陣列綜合與天線雷達(dá)截面控制技術(shù)研究
發(fā)布時(shí)間：2018-10-09 18:19
【摘要】：隨著信息技術(shù)的飛速發(fā)展,現(xiàn)代化的偵查設(shè)備和武器系統(tǒng)進(jìn)入智能化時(shí)代,其精度與強(qiáng)度越來越高,使得傳統(tǒng)武器在戰(zhàn)場上突防、生存和打擊能力受到嚴(yán)重的威脅。對于低RCS武器平臺,天線的RCS就相對顯得巨大,其RCS控制問題逐漸凸顯,也成為制約整個系統(tǒng)隱身性能的瓶頸。因此,有效地降低及控制天線或陣列天線的RCS,在天線的輻射與散射間做適當(dāng)合理的折衷,對于系統(tǒng)的隱身性能具有重大的意義。本論文密切結(jié)合國家項(xiàng)目著重就陣列綜合問題與天線雷達(dá)截面的控制方法進(jìn)行了有效的研究,主要內(nèi)容可概括為:1.首先對優(yōu)化算法做了一定的研究,主要討論了粒子群優(yōu)化算法、差分進(jìn)化算法。對于HFSS軟件的二次開發(fā)進(jìn)行了系統(tǒng)的描述,并利用Matlab調(diào)用HFSS軟件,在差分進(jìn)化優(yōu)化策略下對MIMO系統(tǒng)天線陣元位置對其信道相關(guān)系數(shù)的影響做了初步的探索。之后,為提高優(yōu)化效率,將粒子群算法與隱式空間映射算法相結(jié)合,并將這一方法成功地用于陣列綜合中,為復(fù)雜天線的快速優(yōu)化做出了探索。2.通過對結(jié)構(gòu)型吸波材料的研究,實(shí)現(xiàn)了將結(jié)構(gòu)型吸波材料用于微帶天線的RCS減縮中。通過吸波材料的特性分析,設(shè)計(jì)了包括加載集總電阻的小型化結(jié)構(gòu)型吸波材料等多組吸波材料,并將部分置于微帶天線單元之間。提供了一種不改變天線基本結(jié)構(gòu),不增加天線剖面,利用單元間加載技術(shù),通過吸波材料對入射波的吸收作用,實(shí)現(xiàn)微帶天線帶內(nèi)RCS減縮的新方法。3.分析了缺陷地結(jié)構(gòu)的一般原理與特點(diǎn),設(shè)計(jì)了一款RCSSR型的雙頻缺陷地結(jié)構(gòu),并將該結(jié)構(gòu)加載與雙頻微帶天線之間,給出了一種降低多頻段微帶天線單元之間互耦的方法。4.為了應(yīng)對天線RCS減縮寬頻化的需求,通過吸波材料的等效電路分析,設(shè)計(jì)了一款基于頻率選擇表面的復(fù)合寬頻吸波材料。該材料具有良好的吸波效果以及較寬的帶寬,并將其應(yīng)用于兩種端射天線的反射板置換,利用犧牲最小化的增益換取RCS減縮并做到輻射與散射折衷處理的指導(dǎo)思想,達(dá)到了在保證天線基本輻射性能的前提下,天線的單站RCS減縮。5.傳統(tǒng)的天線RCS減縮方法,當(dāng)入射波方向?yàn)榉谴怪比肷鋾r(shí)即會出現(xiàn)天線RCS減縮困難的問題。本文研究了左手材料并分析了其基本特性,對基本的SRR型左手材料進(jìn)行了詳細(xì)的參數(shù)分析。給出了基于左手材料下的特定角度范圍內(nèi)天線RCS減縮的基本原理以及使用LHM結(jié)構(gòu)覆層后電磁波照射時(shí)天線散射的幾部分構(gòu)成。6.在基于左手材料的天線RCS減縮原理的指導(dǎo)下,研究了兩組基于左手材料覆層的天線RCS減縮實(shí)例,同時(shí)為了應(yīng)對加載覆層后天線剖面驟增的問題,設(shè)計(jì)了一款低剖面的LHM結(jié)構(gòu)覆層,改善了加載覆層后的天線剖面,并加工實(shí)測了低剖面天線樣機(jī)。
[Abstract]:With the rapid development of information technology, the modern investigation equipment and weapon system have entered the intelligent era, its precision and intensity are more and more high, which makes the traditional weapons penetration in the battlefield, survival and strike ability is seriously threatened. For the low RCS weapon platform, the RCS of the antenna is relatively huge, and the RCS control problem is becoming more and more prominent, which has become the bottleneck restricting the stealthy performance of the whole system. Therefore, it is of great significance for the stealthy performance of the system to reduce and control the RCS, of antenna or array antenna effectively and make a proper and reasonable tradeoff between the radiation and scattering of antenna. In this paper, the effective research on array synthesis and antenna radar cross section control method is carried out in close combination with the national project. The main content can be summarized as: 1. Firstly, the optimization algorithm is studied, and the particle swarm optimization algorithm and differential evolution algorithm are discussed. The secondary development of HFSS software is described systematically, and the influence of the location of antenna array elements on the channel correlation coefficient of MIMO system is preliminarily explored under the differential evolution optimization strategy by using Matlab to call HFSS software. Then, in order to improve the optimization efficiency, the particle swarm optimization algorithm and implicit space mapping algorithm are combined, and this method is successfully used in array synthesis. Based on the study of the structural absorbing materials, the structural absorbing materials are used in the RCS reduction of microstrip antennas. Based on the analysis of the characteristics of the absorbing materials, several groups of absorbing materials, such as miniature structural absorbing materials with loaded lumped resistors, are designed, and some of them are placed between the microstrip antenna elements. A new method of RCS reduction in microstrip antenna strip is provided, which does not change the basic structure of the antenna and does not increase the antenna profile. By using the technology of interelement loading and absorbing the incident wave by absorbing materials, a new method of RCS reduction in the microstrip antenna is provided. This paper analyzes the general principle and characteristics of the defective ground structure, designs a dual-frequency defective ground structure of RCSSR type, loads the structure between the dual-frequency microstrip antenna and the dual-frequency microstrip antenna, and presents a method to reduce the mutual coupling between the multi-band microstrip antenna elements. In order to meet the demand of antenna RCS reduction and broadband reduction, a composite broadband absorbing material based on frequency selective surface was designed by analyzing the equivalent circuit of absorbing material. The material has good absorbing effect and wide bandwidth. It is applied to the reflector replacement of two kinds of end-emitting antennas. The RCS is reduced by sacrificing the minimum gain and the tradeoff between radiation and scattering is achieved. Under the premise of guaranteeing the basic radiation performance of the antenna, the single station RCS of the antenna is reduced by 5. 5. In the traditional antenna RCS reduction method, the problem of antenna RCS reduction will occur when the direction of incident wave is non-perpendicular. In this paper, the left-handed materials are studied and their basic properties are analyzed. The basic SRR left-handed materials are analyzed in detail. The basic principle of antenna RCS reduction based on left-handed material in a specific angle range and several components of antenna scattering after electromagnetic wave irradiation using LHM structure are given. Under the guidance of the RCS reduction principle of the antenna based on left-handed material, two groups of antenna RCS reduction cases based on the left-handed material coating are studied. In order to cope with the problem of the sudden increase of antenna profile after the loading of the coating, two groups of antenna RCS reduction examples are studied. A low profile LHM structure coating is designed to improve the antenna profile after loading and the prototype of the low profile antenna is processed.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TN957.2
本文編號：2260312
[Abstract]:With the rapid development of information technology, the modern investigation equipment and weapon system have entered the intelligent era, its precision and intensity are more and more high, which makes the traditional weapons penetration in the battlefield, survival and strike ability is seriously threatened. For the low RCS weapon platform, the RCS of the antenna is relatively huge, and the RCS control problem is becoming more and more prominent, which has become the bottleneck restricting the stealthy performance of the whole system. Therefore, it is of great significance for the stealthy performance of the system to reduce and control the RCS, of antenna or array antenna effectively and make a proper and reasonable tradeoff between the radiation and scattering of antenna. In this paper, the effective research on array synthesis and antenna radar cross section control method is carried out in close combination with the national project. The main content can be summarized as: 1. Firstly, the optimization algorithm is studied, and the particle swarm optimization algorithm and differential evolution algorithm are discussed. The secondary development of HFSS software is described systematically, and the influence of the location of antenna array elements on the channel correlation coefficient of MIMO system is preliminarily explored under the differential evolution optimization strategy by using Matlab to call HFSS software. Then, in order to improve the optimization efficiency, the particle swarm optimization algorithm and implicit space mapping algorithm are combined, and this method is successfully used in array synthesis. Based on the study of the structural absorbing materials, the structural absorbing materials are used in the RCS reduction of microstrip antennas. Based on the analysis of the characteristics of the absorbing materials, several groups of absorbing materials, such as miniature structural absorbing materials with loaded lumped resistors, are designed, and some of them are placed between the microstrip antenna elements. A new method of RCS reduction in microstrip antenna strip is provided, which does not change the basic structure of the antenna and does not increase the antenna profile. By using the technology of interelement loading and absorbing the incident wave by absorbing materials, a new method of RCS reduction in the microstrip antenna is provided. This paper analyzes the general principle and characteristics of the defective ground structure, designs a dual-frequency defective ground structure of RCSSR type, loads the structure between the dual-frequency microstrip antenna and the dual-frequency microstrip antenna, and presents a method to reduce the mutual coupling between the multi-band microstrip antenna elements. In order to meet the demand of antenna RCS reduction and broadband reduction, a composite broadband absorbing material based on frequency selective surface was designed by analyzing the equivalent circuit of absorbing material. The material has good absorbing effect and wide bandwidth. It is applied to the reflector replacement of two kinds of end-emitting antennas. The RCS is reduced by sacrificing the minimum gain and the tradeoff between radiation and scattering is achieved. Under the premise of guaranteeing the basic radiation performance of the antenna, the single station RCS of the antenna is reduced by 5. 5. In the traditional antenna RCS reduction method, the problem of antenna RCS reduction will occur when the direction of incident wave is non-perpendicular. In this paper, the left-handed materials are studied and their basic properties are analyzed. The basic SRR left-handed materials are analyzed in detail. The basic principle of antenna RCS reduction based on left-handed material in a specific angle range and several components of antenna scattering after electromagnetic wave irradiation using LHM structure are given. Under the guidance of the RCS reduction principle of the antenna based on left-handed material, two groups of antenna RCS reduction cases based on the left-handed material coating are studied. In order to cope with the problem of the sudden increase of antenna profile after the loading of the coating, two groups of antenna RCS reduction examples are studied. A low profile LHM structure coating is designed to improve the antenna profile after loading and the prototype of the low profile antenna is processed.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TN957.2
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 王少敏,高建平,于九皋,王為;大分子視黃基席夫堿鹽微波吸收劑的制備[J];宇航材料工藝;2000年02期
，本文編號：2260312
本文鏈接：http://sikaile.net/kejilunwen/wltx/2260312.html
最近更新
教材專著
