...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Effects of Resonances in Corrugated Horn Antennas for a 22-GHz Balancing Radiometer
【24h】

Effects of Resonances in Corrugated Horn Antennas for a 22-GHz Balancing Radiometer

机译：22 GHz平衡辐射计在波纹状喇叭天线中的共振效应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Stratospheric WAter vapor RAdiometer (SWARA) is a microwave radiometer designed for ground-based measurements of water vapor (H2O) in the middle atmosphere (20 to 80 km), including the stratosphere and mesosphere. The instrument is operating in a noncryogenic balancing calibration mode. Since its deployment, features have been observed in the spectrum which can be attributed to resonant variations of the antenna pattern of the corrugated horn. This paper presents copolar and crosspolar antenna pattern measurements of two sister antennas of the SWARA horn, as well as water vapor measurements from both antennas on the ground-based microwave radiometer MI ddle Atmospheric WAter vapor RA diometer. We show that small irregularities in the frequency spectrum at the -20-dB level are visible in the copolar pattern, which, due to the balancing operation scheme used for the radiometer, lead to features in the spectrum that have the same or even higher brightness temperature as the line of interest.
机译：平流层水蒸气辐射度计（SWARA）是一种微波辐射计，设计用于对平流层和中层大气等中层大气（20至80 km）中的水蒸气（H2O）进行地面测量。仪器以非低温平衡校准模式运行。自从其部署以来，已经在频谱中观察到特征，这可以归因于波纹状喇叭的天线方向图的共振变化。本文介绍了SWARA喇叭的两个姐妹天线的同极和交叉极天线方向图测量，以及地面微波辐射计MI ddle Atmospheric WAter蒸气RA辐射计上两个天线的水蒸气测量结果。我们显示，在共极化模式中可见到-20 dB级别的频谱中的微小不规则现象，这归因于辐射计所使用的平衡操作方案，导致频谱中的特征具有相同甚至更高的亮度温度作为关注点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号