中国物理B ›› 2008, Vol. 17 ›› Issue (2): 608-617.doi: 10.1088/1674-1056/17/2/041

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The transient scattering mechanism of dipole array with reflector

张雪芹, 王均宏, 李增瑞   

  1. Key Laboratory of All Optical Network & Advanced Telecommunication Network, Ministry of Education, Beijing 100044, China;Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2007-05-08 修回日期:2007-08-28 出版日期:2008-02-20 发布日期:2008-02-20
  • 基金资助:
    Project supported by the Foundations of Beijing Jiaotong University and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.

The transient scattering mechanism of dipole array with reflector

Zhang Xue-Qin(张雪芹)a)b)†, Wang Jun-Hong(王均宏)a)b), and Li Zeng-Rui(李增瑞)a)b)   

  1. a Key Laboratory of All Optical Network & Advanced Telecommunication Network, Ministry of Education, Beijing 100044, China; b Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2007-05-08 Revised:2007-08-28 Online:2008-02-20 Published:2008-02-20
  • Supported by:
    Project supported by the Foundations of Beijing Jiaotong University and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.

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摘要： The transient backscattering mechanisms of a dipole array with reflector have been investigated from different aspects: time-domain, frequency-domain, and combined time-frequency domain, using $4\times 8$ dipole arrays with reflector as an example. The data of scattering from the arrays under the incidence of Gaussian pulses are obtained by finite differential time domain method. The influences of the array structural parameters, incident wave parameters, and incident angles on the waveforms, spectrum, and time-frequency representations of the backscattered fields of the arrays are analysed and conclusions are drawn. From these characteristics and conclusions, it is possible to deduce the array structure inversely from the backscattered field.

关键词: dipole array, reflector, scattering, time domain

Abstract: The transient backscattering mechanisms of a dipole array with reflector have been investigated from different aspects: time-domain, frequency-domain, and combined time-frequency domain, using $4\times 8$ dipole arrays with reflector as an example. The data of scattering from the arrays under the incidence of Gaussian pulses are obtained by finite differential time domain method. The influences of the array structural parameters, incident wave parameters, and incident angles on the waveforms, spectrum, and time-frequency representations of the backscattered fields of the arrays are analysed and conclusions are drawn. From these characteristics and conclusions, it is possible to deduce the array structure inversely from the backscattered field.

Key words: dipole array, reflector, scattering, time domain

中图分类号:  (Antennas: theory, components and accessories)

  • 84.40.Ba
84.40.Xb (Telemetry: remote control, remote sensing; radar)