应用科学学报 ›› 1988, Vol. 6 ›› Issue (2): 95-102.

• 论文 •    下一篇

波束传输通过一般二维曲面介质天线罩的复数射线分析

高效杰   

  1. 电子工业部第三十九研究所
  • 收稿日期:1986-08-28 修回日期:1986-10-27 出版日期:1988-06-30 发布日期:1988-06-30

COMPLEX RAY ANALYSIS OF BEAM TRANSMISSION THROUGH GENERALLY-CURVED TWO-DIMENSIONAL RADOMES

GAO XIAOJIE   

  1. 39th Research Institute, Ministry of Electronics Industry
  • Received:1986-08-28 Revised:1986-10-27 Online:1988-06-30 Published:1988-06-30

摘要: 本文使用复数射线追踪方法分析一般二维曲面介质天线罩对波束传输的影响.理论分析及所推导的公式适用于任何二维光滑曲面介质罩;但计算时采用的数学模型为抛物线型介质天线罩.

Abstract: Assessment of the radiaton characteristics of certain types of radome-covered antennas poses the problem of transmission of amplitude tapered-aperture fields through a generally-curved dielectric taper. Modeling the amplitude taper by a Gaussian, the incident illumination can be generated by a source at a complex coordinate location. The radome problem is then addressed by tracing complex ray fields from the complex source point through the complex extension of the radome contiguration to the real location of the observer. The complex ray tracing takes into account multiple reflection inside the radome, and the multiple internal reflected complex ray can be combined into a "collective ray" which is weighted with a corrected transmission coefficient. The formulars developed in this study are applicable to generally-curved radomes, though parabolic shell radomes are chosen as the mathematical models for numerical computations.