天線陣輻射圖零點(diǎn)控制理論導(dǎo)論
ANTENNA ARRAY PATTERN NULL-STEERINGA THEORETICAL INTRODUCTION
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摘要: 天線陣輻射圖型強(qiáng)制零點(diǎn)控制,由于對(duì)定向干擾抑制的有效性,已成為天線陣輻射圖型綜合理論中心課題之一。本文圍繞著這個(gè)課題,對(duì)三維天線陣輻射圈的零點(diǎn)控制進(jìn)行了研究,它包括:用矢量空間方法,分析了多重零點(diǎn)控制的基本關(guān)系;根據(jù)零點(diǎn)本身的擴(kuò)展性,引入了零域的概念,提出了多重強(qiáng)制零域的生成方法;導(dǎo)出了多重零點(diǎn)控制輻射圖型的分解公式;揭示了由主波束和多個(gè)零點(diǎn)強(qiáng)制波束合成多重強(qiáng)制零點(diǎn)輻射圖型的基本規(guī)律;給出了數(shù)值結(jié)果并進(jìn)行了討論;把這一分解原理與自適應(yīng)成零天線陣輻射圖型進(jìn)行了類比。
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關(guān)鍵詞:
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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