新一代二维阵OTHR阵列结构与方向图性能研究  

A Study on Array Configurations and Radiation Pattern Performance for New Generation 2-D Array OTHR

作　　者：严韬[1] 陈建文[1] 罗欢[1] 鲍拯[1] 

机构地区：[1]空军预警学院重点实验室,武汉430019

出　　处：《现代雷达》2015年第4期59-64,共6页Modern Radar

基　　金：国家自然科学基金资助项目(61072132;61471391)

摘　　要：以新一代二维阵天波超视距雷达(OTHR)为研究对象,重点对阵列结构与方向图性能进行了研究。首先,总结了新一代二维阵OTHR的研究现状并分析了其性能优势;然后,选取均匀十字阵、均匀矩形阵、cantor多圆环阵和阿基米德螺旋阵等四种典型二维阵列进行了方向图仿真分析,结果表明cantor多圆环阵和阿基米德螺旋阵具有较优的方向图性能;同时,利用遗传算法对均匀矩形阵、cantor多圆环阵和阿基米德螺旋阵进行稀疏优化,在保持方向图性能的前提下进一步减少了阵元个数;最后,针对二维阵OTHR的工程实践,阐述了其适用条件,指出了阵列结构选取、误差校准及降低处理复杂度等三个方面的问题,并提出了相应的解决方案,为新一代二维阵OTHR阵列结构的选择提供了理论依据。The new generation 2-D array over-the-horizon radar（OTHR） is studied, especially the array configurations and radiation pattern performance are made. Firstly the current research evolvements of 2-D array OTHR are addressed and the performance ad- vantages are analysed. And then, radiation pattern based on uniform cross array, uniform rectangle array, cantor multi-ring arrays and archimedes spiral array are simulated and analysed, simulation results proved the better radiation pattern performance of cantor multi-ring arrays and archimedes spiral array. After that the uniform rectangle array, cantor multi-ring arrays and archimedes spiral array are thinned by utilizing genetic algorithm, element number of array is reduced while maintaining the performance of radiation pattern. Finally, aiming at the problem of engineering application for 2-D array OTHR, applicability conditions are discussed, actual problems such as array configuration selection, error calibration and complexity reduction are pointed out and the corresponding solutions are proposed. Theory foundation of array selection configurations for new generation OTHR is provied.

关 键 词：新一代天波超视距雷达 二维阵列 方向图 稀疏阵列 遗传算法 

分 类 号：TN958.93[电子电信—信号与信息处理]