摘要
针对多谱段时间延迟积分电荷耦合器件（TDI—CCD）输出通道多的结构特点和工作频率高的应用要求，提出了一种多谱段TDI—CCD高速成像系统。采用单片可编程逻辑器件作为成像系统的控制核心，实现了视频处理器组的配置与控制以及12路数字视频信号的整合；采用高速集成视频处理器完成模拟输入电荷耦合器件（CCD）信号的视频处理和需精细调整相位的视频处理相关控制信号及水平转移信号的产生；采用高速集成驱动器实现高速低占空比信号的驱动。实验结果表明该系统满足设计要求，在像素时钟为20MHz时工作稳定正常，信噪比大于45dB，动态范围不低于58dB，可同时高速获取分辨率较高的全色图像和光谱信息丰富的多光谱图像。
To meet the multichannel and high operating frequency requirements of multispectral time-delayed integration charge-coupled device （TDI-CCD）, a multispectral TDI-CCD high-speed imaging micro-system is designed. Monolithic programmable logic device is employed as the imaging micro-system control core, to achieve the configuration and control of the video processor group and the integration of the 12-channel digital video signal. The high-speed integrated video processor inputs CCD signal and generates the video processing phase control signal and the level transfer signal. A high-speed integrated driver is used to drive the high-speed low-duty-cycle signal. Experimental results show that the system meets the design requirements and works stably and normally at the pixel clock of 20 MHz. The signal-to-noise ratio is greater than 45 dB and the dynamic range is no less than 58 dB. The imaging system can be used to acquire high-speed high-resolution panchromatic images and high spectral information multispectral images.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第F06期81-86,共6页
Acta Optica Sinica
基金
国家自然科学基金青年科学基金项目（61108066）和吉林省自然科学基金（201215107）资助课题.
关键词
成像系统
多谱段
时间延迟积分电荷耦合器件
高速成像
集成视频处理器
imaging systems
multispectral
time-delayed integration charge-coupled device
high speed imaging
integrated video processor
