锥台共形阵列方向图综合研究

发布时间：2018-04-16 07:56

本文选题：共形阵列 + 方向图综合　；参考：《南京航空航天大学》2014年硕士论文

【摘要】：共形天线阵列在满足电性能要求的情况下,不影响载体的空气动力学特性,相比普通的线阵和平面阵具有不可替代的优势,因而在民用和军事领域得到越来越广泛的应用。锥台共形阵列在导弹、飞机等场合发挥着重要的作用,因而开展锥台共形阵列的研究具有重要的国防意义。本文围绕锥台共形阵列方向图分析与综合,主要开展了以下研究工作:1、通过坐标变换和方向图叠加原理完成了锥台共形阵列的分析。应用插值技术解决了基于实测单元方向图的阵列分析问题。最终将圆柱和锥台共形阵列的算法分析结果与仿真结果对比验证了算法的正确性。2、将两种不同的选择算子联合运用对基于单一选择算子的基本遗传算法进行了改进,并采用自适应交叉概率和变异概率来代替传统的固定概率。实例分析表明改进遗传算法在收敛速度和全局寻优能力上有了很大提高。3、将上述改进遗传算法分别应用于圆柱共形阵列和锥台共形阵列的低副瓣综合和零点综合问题上,对阵元的激励幅度和相位进行优化,最终得到满足要求的方向图。4、在上述共形阵列分析和综合算法的基础上,以Visual C++为平台,开发出一款基于测试单元方向图的共形阵列分析和综合的软件,并介绍了软件的工作流程和用户界面。
[Abstract]:Conformal antenna arrays have irreplaceable advantages over ordinary linear and planar arrays without affecting the aerodynamics characteristics of carriers without affecting the requirements of electrical performance. Therefore conformal antenna arrays are more and more widely used in civil and military fields.Conformal taper array plays an important role in missile, aircraft and so on, so the research of conformal conformal array is of great significance for national defense.This paper focuses on the analysis and synthesis of conformal conformal arrays of conformal conformal taper stations. The following research work is mainly carried out: 1. The analysis of conformal arrays of conformal taper stations is accomplished by means of coordinate transformation and the principle of superposition of pattern.The problem of array analysis based on measured cell pattern is solved by interpolation technique.Finally, the algorithm analysis results of cylindrical and conical conformal arrays are compared with simulation results to verify the correctness of the algorithm. The two different selection operators are combined to improve the basic genetic algorithm based on single selection operator.Adaptive crossover probability and mutation probability are used to replace the traditional fixed probability.The analysis of an example shows that the improved genetic algorithm has greatly improved the convergence speed and global optimization ability. The improved genetic algorithm is applied to the low sidelobe synthesis and zero point synthesis of cylindrical conformal array and conical conformal array, respectively.The excitation amplitude and phase of the element are optimized, and finally the pattern. 4 is obtained. On the basis of the above conformal array analysis and synthesis algorithm, Visual C is used as the platform.A conformal array analysis and synthesis software based on the pattern diagram of test unit is developed, and the workflow and user interface of the software are introduced.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN820.12

【参考文献】