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多相机系统中高速串行图像数据复接方法
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作者 董小静 危峻 +3 位作者 田犁 徐志鹏 王凯 周倩婷 《红外技术》 CSCD 北大核心 2011年第3期163-166,共4页
由于单台推扫式相机(或成像光谱仪)视场较窄,通常采用多个相机模块进行视场拼接。针对相机的图像数据具有分辨率高、数据量大特点,提出了一种基于CCSDS的高速复接的传输方法。高速复接电路采用FPGA产生各种控制信号,选用TI的SN65LV1023... 由于单台推扫式相机(或成像光谱仪)视场较窄,通常采用多个相机模块进行视场拼接。针对相机的图像数据具有分辨率高、数据量大特点,提出了一种基于CCSDS的高速复接的传输方法。高速复接电路采用FPGA产生各种控制信号,选用TI的SN65LV1023和SN65LV1224串化解串芯片,把模拟的相机数据转化为一对LVDS差分信号输出。在接收端,用ADLink公司的PCI7300采集卡采集数据进入电脑,用VC++编写软件恢复图像数据。实验结果表明,高速复接电路能够高效可靠的传输图像数据并恢复数据时钟。 展开更多
关键词 高速复接 串化解串 时钟恢
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OpenFIow-Based Control Architecture for the Mobile FreeSpace Optical Networks
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作者 ZHAO Yongli GAO Lingnan YIN Xingbin YU Yue ZHANG Jie 《China Communications》 SCIE CSCD 2014年第8期65-72,共8页
Mobile free space optical networks have aroused much attention due to the ability of providing high speed connectivity over long distance using the wireless laser links,while requiring relatively high available bandwi... Mobile free space optical networks have aroused much attention due to the ability of providing high speed connectivity over long distance using the wireless laser links,while requiring relatively high available bandwidth resource and less energy consumption.However,maintaining the network with laserlinks is quite challenging due to a number of issues,such as the link fragility,the difficulty in pointingand tracking of the link,which also raises the great difficulty in the control of the network.In this paper,we present the methodology for the deployment of the mobile freespace optical networks based on our proposed OpenFlow-based control architecture.In addition,a new routing scheme is proposed and demonstrated on the testbed based on this control architecture.Delivery ratio,average delivery delay and time complexity are given to verify the performance of the OpenFlow-based control architecture. 展开更多
关键词 free space optical networks controlarchitecture Openflow routing scheme
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