Frequency self-adaption method for shortwave frequency-hopping communication system

The invention discloses a frequency self-adaptive method used in a short-wave frequency hopping communication system, relating to a frequency selection method of hopping communication and aiming at solving the problem that the communication is affected owing to the working frequencies do not meet the communication quality requirement when the working frequencies meet bad frequency during channel variations. The method includes the following steps: setting a preset frequency hopping frequency database with N frequencies, numbering each frequency and selecting M better frequencies as the initial frequency hopping working frequency groups; during the communication process, both communication sides real-time monitor the communication quality of each working frequency, and store the working frequency into an abandoned frequency database when the working frequency does not meet the communication quality requirement and select a new frequency in the frequencies which are not used nor abandoned; a receiving side send