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合成孔径辐射计多路高阶数字复相关器方案研究
Alternative TitleRe search on Multi2Element s and Multi2Levels DigitalComplex2Correlator of Synthetic Aperture Radiometer
闫敬业; 吴季; 张升伟; 姜景山; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication电子学报
2003
Volume31Issue:9Pages:1411-1414
ISSN0372-2112
Language中文
Keyword合成孔径 辐射计 欠采样 数字下变频 数字相关
Abstract本文针对目前合成孔径辐射计中存在的相关器单元过于复杂,难以星载应用的问题,提出了一种新的数字相关方法.借鉴了软件无线电中的数字接收机技术,利用大规模可编程门阵列(FPGA),用一块芯片来实现功率分配和大量复相关器的工作,实现了片上系统(SOC),解决了多天线单元合成孔径辐射计相关器系统中存在的体积,重量,功耗和硬件复杂程度过大的问题.通过仿真表明,多路高阶数字相关器系统得到的天线阵列的干涉方向图与模拟相关器系统得到的干涉方向图基本一致,证明该方案可行.
Other AbstractThis paper is focused on the problem that the analog correlator unit of synthetic aperture radiometer is becoming too complex ,so that it has an inverse effect on the implementation of spaceborne synthetic aperture radiometer. There is a new digital correlator ,which uses the technology of digital receiver that has already been used in soft radio.Due to the fact that the digital correlators are realized with the help of analog2digital converter (ADC) chips and the FPGA technology ,the realized volume ,mass ,power consumption and complexity turn out to be greatly reduced compared with those of the analog correlators. Simulations show that the resolution of ADC has an influence on the synthesized antenna patterns ,but this can be neglected if more than 2 bits are used
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1913
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
闫敬业,吴季,张升伟,等. 合成孔径辐射计多路高阶数字复相关器方案研究[J]. 电子学报,2003,31(9):1411-1414.
APA 闫敬业,吴季,张升伟,姜景山,&北京8701信箱.(2003).合成孔径辐射计多路高阶数字复相关器方案研究.电子学报,31(9),1411-1414.
MLA 闫敬业,et al."合成孔径辐射计多路高阶数字复相关器方案研究".电子学报 31.9(2003):1411-1414.
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