Development Of Laser/radio Composite Fuze Data Acquisition Recorder

The laser fuze is easy to be interfered by cloud and fog,and the radio fuze is easy to be interfered by chaff cloud,both of which will lead to false alarm.Using laser / radio compound fuze,we can give full play to their advantages and improve the anti-jamming ability of fuze through information fusion.In order to meet the needs of information fusion and signal processing algorithm research of laser radio compound fuze,this paper studies the synchronous acquisition technology of multi-channel laser echo pulse signal and Doppler signal of compound fuze.The main work is as follows:Based on the working principle of perimeter laser fuze and pulse Doppler radio fuze,the echo characteristics of laser fuze and radio fuze are analyzed,and the overall scheme of data acquisition of composite fuze based on FPGA + STM32 as the main controller is designed.The recorder uses FPGA + STM32 as the main controller to synchronously collect two channels of radio fuze echo and eight channels of laser fuze echo pulse,uses SDRAM for data buffer,realizes large capacity non-volatile data storage through nandflash,and can be uploaded to the upper computer for display through the high-speed Ethernet interface.The hardware circuit of the system is designed,including power circuit design,analog data sampling circuit,FPGA circuit design,STM32 circuit design,storage circuit design,data upload circuit design,etc.The data acquisition technology of pulse parameters based on FPGA is studied,and the logic control of FPGA is designed.The embedded software and upper computer software of STM32 are developed.Through simulating the pulse echo of laser fuze and the Doppler echo of radio fuze,the function and performance index of the data acquisition recorder are verified.