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综合孔径微波辐射计信道误差分析与标定
Alternative TitleAnalysis and Calibration of the Channels Error of Synthetic Aperture Radiometer
刘浩; 吴季; 吴琼; 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
2005
Volume33Issue:3Pages:402-406
ISSN0372-2112
Language中文
Keyword综合孔径微波辐射计 信道不平衡 串扰 互耦 定标
Abstract本文首先建立了综合孔径微波辐射计的信道模型,在此基础上分析了信道的幅度相位不平衡以及信道间串扰对反演亮温的影响,并给出了系统仿真结果.本文还提出了一种新的系统定标方案,与传统定标方法相比,该方法可以非常方便的获取高精度的系统调制G矩阵用于亮温反演.
Other AbstractTheoretical channels model of synthetic aperture radiometer are presented.Based on this model ,how amplitude imbalance ,phase imbalance and mutual coupling between the different receiving channels effect brightness temperature retrieving is analyzed.The computer simulation results are also presented ,in which the cause of the along-track streaks usually appeared in the retrieved image is identified.In addition,a new system calibration approach is introduced to solve this problem: using digital I2Q vector modulators to simulate the point source in the antenna range ,we can get more accurate GMatrix to retrieve the brightness temperature image.This new approach,as compared with the existing calibration methods ,is especially suitable for in situ use.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:8[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2041
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
刘浩,吴季,吴琼,等. 综合孔径微波辐射计信道误差分析与标定[J]. 电子学报,2005,33(3):402-406.
APA 刘浩,吴季,吴琼,&北京8701信箱.(2005).综合孔径微波辐射计信道误差分析与标定.电子学报,33(3),402-406.
MLA 刘浩,et al."综合孔径微波辐射计信道误差分析与标定".电子学报 33.3(2005):402-406.
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