NSSC OpenIR  > 微波遥感部
Alternative TitleDesign of Twenty-four Channels Digital Correlation in Synthetic Aperture Radiometer
陆浩; 王振占; luhao0408@126.com
Source Publication遥感技术与应用
Keyword合成孔径辐射计 现场可编程门阵列 高速模数转换器 数字相关 欠采样
Abstract针对合成孔径辐射计中存在的相关器单元过于复杂、不易于星载应用的问题,提出了一种新型数字相关系统设计方法。利用新一代大规模可编程门阵列FPGA-Virtex5和12片高速四通道的模数转换器AD9287实现了24个极化通道在100MHz采样率下的复相关运算,量化精度为8 bit。详细介绍了系统结构、接口电路和软件实现,解决了合成孔径辐射计相关系统体积、功耗和硬件复杂程度过大的问题。
Other AbstractThe synthetic aperture radiometer needs to complete correlations of many different channels.To solve the problem that the correlator unit of synthetic aperture radiometer is becoming so complex that it is not convenient for the implementation of spaceborne radiometer,a novelty design of digital correlator is given.Digital correlator is the main part of the synthetic aperture radiometer.The technology of new FPGA-Virtex5 and twelve high-speed analog-digital converter AD9287 is used to complete correlation of twenty-four polarization channels at 100 MHz sampling rate with 8 bit resolution.All the self-and cross-correlation calculations are processed at the same time in FPGA.The program can be easily erased to change the important parameters such as integration time.Structure of the system,interface circuit and software method are introduced in detail.The problem of bulk,power and complex correlation are all solved.Novel correlator with more sampling rate and more resolution can be designed based on the template given in the paper.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
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Document Type期刊论文
Corresponding Authorluhao0408@126.com
Recommended Citation
GB/T 7714
陆浩,王振占,luhao0408@126.com. 合成孔径辐射计24通道数字相关器设计[J]. 遥感技术与应用,2011,26(3):283-286.
APA 陆浩,王振占,&luhao0408@126.com.(2011).合成孔径辐射计24通道数字相关器设计.遥感技术与应用,26(3),283-286.
MLA 陆浩,et al."合成孔径辐射计24通道数字相关器设计".遥感技术与应用 26.3(2011):283-286.
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