期刊文献+

一种常温条件下的微波冷噪声源设计 被引量:2

Design of an active cold noise source under the normal temperature condition
下载PDF
导出
摘要 针对传统微波噪声源在提供低亮度温度噪声时需要制冷的局限性,介绍了一种工作于常温条件下的新型微波冷噪声源器件.以"冷场效应管"原理为基础,给出了双端口微波网络在输出端口端接负载情况下的输入端口处噪声温度模型.提出了一种有源微波冷噪声源的设计方法,并选用高电子迁移率场效晶体管为核心研制了L波段有源微波冷噪声源器件.采用L波段微波辐射计系统对该器件进行测试,在室温环境下(29℃),该器件在1 400~1 430MHz的工作带宽内可产生低至85.3K的亮度温度.测试结果表明,该有源微波冷噪声源可在无须制冷的常温环境下为辐射计系统提供稳定的内定标低点,解决了传统冷噪声源受制于液氮制冷设备的问题. In view of the limitation of the traditional microwave noise source in providing low brightness temperature noise, a new type of microwave cold noise source device is introduced. Based on the "ColFET" principle, the 2-port microwave network with output-port terminated noise temperature model is given. A design procedure of the active cold noise source (ACNS) is described, and an L-band ACNS using the GaAs high electron mobility transistor is reported. A noise injection radiometer has been developed to perform the measurements. The L-band ACNS works at 302 K, and exhibits a noise temperature of less than 85.3 K in the 1400- 1 430 MHz frequency band. Test results show that the ACNS can be used as a microwave radiometer calibration cold source.
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2017年第1期112-118,共7页 Journal of Xidian University
基金 全球水循环观测卫星有效载荷关键技术与卫星方案设计论证研究资助项目(XDA04061202)
关键词 有源微波冷噪声源 辐射计 定标 遥感 高电子迁移率场效晶体管 active cold noise source radiometers calibration remote sensing high electronmobility transistor
  • 相关文献

参考文献3

二级参考文献13

  • 1史久新,朱大勇,赵进平,曹勇.海水盐度遥感反演精度的理论分析[J].高技术通讯,2004,14(7):101-105. 被引量:14
  • 2Helder D,Thome K J,Mishra N,et al.Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site[J].IEEE Transactions on Geoscience and Remote Sensing,2013,51(3):1360-1369. 被引量:1
  • 3Helder D L,Karki S,Bhatt R,et al.Radiometric Calibration of the Landsat Mss Sensor Series[J].IEEE Transactions on Geoscience and Remote Sensing,2012,50(6):2380-2399. 被引量:1
  • 4Huang F,Huang Y,Flynn L E,et al.Radiometric Calibration of the Solar Backscatter Ultraviolet Sounder and Validation of Ozone Profile Retrievasl[J].IEEE Transactions on Geoscience and Remote Sensing,2012,50(12):4956-4964. 被引量:1
  • 5McCorkel J,Thome K,Lockwood R B.Absolute Radiometric Calibration of Narrow-swath Imaging Sensors with Reference to Non-coincident Wide-swath Sensors[J].IEEE Transactions on Geoscience and Remote Sensing,2013,51(3):1309-1318. 被引量:1
  • 6De Wachter E,Haefele A,Kmpfer N,et al.The Seoul Water Vapor Radiometer for the Middle Atmosphere:Calibration,Retrieval,and Validation[J].IEEE Transactions on Geoscience and Remote Sensing,2011,49(3):1052-1062. 被引量:1
  • 7Liljegren J C.Automatic Self-Calibration of ARM Microwave Radiometers[C]//Microwave Radiometry and Remote Sensing of the Earth's Surface and Atmosphere.New York:ACM,2000:433-441. 被引量:1
  • 8Han Y.Analysis and Improvement of Tipping Calibration for Ground-based Microwave Radiometers[J].IEEE Transactions on Geoscience and Remote Sensing,2000,38(3):1260-1276. 被引量:1
  • 9D'orazio A,De Sario M,Gramegna T,et al.Optimisation of Tipping Curve Calibration of Microwave Radiometer[J].Electronics Letters,2003,39(12):905-906. 被引量:1
  • 10李靖,张俊荣,赵凯.实时定标微波辐射计[J].电子科学学刊,1998,20(2):285-288. 被引量:5

共引文献17

同被引文献5

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部