基于FPGA的卫星图像模拟源系统设计  

Design of Simulative Satellite Image Resource System Based on FPGA

作　　者：鲁琴[1] 杜列波[1] 魏鹏[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《测试技术学报》2009年第3期261-265,共5页Journal of Test and Measurement Technology

基　　金：国家高技术研究发展计划863基金资助项目(2006AA701121)

摘　　要：作为星上的有效载荷,星载图像压缩设备必须经过严格的测试后方能投入使用.如果在每一次的测试过程中,压缩设备均与其前端体积庞大的CCD相机系统对接,势必会造成时间和物力的浪费.为了保证星载图像压缩设备研发和测试的顺利进行,本文设计了一套卫星图像模拟源系统,以模拟多路CCD相机数据.系统基于FPGA和LAN91C111搭建,可以在联网和自动两种工作模式下工作.为了满足17路图像数据同时发送的要求,采用了MicroBlaze和VHDL联合编程实现SDRAM的高速读写控制.测试表明,该图像模拟源能满足各项设计指标.Being the main payload on satellite,spaceborne remote sensing image compression system needs a series of strict testing.It would be a great waste of time and money if docking the real large CCD camera system with the compression system during the testing.To guarantee the development and testing of the spaceborne remote image compression system,a simulative satellite image resource system,which is used as the tool to simulate multiple CCD camera signals,is designed in this paper.The system hardware is based on the FPGA and LAN91C111 and can work under auto or controlled condition.To satisfy the large-capacity and high-speed image data access need,a method based on MicroBlaze and VHDL is proposed to control the SDRAM.Tests show that the designed simulative satellite image resource system has been running with satisfactory results.

关 键 词：星载图像 模拟源 FPGA MICROBLAZE SDRAM 

分 类 号：TN919.8[电子电信—通信与信息系统]