Satellite communication gateway station signal demodulation processing board

The invention discloses a satellite communication gateway station signal demodulation processing board comprising an intermediate-frequency signal receiver. The intermediate-frequency signal receiver is connected with at least two A/D converters, wherein one A/D converter is directly connected with an FPGA unit, and the rest A/D converters are connected with a DDC (digital down converter). The DDC is connected with the FPGA unit, and the FPGA unit is connected with a DSP unit and a communication interface. The FPGA unit includes a numerically controlled oscillation module, the numerically controlled oscillation module is connected with a cascaded integrator comb filter module, the cascaded integrator comb filter module is connected with a half-band filter module, and the half-band filter module is connected with a channelized poly-phase filter bank module. According to the satellite communication gateway station signal demodulation processing board of the invention, the function of the DDC (digital down conve