how the instrument and its signal processing can detect continuous waves, pulses, and patterns to identify candidate extraterrestrial emissions.

Signal processing in SETI - PubMed
nih.gov

Signal processing in SETI - PubMed

Signal processing in SETI