Meteorological fax digital receiving system based on FPGA (Field Programmable Gate Array)

The invention provides a meteorological fax digital receiving system based on an FPGA (Field Programmable Gate Array). The meteorological fax digital receiving system comprises a digital down-conversion module, an FSK (Frequency Shift Keying) demodulation module, a meteorological fax signal identification module, a meteorological fax data framing module and a radio frequency interaction module. And the digital down-conversion module is used for extracting and filtering the sampling signal. And the FSK demodulation module is used for carrying out phase and frequency discrimination processing. And the weather fax signal identification module is used for carrying out signal identification according to the format of the signal. And the weather facsimile data framing module is used for framing the identified demodulation signals and sending the signals to the interior of the upper computer. And the radio frequency interaction module is used for carrying out radio frequency interaction with an upper computer, trans