加權(quán)陣列天線的設(shè)計方法馬爾柯夫鏈法
DESIGN APPROACH FOR WEIGHTED ARRAY ANTENNAS MARKOV CHAINS APPROACH
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摘要: 加權(quán)陣列天線的設(shè)計目前主要采用統(tǒng)計法。本文通過總結(jié)統(tǒng)計法的優(yōu)缺點,提出了一個新方法馬爾柯夫鏈法。新方法采用將陣列分成若干個區(qū)的方式,反映了在陣列的不同部分,單元相關(guān)性不同這一特性,改變了以前設(shè)計加權(quán)天線對籠統(tǒng)地考慮整個陣列上的單元排列。應(yīng)用隨機過程的馬爾柯夫鏈特性,得到了各個隨機量處于不同狀態(tài)的概率。由于馬爾柯夫鏈法反映了實際低副瓣天線的口徑分布,因而利用此種方法更容易得到低副瓣的加權(quán)陣列天線。Abstract: Usually, weighted array antennas are designed by using the statistical appro-ach. In this paper, the application of the Markoy chains of a random process to the design of density weighted or phase weighted arrays is considered. The new approach is proposed to improve the Statistical approach and devides the array into several parts, in which the selection of the element location or phase is performed correlatively utilizing the probability density function for specifying the location or phase of elements at every part.
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Y. C. Guo, M. S. Smith, IEE Proc.; 130(1983)8, 343.[2]孫茂友,現(xiàn)代雷達,1979年,第3期,第36頁.[3]郭燕昌,錢繼曾等,相控陣和頻率掃描天線原理,國防工業(yè)出版社,1978年.[4]王梓坤,隨機過程論,科學(xué)出版社,1978年. -
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