Satellite And Ground Sar Data Acquisition And Storage System

Synthetic aperture radar (SAR) is an active microwave remote sensor, which has the high azimuth resolution by using the theorem of synthetic aperture. Because of its widely application in military and civilian Synthetic Aperture Radar has received more and more recognition. SAR develops rapidly in recent years, the data acquisition and storing system, as the important part of SAR system, was requested the more and more high working performance. Some data recording system cannot suit the higher requirement any more.In SAR system, the in-phase and quadrate echoes must be sampled simultaneity and stored for a long-time. Because of the limitation of hardware, only the available echoes can be stored. The receiver must detect the position of available echoes in satellitic SAR. In this paper, two method to detect the position of available echoes in the integrity PRI was present. A high-speed data acquisition and storing system, which is based on SATA disks and used in SAR, is introduced in this dissertation. FPGA is used to control the system's working time. The SMT387 module changes the data's format into which is applicable in FAT32 file system, and it will finish the SATA disk's controlling.The primary work in this dissertation:Two method was present to detect the radar echoes by slide-window.The system's construction and design proposal was introduced form every part of itThe central controlling and system working flow was completed, the controlling of SHB bus was realized.The development of storage module was completed, valid echoes detecting, FAT32 format conversion.