| 微波散射计数字接收机DDC的设计与实现 |
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| 引用本文： | 易雪燕,杨斌利,牛亚莉. 微波散射计数字接收机DDC的设计与实现[J]. 空间电子技术, 2009, 6(2): 67-72 |
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| 作者姓名： | 易雪燕 杨斌利 牛亚莉 |
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| 作者单位： | 西安空间无线电技术研究所空间微波技术国家级重点实验室; |
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| 摘 要： | 微波散射计是一种用于测量目标后向散射系数的有源微波遥感器。文章介绍了作为微波散射计重要部件之一的数字化中频接收机，指出数字下变频在微波散射计数字化中频接收机的数字化和软件化过程的作用。根据微波散射计数字化中频接收机工作机理与数字下变频原理，结合Matlab算法仿真技术，设计并实现了基于FPGAIP核的数字下变频。仿真与实测结果表明：基于FPGAIP核设计实现的数字下变频能够满足微波散射计数字化中频接收机性能指标要求，并且具有灵活性、通用性、修改参数方便等特点。
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| 关 键 词： | 微波散射计 中频数字接收机 FPGA 数字下变频 |
Design and Implementation of DDC in Digitized Receiver of Microwave Scatterometer |
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| Yi Xueyan Yang Binli Niu Yali. Design and Implementation of DDC in Digitized Receiver of Microwave Scatterometer[J]. Space Electronic Technology, 2009, 6(2): 67-72 |
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| Authors: | Yi Xueyan Yang Binli Niu Yali |
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| Affiliation: | ( Xi＇an Institute of Space Radio Technology, Xi＇an 710000, China) |
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| Abstract: | Microwave scatterometer is a kind of active microwave remote sensor which is used to measure back-scatter coefficient of target.This paper introduces the digitized intermediate frequency receiver that is one importance components of Microwave scatterometer,and points out that digital Down Converter(DDC) plays a key role in the digitized and software oriented process of the digitized intermediate frequency receiver.Based on work principium of the digitized intermediate frequency receiver of Microwave scatter... |
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| Keywords: | Microwave scatterometer Digitized intermediate frequency receiver FPGA Digital down converter |
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