本文選題：稀布天線陣列 + 矩陣束方法�。� 參考：《南京理工大學(xué)》2017年碩士論文

【摘要】：稀布陣列是一種新型天線陣列布陣方式。稀布陣列可以使陣元數(shù)目減少,陣元個(gè)數(shù)的減少不僅可以降低成本;而且陣元間距的增大可以使陣元間的互耦效應(yīng)減弱。由陣列方向圖可知,同時(shí)對(duì)陣元位置、激勵(lì)和相位進(jìn)行綜合是十分復(fù)雜的。本文討論的陣列優(yōu)化技術(shù)主要是指在給定期望方向圖函數(shù)的前提下,對(duì)陣列的陣元位置、激勵(lì)和相位進(jìn)行綜合優(yōu)化,使其用盡可能少的單元去擬合方向圖函數(shù)。本文運(yùn)用矩陣束方法和增廣矩陣束方法對(duì)稀布天線陣列進(jìn)行了優(yōu)化設(shè)計(jì),主要的工作和創(chuàng)新之處為:介紹了矩陣束方法和增廣矩陣束方法的基本原理,詳細(xì)分析了其適用于信號(hào)處理時(shí)需滿足的信號(hào)模型,并給出了其用于陣列天線綜合時(shí)需滿足的陣列模型。運(yùn)用矩陣束方法對(duì)直線陣列進(jìn)行稀布優(yōu)化,此方法對(duì)于均勻間隔的直線陣列有著非常良好的優(yōu)化效果。對(duì)一般的賦形波束方向圖,運(yùn)用矩陣束方法將無(wú)法達(dá)到理想的效果,在矩陣束方法的基礎(chǔ)上,研究分析了一種新的方法—前后向矩陣束方法,此方法利用特殊的矩陣結(jié)構(gòu)來(lái)約束極值點(diǎn)分布,可精確重構(gòu)期望的賦形波束方向圖,并推廣到多波束的問(wèn)題。運(yùn)用增廣矩陣束方法綜合平面天線陣列,可以保證方向圖的任一切面都具有最佳特性。此方法的關(guān)鍵技術(shù)包括由采樣點(diǎn)數(shù)據(jù)構(gòu)造增廣矩陣和對(duì)求得的極值點(diǎn)進(jìn)行配對(duì)。對(duì)一般的賦形波束方向圖,將增廣矩陣束方法和前后向思想相結(jié)合,研究分析了一種新的方法—前后向增廣矩陣束方法,通過(guò)算例證明了該方法的快速性和有效性,后期將其推廣到多波束的問(wèn)題。
[Abstract]:Thin array is a new type of antenna array. The thinning array can reduce the number of elements, which not only reduces the cost, but also weakens the mutual coupling effect between the elements with the increase of the distance between the elements. From the array pattern, it is very complicated to synthesize the position, excitation and phase of the elements simultaneously. The array optimization technique discussed in this paper mainly refers to synthetically optimizing the position, excitation and phase of array elements on the premise of a given desired direction graph function, so that the array can fit the direction graph function with as few elements as possible. In this paper, the method of matrix beam and the method of augmented matrix beam are used to optimize the design of thinning antenna array. The main work and innovation are as follows: the basic principles of matrix beam method and augmented matrix beam method are introduced. The signal model which is suitable for signal processing is analyzed in detail, and the array model for array antenna synthesis is given. The linear array is optimized by matrix beam method, which has a good effect on the linear array with uniform spacing. On the basis of the matrix beam method, a new method, the forward and backward matrix beam method, is studied and analyzed for the general pattern of shaped beam pattern, which can not achieve the ideal effect by using the matrix beam method. This method uses special matrix structure to constrain the distribution of extremum points, and can reconstruct the desired pattern of shaped beam accurately, and it can be extended to the problem of multi-beam. By using the augmented matrix beam method to synthesize the planar antenna array, the optimal properties of any tangent plane of the pattern can be guaranteed. The key techniques of this method include constructing the augmented matrix from the sample data and pairing the obtained extremum. In this paper, a new method, the backward and backward augmented matrix beam method, is studied and analyzed by combining the augmented matrix beam method with the forward and backward thought for the general shape beam pattern. An example is given to prove the rapidity and effectiveness of the method. It is extended to the problem of multi-beam in later stage.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN820

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