Design of data transmission system for speed measurement radar between ARM and FPGA based on embedded Linux

Based on embedded Linux system, data transmission system for weapon's exterior ballistic speed measurement radar is studied based on the ARM Cortex-A9, communication interface is designed based on ARM and FPGA, the specific hardware design and the character device driver design are proposed, using interrupts and DMA technology. Data can be transferred high-speed and correctly, the test result shows that the system works stable and has a good real-time performance.