一种机载多频多通道雷达空频联合设计方法  

Space-frequency optimization for ground moving target indication with airborne multi-channel multi-frequency radar

作　　者：杜文韬[1] 廖桂生[1] 杨志伟[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2012年第11期2226-2230,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(60901066);长江学者与创新团队发展计划(IRT-0954);教育部博士点基金(20090203120006);国防预研基金资助课题

摘　　要：单频多通道雷达系统难以同时兼顾更大的不模糊速度和更好的最小可检测速度,多频多通道系统是解决该问题的一种有效途径。但是,天线布阵方式和中心频率组的选择会影响动目标检测性能,需对收发天线形式和多频组合方式进行优化设计。以最小化不可测速区间为目标,提出一种空频联合优化方法。该方法通过阵列排布的归一化处理实现天线布阵方式和多频的联合优化,相较于先空后频级联优化方法,在方位孔径长度、频率带宽受限下可显著减小盲速和不可解模糊速度区间。仿真结果验证了该算法的有效性。It is difficult to give consideration to both the maximum unambiguous velocity and the minimum detectable velocity（MDV）simultaneously in the single frequency uniform linear array radar system. A non-uniform linear array radar system with multiple carrier-frequencies provides an approach to settle the problem. However, the detect performance is impacted by the array pattern and frequency values, which need to be optimized to reach the best detect result. A space-frequency joint optimization method to minimize the undetected velocity region is presented,which performs better when compared with a cascade optimization method under limited conditions. A preliminary result against an airborne simulation data demonstrates the effectiveness of the proposed method.

关 键 词：多频多通道雷达 地面动目标检测 空频联合优化 测速区间 

分 类 号：TN958[电子电信—信号与信息处理]