Morse code radio frequency signal receiving and identifying method and device and analog radio station host

Abstract

The invention relates to the technical field of radio, and provides a Morse code radio frequency signal receiving and identifying method and device and an analog radio station host, which are used forimproving the decoding accuracy. The method comprises the following steps: carrying out edge capture on a received 48KHz bit stream to find a rising edge and a falling edge of a corresponding Morse code message; timing each rising edge and each falling edge according to a preset 64S timer; caching the time of each rising edge and each falling edge; further establishing a cached high-low level duration time table; and calculating a dot code time length, a code division time length, a code interval, a character interval and a word interval time length according to the high-low level duration time table so as to determine a decoding time window, so that an ASCII code of a character corresponding to the 48KHz bit stream is inquired according to a preset Morse code ASCII code lookup table. According to the invention, the problem of low Morse code identification and decoding accuracy of the Morse code radio frequency signals received by the analog radio station host and sent manually is solved.

Description

technical field [0001] The invention belongs to the field of radio technology, and in particular relates to a method and device for receiving and identifying Morse code radio frequency signals and an analog radio host. Background technique [0002] In the telegraph training system, due to the difference in proficiency and usage habits of the telegraph personnel, the code rate of the Morse code RF signal sent manually and the actual duration of each signal are very different, and the ratio is not standard. It will continue to change, so the Morse code recognition and decoding accuracy of the Morse code RF signal received by the analog radio host is not high. Contents of the invention [0003] In view of this, the embodiment of the present invention provides a method and device for receiving and identifying Morse code radio frequency signals, and an analog radio host, so as to solve the problem of Morse code radio frequency signals received manually by analog radio hosts in ...

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a method and device for receiving and identifying Morse code radio frequency signals, and an analog radio host, so as to solve the problem of Morse code radio frequency signals received manually by analog radio hosts in the prior art. There is a problem of low accuracy in code recognition and decoding

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