Multi-channel high-speed data acquisition system of SAR on FPGA

Signal acquisition system is the key part of synthetic aperture radar (SAR), due to the high resolution as well as the development of processor, the acquisition and transmission of the signal is exponential growth. In order to solve the high-speed process of the large amount of data, real-time and other issues, the study of acquisition of signals has an important practical significance. FPGA is very suitable to be applied in high-speed, real-time signal process because of its characteristics. In this paper, we firstly introduce the composition of a typical SAR acquisition system based on FPGA, and then briefly introduce the function and development process of each module of the system and introduce the mainstream programs used in several key modules and show the real FPGA resource utilization rate after the implementation of the acquisition system.