FPGA design and realization of ground testing equipment bus interface for microwave remote sensor on satellite

The ground testing equipment is essential debugging and testing equipment for microwave remote sensor on satellite. The design and realization methods of ground testing equipment bus interface conversion circuit for FY-3 satellite and HY-2 satellite microwave radiometer and microwave scattermeter are expounded in this paper. FPGA technology, MCU technology and DDS technology are adopted in this ground testing equipment. The RS485 interface, RS422 interface, RS232 interface, LVDS bus interface conversion function are achieved.