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| G矩阵修正法在一维综合孔径微波辐射计成像中的应用 | |
| Alternative Title | The Application of the G-matrix Modification Methods to the Imaging of the 1-D Synthetic Aperture Microwave Radiometer |
| 张爱丽; 刘浩; 武林; 牛立杰; 张成; 陈雪; 吴季 | |
| Source Publication | 电子与信息学报
 |
| 2019 | |
| Volume | 41Issue:11Pages:2632-2638; AR:1009-5896(2019)41:11<2632:GJZXZF>2.0.TX;2-7 |
| ISSN | 1009-5896 |
| Language | 中文 |
| Keyword | 综合孔径辐射计 成像算法 G矩阵 旁瓣恶化 Synthetic aperture radiometer Imaging algorithm G-matrix Side-lobed degradation |
| Abstract | 1维综合孔径微波辐射计通常会采用G矩阵模型法来实现亮温图像的重建。对于1维辐射计系统,成像过程主要包含:辐射计仪器观测2维全视场的目标场景亮温,得到1维的可见度函数采样值,再通过对系统参数矩阵G求逆来实现目标场景的1维图像重建。由于1维辐射计系统的采样基线只分布在空间频率域的1个维度上,所以在图像重建过程中,需要实现矩阵G从2维到1维的转换。对此,该文提出了两种适用于1维综合孔径微波辐射计成像的G矩阵修正方法。并针对目前已经完成的8单元辐射计地面样机系统和目前正在研制的10单元盐度计样机系统,通过理论分析和仿真实验,验证了G矩阵修正法对1维综合孔径微波辐射计成像结果的改善效果,以及对天线方向图旁瓣恶化所引入成像误差的有效抑制。 |
| Other Abstract | The G-matrix model method is usually used to achieve the brightness temperature reconstruction for the one-Dimensional(1-D) synthetic aperture microwave radiometer system. For the 1-D radiometer system,the imaging process mainly includes: the radiometer instrument observes the full field of view of the 2-D target scene maps, and obtains the 1-D samples of the visibility, and then inverts the system parameter matrix G to realize the reconstruction of the 1-D image of the target scene. Since the system sampling baselines are only distributed in the 1-D of the spatial frequency domain, in the process of the brightness temperature image reconstruction, the matrix G needs to realize 2-D to 1-D conversion. Therefore, two G-matrix modification methods are proposed to improve the imaging quality for the 1-D synthetic aperture microwave radiometer. For the 8-element ground radiometer prototype system and the 10-element salinity radiometer system, theoretical analysis and simulation experiments have verified that the G-matrix modification methods proposed in this paper can effectively improve the imaging results, and can effectively suppress the imaging error caused by the side-lobed degradation of the antenna patterns. |
| Indexed By | CSCD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/7465 |
| Collection | 中国科学院国家空间科学中心 |
| Affiliation | 1.张爱丽, 中国科学院国家空间科学中心 2.中国科学院大学, 北京 3.北京 100190 4.100049, 中国. 5.吴季, 中国科学院国家空间科学中心 6.中国科学院大学, 北京 7.北京 100190 8.100049, 中国. 9.刘浩, 中国科学院国家空间科学中心, 北京 100190, 中国. 10.武林, 中国科学院国家空间科学中心, 北京 100190, 中国. 11.牛立杰, 中国科学院国家空间科学中心, 北京 100190, 中国. 12.张成, 中国科学院国家空间科学中心, 北京 100190, 中国. 13.陈雪, 中国科学院国家空间科学中心, 北京 100190, 中国. 14.Zhang Aili, National Space Science Center, Chinese Academy of Sciences 15.University of Chinese Academy of Sciences, Beijing 16.Beijing 100190 17.100049. 18.Wu Ji, National Space Science Center, Chinese Academy of Sciences 19.University of Chinese Academy of Sciences, Beijing 20.Beijing 100190 21.100049. 22.Liu Hao, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China. 23.Wu Lin, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China. 24.Niu Lijie, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China. 25.Zhang Cheng, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China. 26.Chen Xue, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China. 27.liuhao@mirslab.cn |
| Recommended Citation GB/T 7714 | 张爱丽,刘浩,武林,等. G矩阵修正法在一维综合孔径微波辐射计成像中的应用[J]. 电子与信息学报,2019,41(11):2632-2638; AR:1009-5896(2019)41:11<2632:GJZXZF>2.0.TX;2-7. |
| APA | 张爱丽.,刘浩.,武林.,牛立杰.,张成.,...&吴季.(2019).G矩阵修正法在一维综合孔径微波辐射计成像中的应用.电子与信息学报,41(11),2632-2638; AR:1009-5896(2019)41:11<2632:GJZXZF>2.0.TX;2-7. |
| MLA | 张爱丽,et al."G矩阵修正法在一维综合孔径微波辐射计成像中的应用".电子与信息学报 41.11(2019):2632-2638; AR:1009-5896(2019)41:11<2632:GJZXZF>2.0.TX;2-7. |
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