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.