Occultation Judgment for the Hemispherical Coverage Multi-Planar Arrays Antenna

Abstract:

A flexible hemispherical coverage array antenna based on multi-planar arrays is proposed to meet the growing demands for multi-target TT&C. The advantages and disadvantages of multi-planar arrays and dome phased in engineering implement are compared. Meanwhile, the influence of different number of plane arrays on antenna pattern is analyzed. For the purpose of interference suppression a novel beamforming method by adding constraint conditions is analyzed to enhance the performance of antenna for TT&C system. Considering the influence of occultation effect on the antenna performance, an effective occultation algorithm is presented. Firstly, the faces in bright area are projected on the plane that is perpendicular with the direction of receiving wave. Secondly, adopting the principle of line segment intersection, the intersect relationship of projective planes is determined. Finally, the facets shadowing relationship is judged by the overlapping and depth-of-view of facets along the receiving wave direction. Theoretical analyses and simulation results show that the antenna has approximate uniform gain beampattern in different steered angle and the occultation algorithm is feasible and effective.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 2663-2667
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.2663
• Online since: February 2014
• Authors: Jian Hua Hao*, Dian Fei Pan, Nai Ping Cheng
• Keywords: Hemispherical Coverage, Multi-Planar Arrays Antenna, Occultation, Telemetry Track and Command (TT&C)

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