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題名 | Array Pattern Synthesis with Null Steering using Genetic Algorithms by Controlling Only the Current Amplitudes=利用基因遺傳法控制電流振幅合成具盲點之天線陣列場型 |
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作者 | 廖文聘; 竺福來; | 書刊名 | 大同學報 |
卷期 | 26 1996.11[民85.11] |
頁次 | 頁69-78+407 |
分類號 | 448.813 |
關鍵詞 | 基因遺傳法; 控制; 電流振幅; 合成具盲點; 天線陣列場型; |
語文 | 英文(English) |
中文摘要 | 本文利用基因遺傳法單控制電流振幅即可成功地合成具盲點之天線陣列場型。此法合成之天線陣列場型其盲點可置於所須之受干擾方向並使主瓣針對所須之信號方向,同時保持夠低之旁瓣強度及夠深之盲點深度。與其它場型盲點控制法比較,此法簡單且易於實踐。經由簡單改變目標函數之加權指數值,此法亦可用於其它場型之合成。數值結果顯示此法可有效地合成具盲點之天線陣列場型。 |
英文摘要 | In this paper, the technique for antenna array pattern synthesis with null steering using the genetic algorithms by controlling only the element excitation current amplitudes is presented. This technique is capable of synthesizing the antenna pattern with nulls imposed at the directions of undesired interferences while simultaneously maintaining the main beam directed toward the desired signal with prescribed sidelobe level and null depth level. The proposed technique is simpe and easy to be implemented compared to conventional null steering techniques. The versatility of proposed technique are also demonstrated by simply changing the weighting factors of the fitness function constructed. Numerical results show the effectiveness of the null steering technique with invariant main beam, prescribed sidelobe level and null depth level even when the number of array nulls imposed in the sidelobe region is excessively large. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。