中国科学院国家空间科学中心机构知识库
Advanced  
NSSC OpenIR  > 微波遥感部  > 期刊论文
题名: Performance Analysis of Circular Antenna Array for Microwave Interferometric Radiometers
作者: Wu, Ji; Zhang, Cheng; Liu, Hao; Yan, Jingye
作者部门: 微波遥感部
通讯作者: Zhang, C (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
关键词: Antenna arrays ; circular arrays ; microwave radiometry ; synthetic aperture imaging
刊名: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN号: 0196-2892
出版日期: 2017
卷号: 55, 期号:6, 页码:3261-3271
收录类别: SCI
项目资助者: Natural Science Foundation of China [41675035] ; National High Technology Research and Development Program (863 program) of China [2013AA122701]
英文摘要: The microwave interferometric radiometer (MIR) is a passive sensor using synthetic aperture technique for microwave remote sensing. It uses a thinned antenna array to replace the traditional large real aperture antenna, so as to reduce the antenna size, weight, and manufacturing difficulty, and further increase the spatial resolution of the instrument. The antenna array configuration is the first concern for the MIR application. Various array configurations have been proposed. Among them the arrays with hexagonal sampling grid such as the Y-shaped and hexagonal arrays have drawn more attention because of the higher sampling efficiency. However, they do not have the best performance in radiometric sensitivity and radio frequency interference (RFI) mitigation. This paper presents the detailed analysis of the circular array performance and compares it with the Y-shaped and hexagonal arrays. Based on the early developed theory about the radiometric resolution, two new factors named as sampling sensitivity factor and uncertainty factor are first introduced and defined in this paper, which can be used to quantitatively characterize the array performance. The main beam efficiency of the MIR is also redefined to prevent it being uncomfortably greater than unity but still keep a physical significance. Numerical simulations with analysis are finally implemented to verify the theoretical results and also to demonstrate the superiority of the circular array in terms of radiometric sensitivity and RFI mitigation.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6002
Appears in Collections:微波遥感部_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
201707869313.pdf(4066KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wu, Ji]'s Articles
[Zhang, Cheng]'s Articles
[Liu, Hao]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wu, Ji]‘s Articles
[Zhang, Cheng]‘s Articles
[Liu, Hao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 201707869313.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院国家空间科学中心 - Feedback
Powered by CSpace