That’s the premise behind [RamboRogers]’ RF hunter, the spy movie electronic scanner made real. At the rear of the device is an ESP32, but the front end is an AD8317 RF detector chip.

This GNSS RF Receiver IP is silicon-proven in 22nm ULP process node, offers comprehensive support for all current satsatellite-based navigation systems, encompassing GPS (US), Galileo (EU), GLONASS ...