Three-frequency fast tracking frequency hopping device and method for medium-wave transmitter

The invention discloses a three-frequency fast tracking frequency hopping device and method for a medium-wave transmitter, and belongs to the technical field of medium-wave broadcast communication. The fast tracking frequency hopping device comprises a three-frequency control processor, an antenna, a frequency spectrum detector, a digital carrier memory, a demodulator, a multi-signal frequency spectrum analysis processor, a three-path digital tracking phase-locked loop, a tracking frequency memory, a three-path transmitter carrier frequency crystal oscillator, a multi-frequency transmitter and a frequency sampler. According to the invention, all medium-wave frequency band carrier signals are received through an antenna, audio signals and carrier signals are respectively separated through a demodulator and a frequency spectrum detector, then the audio signals and the carrier signals are analyzed and processed through a multi-signal frequency spectrum analysis processor, and the interference frequency of an ene