箭载图像压缩与存储系统设计与实现  

Design and Implementation of Compression and Storage System for Rocket-borne Image

作　　者：赵盼盼[1] 孟令军[1] 文波[1] 张晓春[1] 韩朝辉[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《实验室研究与探索》2015年第12期92-96,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金(61275166)

摘　　要：为实时监测火箭飞行过程中各部位关键动作的完成情况,设计了箭载图像的压缩与存储系统。设计中利用JPEG2000标准压缩芯片ADV212完成对箭载图像的有效压缩,压缩图像数据由发射机回传至地面遥测站,实现对火箭飞行状态的实时监控。同时利用Flash芯片完成对原始图像数据的高速存储,为后续分析提供可靠保证。FPGA作为系统主控,主要实现对各芯片的初始化及逻辑控制。实验结果表明,在保证压缩图像具有较高峰值信噪比的情况下,系统可将原始图像码流速率由240 Mb/s降至4.8 Mb/s,有效减轻了遥测系统无线传输带宽压力,且系统能够满足高清晰原始图像的全程高速存储。同时系统具有图像压缩比可调,存储器容量可扩展等优点。In order to monitor the completion of key actions in real-time during the rocket flight,a rocket-borne image compression and storage system is designed. The JPEG2000 standard compression chip ADV212 can achieve effective compression of rocket-borne image,compressed image data are transported to the telemetry station through the transmitter to realize real-time monitoring of the rocket flight state. At the same time,the Flash chip can complete high-speed storage of original image data,so can provide a reliable guarantee for the subsequent analysis. FPGA,as the main control system,mainly achieves to initialize and logically control each chip. The experiments show that,keeping the compressed images have a high signal to noise ratio,the system compresses 240 Mb / s original image,and outputs new image at the rate of 4. 8 Mb / s,relieves the pressure of wireless transmitted bandwidth effectively. The system can meets the high-speed storage of original image. The system also has the advantages of adjustable image compression ratio,expandable memory capacity and so on.

关 键 词：箭载图像 ADV212 图像压缩 存储 传输带宽 

分 类 号：TN919.8[电子电信—通信与信息系统]