| 毫米波摄相机的多通道精确同步信号采集系统设计 |
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| 引用本文： | 谭渊,杨勇,孙江平,袁乃昌. 毫米波摄相机的多通道精确同步信号采集系统设计[J]. 国外电子元器件, 2007, 0(11): 55-57 |
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| 作者姓名： | 谭渊 杨勇 孙江平 袁乃昌 |
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| 作者单位： | 国防科技大学,微波技术发展中心,湖南,长沙,410073 |
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| 摘 要： | 根据毫米波成像系统对各接收单元相位的要求,介绍了一种硬件采用PCI-6133采集卡,软件采用LabVIEW编写其配置控制程序的精确同步信号采集系统.在系统的输出端增加了数字下变频模块,目的是将信号变频至零中频附近,为后续信号处理奠定基础.应用证明,同步信号采集系统具有较高的同步性能,满足成像处理要求.
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| 关 键 词： | 毫米波成像 同步采集 LabVIEW 数字下变频 PIC-6133 |
| 文章编号： | 1006-6977（2007）11-0055-03 |
| 收稿时间： | 2007-06-05 |
| 修稿时间： | 2007-06-05 |
Design of multi-channels synchronous signal acquisition system in millimetric wave camera |
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| TAN Yuan,YANG Yong,SUN Jiang-ping,YUAN Nai-chang. Design of multi-channels synchronous signal acquisition system in millimetric wave camera[J]. International Electronic Elements, 2007, 0(11): 55-57 |
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| Authors: | TAN Yuan YANG Yong SUN Jiang-ping YUAN Nai-chang |
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| Affiliation: | Microwave Center, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Considering the rigid need of phase between each receive cell in microwave imaging system, a synchronous signal acquisition system is described which hardware is based on PCI-6133 and software is based on LabVIEW.In order to transform the signal frequency to a low intermediate frequency, a module of DDC is appended to the output of this system, which also serves for DSP later. |
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| Keywords: | millimetric wave imaging synchronous acquisition LabVIEW DDC PIC-6133 |
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