| Because of its widely application in military and civilian affairs, Synthetic Aperture Radar has received more and more recognition. So many countries devote much to develop high resolving power, multi-function, and entirely digital real-time imaging SAR system. Because of SAR's high speed development in recent years, the amount of SAR's data is increased quickly, the existing data transmission system can't full fit it anymore. It has been an emphasis to develop a high-speed data transmission system in SAR's development.This dissertation is based on the research work of the point-to-point high-speed fibre-optical data transmission system. Whereas fibre-optics will become the main transmission intermedium of information network in the future information times, it has been used in the transmission system because of its leading features of small transmission wastage, strong anti-interfere ability and high transmission speed. In this dissertation, we present a design scheme based on the others' work of using high-integrated FPGA to replace discrete components, and we also have developed a high-speed data transmission interface board based on CPCI bus. The advantages of the FPGA board include its compact structure, reliable stabilization and high efficiency.In this dissertation, we focus on the high-speed digital design and control scheme of data transmission. We must apply some technologies about high-speed PCB design to ensure the proper transmission due to the high series speed at 2.125Gbit/s. The control of data transmission is designed based on the feature of radar data and the resource of the FPGA so that we can ensure the proper transmission and realize higher data rate. |
