电子学报2018，Vol.46Issue(1)：185-189,5.DOI:10.3969/j.issn.0372-2112.2018.01.025
一种基于极化线栅的微波辐射计变温定标源研究
Study on Polarized Wire Grid for Microwave Radiometer Calibration
董帅 1王振占 2王新彪 1贺秋瑞 1李娇阳1
作者信息
- 1. 中国科学院国家空间科学中心,北京100190
- 2. 北京无线电测量研究所,北京100854
- 折叠
摘要
Abstract
The quasi optical polarization separation principle is introduced.The new type of wire grid calibration source consisting of polarized wire grid,artificial black body,and cold sky signal is designed.Through the rotation of the polarized wire grid,the radiation energy of artificial black body and cold sky is mixed.The wire grid calibration source provides varying temperature signals,and solves the problem of low-frequency radiometer calibration.A measured reflectivity of 98.4％ and transmittance of 99.9％ at L-band is demonstrated.The brightness temperature dynamic range of wire grid calibration source is between 8K and 248K,which meets the design goal.关键词
辐射计/定标/极化线栅/准光技术Key words
radiometer/calibration/polarized wire grid/quasi-optical technology分类
信息技术与安全科学引用本文复制引用
董帅,王振占,王新彪,贺秋瑞,李娇阳..一种基于极化线栅的微波辐射计变温定标源研究[J].电子学报,2018,46(1):185-189,5.
