二维综合孔径微波辐射计圆环结构天线阵及其稀疏方法
文献类型：期刊论文
| 作者 | 何宝宇 ; 吴季 |
| 刊名 | 电子学报
 |
| 出版日期 | 2005 |
| 卷号 | 33期号:9页码:1607-1610 |
| 关键词 | 二维综合孔径微波辐射计 稀疏天线阵 退火算法 |
| ISSN号 | 0372-2112 |
| 其他题名 | Optimization on Circular Thinned Array for Two2DimensionalSynthetic Aperture Microwave Radiometer |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | 本文介绍了圆环天线阵二维综合孔径微波辐射计的测量原理和反演算法,并通过模拟退火算法讨论了两种二维综合孔径微波辐射计圆环阵的稀疏方案,一种方案利用天线旋转,在半圆周上稀疏天线;另一种方案通过将空间频率采样点的均匀分布作为优化的约束条件,在全圆周上稀疏天线.结果显示两种设计较传统设计均有改进之处.对于半圆周天线而言,在积分时间允许的条件下,通过天线旋转与分时测量,天线阵可进一步稀疏.对于全圆周天线而言,与Y形天线阵结构相比,在同样的空间频率覆盖范围内,全圆周天线阵使天线单元数达到了最优. |
| 英文摘要 | The study on image theory and the retrieving algorithm of two2dimensional synthetic aperture microwave radiometer with circular antenna array is presented.Based upon simulated annealing algorithm ,we will discuss two solutions of obtaining the ideal thinned array.One solution uses half-circle configuration with very much reduced number of elements and taking an image by rotating the array. The other solution selects element positions around the full circle to provide a roughly uniform coverage in the spatial frequency domain.The results show that both solutions have improved characteristics over the conventional design. For the half2circle case ,if the integration time allows ,with the rotation of the array and the limited time2shared measurements the number of elements can be further reduced to a great extent. For the full2circle case ,the array can be thinned up to the least redundant number ,which can never be reached by the most popular Y shaped array configuration under same spatial frequency coverage constraint. |
| 学科主题 | 微波遥感 |
| 收录类别 | CSCD |
| 语种 | 中文 |
| CSCD记录号 | CSCD:2155033 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/2050]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | 何宝宇,吴季. 二维综合孔径微波辐射计圆环结构天线阵及其稀疏方法[J]. 电子学报,2005,33(9):1607-1610. |
| APA | 何宝宇,&吴季.(2005).二维综合孔径微波辐射计圆环结构天线阵及其稀疏方法.电子学报,33(9),1607-1610. |
| MLA | 何宝宇,et al."二维综合孔径微波辐射计圆环结构天线阵及其稀疏方法".电子学报 33.9(2005):1607-1610. |
入库方式： OAI收割
来源：国家空间科学中心
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