Study On High-speed And Realtime Storage System For CCD Photogrammetric Image Data

Mapping and updating relief map and correlative map products is the necessary problem to be solved by the way of aviation or/and aerospace photogrammetric. High resolution mapping aviation or aerospace photogrammetric camera is the necessary condition for turning this situation. Based on the requirement of the stereo photogrammetric camera with the wide area CCDs, the purpose of this dissertation is to study high-speed image data transmission, real-timeimage compression and real-time image storage.On the basis of comparison between different schemes, a basic configuration of CameraLink is selected to implement the 62MBps data transmission, and the communication function of CameraLink is extended by CPLD technology. Therefore the parameters of three camera can be solely set, and improving the flexibility.To compress the photogrammetric image is necessary because of the character of high speed and large amount. Through analyzing the JPEG2000 standard, this dissertation provides the compression scheme based on the ADV202. It is proved that processing rate of 100MBps can be achieved by theory calculation and logic simulation.The goal of this dissertation is not only to compress remote sensing image, but also to reliably save the image. Data block (32MB) transfer rate of 47MBps, and whole disc sustained transfer rate of 20MBps are successfully achieved.The following conclusions can be achieved by the dissertation: CameraLink...