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全极化微波辐射计加法型模拟复相关器研究 被引量：2

Study on Additive Analog Correlator Used in Fully Polarimetric Radiometer
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摘要 全极化微波辐射计的核心部分是复相关器。介绍了一种加法型模拟复相关器,它采用混合耦合器构成移相网络,在中频将电磁波信号相位调整到特定状态,从而实现了用加法思想获取全部Stokes参量。分别研制了分布参数和集总参数的移相网络,对它们测量并进行比较。最后对加法型模拟复相关器进行了整体测试,给出了噪声源测量下的相位反演能力测试。结果表明加法型模拟复相关器具有较好的极化测量性能。 Fully polarimetric radiometer＇s key component is the complex correlator.An additive analog complex correlator is represented in this paper.The phase-shifting network constituted by hybrid coupler is used to adjust the electromagnetic phase to a specific state in IF,and all Stokes parameters are obtained by using the additive thought.Both distributed and lumped parameters of phase-shift networks are developed respectively,their measurement and comparison are performed too.At last,the overall test for the additive analog complex correlator is presented,and the ability of the phase inversion under the condition of noise source measurement is discussed.The performed and results show that the additive analog complex correlator has a good performance in polarization measurement.
作者 王新彪 李靖 姜景山
机构地区 中国科学院空间科学与应用研究中心 中国科学院微波遥感技术重点实验室 中国科学院研究生院
出处 《宇航学报》 EI CAS CSCD 北大核心 2011年第8期1840-1847,共8页 Journal of Astronautics
关键词 全极化微波辐射计 加法型模拟相关器 混合耦合器 Fully polarimetric radiometer Additive analog correlator Hybrid coupler
分类号 P237 [天文地球—摄影测量与遥感]
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参考文献11

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同被引文献11

  • 1董晓龙,吴季,姜景山.被动微波遥感技术的新发展——综合孔径微波辐射计和全极化参量微波辐射计[J].现代雷达,2001,23(4):73-78. 被引量：11
  • 2Yan J Y, Wu J, Neira M M. FPIR: a one dimensional full polarization interferometric radiometer [ C ]. IEEE International Geoscience and Remote Sensing Symposium, Barcelona, Spain, July 23 - 27, 2007.
  • 3Yan J Y, Wu J, Liu H, et al. Conical beam intefferometer: FPIR concept and development [ C ]. IEEE International Geoscience and Remote Sensing Symposium, Cape Town, South Africa, July 12 - 17, 2009.
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  • 6Corbella I, Duffo N, Ilossera V N, et al. The visibility function in interferometric aperture synthesis radiometry [ J ]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42 (8) : 1677 - 1682.
  • 7Tanner B A, Swift T C. Calibration of a synthetic aperture radiometer[ J]. IEEE Transactions on Geoscience and Remote Sensing, 1993, 31(1) : 257 -267.
  • 8Anterrieu E. On the reduction of the reconstruction bias in synthetic aperture imaging radiometry ( corrected ) [ J ]. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45 (4) : 1084 - 1093.
  • 9Anterrieu E, Khazaal A. Brightness temperature map reconstruction from dual-polarimetric visibilities in synthetic aperture imaging radiometry [ J ] IEEE Transactions on Geoscience and Remote Sensing, 2008, 46(3) : 606 -612.
  • 10Ribo S, Neira M M. Faraday rotation correction in the polarimetric mode of MIRAS [ J ]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42(7) : 1405 -1410.

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宇航学报
2011年 第8期

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