Research On High-speed Data Recorder Of Synthetic Aperture Radar

Because of its widely application in military and civilian affair, Synthetic Aperture Radar has received more and more recognition. So many countries devote much to develop high resolving power, multi-function, entirely digital real-time imaging SAR system. Because SAR's high-speed development in recent years, the amount of SAR's data is increased quickly, the existing data recorder cannot full fit it anymore. It has been an emphases in SAR's development that how to develop a kind of more capacity and faster record speed.This paper is based on the research work of the SAR's data recorder. We introduce the basic knowledge and the development of SAR firstly. And then the development and interface of the data recorder is introduced. Base on the research of the data recorder and conform to modularization, we develop a kind of real-time data recorder based on FAS466. We do lots of research work from theory and practice in this paper.The paper introduces a kind of real-time data recorder based on the other's work. The recorder's specialty is that adopting high-speed DMA interface, working without PC, small cubage and high reliability. Because of its separate structure between microprocessor bus and DMA bus, the recorder achieves higher data transfer rate.The paper introduces the development of digital data recorder's storage technique, the development of hard disk and RAID technique.The paper introduces high-speed data recorder that has been used in projects. Through the comparison and summarization, we point out its future.