Short-wave frequency searching device and control method thereof

Abstract

The invention relates to a short-wave frequency searching device which comprises a broadband receiving unit, a digital down-conversion module, a digital signal processing module, a main control module, an interface module and a power supply module; wherein the broadband receiving unit comprises an antenna isolator and a short-wave broadband receiving module; the digital down-conversion module is used for collecting an intermediate frequency signal provided by the broadband receiving unit, and transforming the intermediate frequency signal into a baseband signal to be provided to the main control module and the digital signal processing module; the digital signal processing module is used for achieving usable frequency searching and frequency optimizing, selecting an idle channel as a local optimal frequency through perceiving a frequency spectrum in a set frequency range, and selecting a sky wave usable frequency range through estimating the maximum usable frequency and the minimum usable frequency of the sky wave channel; the main control module is used for monitoring the working state, the usable frequency range, the optimal frequency and the frequency spectrum energy of the short-wave frequency searching device, presetting a communication frequency range or communication frequency and realizing man-machine interaction and controlling external devices; the interface module is used for providing a video interface, a remote control interface, a data communication interface, a GPS interface and a network interface; and the power supply module is used for providing a DC power for each module, device and unit.

Description

technical field [0001] The present invention relates to the communication field, in particular to a short-wave frequency search device and a control method thereof. Background technique [0002] For a long time, there have been great difficulties in the selection of communication frequencies in the short-wave frequency band. On the one hand, the short-wave channel has time-varying characteristics caused by changes in solar activity. Resources are dwindling. There has been a lack of effective monitoring and control means to track changes in shortwave channels in real time and provide communication organizations with the best available frequencies to ensure the smooth flow of shortwave communications. The key issues to be solved in the future development of available HF channels are HF channel fast search and link building, especially in HF sky-wave communications. [0003] The purpose of the present invention is to provide a reliable means of frequency optimization for the ...

AI Technical Summary

Problems solved by technology

[0002] For a long time, there have been great difficulties in the selection of communication frequencies in the short-wave frequency band. On the one hand, the short-wave channel has time-varying characteristics caused by changes in solar activity. dwindling resources

Real-time tracking of short-wave channel changes, providing communication organizations with the best available frequency to ensure the smooth flow of short-wave communication has been lacking more effective monitoring and control means

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