Based on past experience of radar signal processing, the new way using Cortex-A8 and FPGA is proposed in this paper. The related hardware which based on the cortex-A8 and FPGA platform system of TI Corporation is mainly introduced, the specific design methods are presented, and the design principles and analysis are expatiated. At the same time, the brief analysis of the features and benefits based on the VxWorks real-time operating system is given. The management and control of digital communication in radar system are completed, and the digital signal processing is realized