一种舰载分布式数字阵列雷达系统技术研究

Research On Shipboard Distributed Digital Array Radar System

分布式阵列雷达采用多个分布式小孔径子阵,通过相参处理的方式来扩大天线孔径,提高测角精度与分辨率,增强探测威力,可以为大物理孔径阵列雷达的设计提供更高的自由度。介绍了一种舰载分布式数字阵列雷达系统,结合P~L波段超宽带天线和数字阵列的优点,通过采用分布式阵列体制以及数字阵列信号处理技术,有效增加天线孔径尺寸和信息获取能力,提高雷达的探测性能;采用天线与舰体共形设计,实现舰体与电磁隐身,提升水面舰艇集成一体化设计能力。雷达系统可针对不同舰船平台结构进行孔径重构和优化布阵,具有多功能、多模式、通用性强的优点。

The distributed array radar consists of several distributed small aperture sub-arrays processed coherently,which can expand the antenna aperture,improve the angular measurement accuracy and resolution,and enhance the detection ability,which can also provide higher degrees of freedom for large physical aperture array designation.A shipboard distributed digital array radar system combining with P~L ultra wide band antenna and the advantages of digital array is demonstrated.The new radar adopts the distributed array system and digital array signal processing technology,can effectively increase the antenna aperture size and information acquisition capability,improve the detection performance.It adopts a hull conformal antenna design,realizes the hull and electromagnetic stealth,improve platform surface integration ability.The proposed radar system can reconstruct aperture and optimize array according to different ship platform structures,and has the advantages of multi-function,multi-mode and universality.