基于FPGA的星载成像系统设计  

Design of satellite-borne imaging system based on FPGA

作　　者：祝庆贺 熊文卓[2] 贺小军 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130000 [2]中国科学院大学,北京100049 [3]长光卫星技术有限公司,吉林长春130000

出　　处：《现代电子技术》2017年第15期64-67,共4页Modern Electronics Technique

基　　金：中国科学院"青年创新促进会"专项基金(Y62139W160)

摘　　要：针对卫星上相机成像噪音高、灵敏度低以及国外垄断的问题,提出一种基于FPGA和国产CMOS图像传感器的空间相机成像系统设计,应用于小卫星的空间成像。系统采用高分辨率的国产CMOS图像传感器作为成像元件,使用Spartan-6系列的FPGA作为主控芯片,CMOS输出图像信号进入FPGA进行缓存和排序,再通过Camera Link接口发送到上位机。实验结果表明,系统能采集到2 048×1 024像素大小的图片,图像信噪比高于36 d B,优于CMOS传感器技术手册提供的参考值31 d B,成像效果良好,能满足小卫星的空间成像要求。Since the camera imaging in satellite has high noise and low sensitivity, and is monopolized by foreign countries, a design of spatial camera imaging system based on FPGA and domestic CMOS image sensor is put forward, and applied to the space imaging of small satellites. The domestic high-resolution CMOS image sensor is taken as the imaging component of system. The FPGA of Spartan-6 series is used as the main control chip of system. The image signal output by CMOS is entered into FPGA for catching and sorting, and send to the upper computer through CameraLink interface. The experimental results show that the system can acquire the image with 2 048xl 024 pixels, its SNR （signal-to-noise ratio） is higher than 36 dB, which is better than the reference value of 31 dB provided with CMOS sensor technical manual, the imaging effect is better, and can meet the space imaging requirement of small satellites.

关 键 词：FPGA 高分辨率 CMOS图像传感器 卫星成像 

分 类 号：TN915-34[电子电信—通信与信息系统] TP271[电子电信—信息与通信工程]