天线阵辐射图零点控制理论导论
ANTENNA ARRAY PATTERN NULL-STEERINGA THEORETICAL INTRODUCTION
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摘要: 天线阵辐射图型强制零点控制,由于对定向干扰抑制的有效性,已成为天线阵辐射图型综合理论中心课题之一。本文围绕着这个课题,对三维天线阵辐射圈的零点控制进行了研究,它包括:用矢量空间方法,分析了多重零点控制的基本关系;根据零点本身的扩展性,引入了零域的概念,提出了多重强制零域的生成方法;导出了多重零点控制辐射图型的分解公式;揭示了由主波束和多个零点强制波束合成多重强制零点辐射图型的基本规律;给出了数值结果并进行了讨论;把这一分解原理与自适应成零天线阵辐射图型进行了类比。
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Abstract: Antenna array pattern null-steering is one of the important current topics in array synthesis theory, because it is very effective in suppressing interfering signals. Thus the problem of forming nulls in the radiational pattern of three-dimentional arrays is discussed. This paper discusses the following aspects of the said arrays: The essential relations of forming multi-nulls are analysed by the method of vector space; The method of forming multi-null regions is presertted by the concept of null region in terms of the extended property of null itself the beam-resolvent formulation of radiational pattern of multi-null steering is derived; numerical results are included and discussed. The beam-resolvent formulation is analogous to the one of adaptive arrays. -
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