| 基于流水线技术的数字下变频器设计优化 |
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| 引用本文： | 王倩,董晓龙,朱迪. 基于流水线技术的数字下变频器设计优化[J]. 遥感技术与应用, 2014, 29(1): 151-154. DOI: 10.11873/j.issn.1004|0323.2014.1.0151 |
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| 作者姓名： | 王倩 董晓龙 朱迪 |
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| 作者单位： | (1.中国科学院微波遥感技术重点实验室,中国科学院国家空间科学中心,北京 100190；;2.中国科学院大学,北京 100049) |
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| 基金项目： | 王倩（1985-）,女,山西洪洞人,博士研究生,主要从事微波散射计信号处理等研究。Email:freewings321@163.com。 |
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| 摘 要： | 数字下变频器(Digital Down Converter,DDC)是雷达数字接收机的重要组成部分,其功能是将数字化的雷达中频信号进行下变频至基带。DDC主要完成星载微波散射计的正交解调,滤波和降采样算法。出于星载应用对可靠性和芯片资源的要求,选择Actel基于FLASH技术的FPGA芯片,并采用基于流水线技术和简化的正交解调及分布式滤波的算法来实现DDC模块功能。
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| 关 键 词： | 数字下变频器 分布式算法 流水线技术 |
| 收稿时间： | 2012-10-12 |
Design and Optimization of Digital Down Converter based on Pipeline |
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| Wang Qian,Dong Xiaolong,Zhu Di. Design and Optimization of Digital Down Converter based on Pipeline[J]. Remote Sensing Technology and Application, 2014, 29(1): 151-154. DOI: 10.11873/j.issn.1004|0323.2014.1.0151 |
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| Authors: | Wang Qian Dong Xiaolong Zhu Di |
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| Affiliation: | (1.The CAS Key Laboratory of Microwave Remote Sensing,Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100190,China;;2.University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Digital Down Converter(DDC) is an important part of the radar-receiver,and its function is to convert the frequency of the digital signal received to base|band.In this paper,main function is to complete the quadrature demodulation,filtering and the down sampling.The Actel FPGA chip based on Flash is chosen as the security and the resource concern.A new method based on pipeline technology,simplified quadrature demodulation and distributed filter arithmetic is used to implement the DDC module. |
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| Keywords: | DDC DA Pipeline |
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