摘要
提出了一种利用天波超视距雷达作外辐射源的天地一体化雷达系统,并利用该系统来对海面舰船、低空飞机等目标进行有效探测。讨论了该雷达系统中存在的问题,如同步信号的获取,电离层反射带来的多径干扰抑制,阵元的幅相误差、舰船运动造成的导向矢量约束误差对天线阵列波束形成性能的影响,并给出了解决方案,仿真结果说明方法是行之有效的。
This paper presents a new radar system of whole technology from space and land, which uses the OTHR as the external illuminator to detect objects, which can effectively detect the target of ships and airplane. The existing problems in this system are discussed such as how to get the isochronous signals, and how to restrain the multi-path interference caused by ionosphere reflecting and the steering vector mismatch caused by the error of array extents and phases and the moving of the ships. Some methods in the beamforming are given to resolve them.
出处
《中国电子科学研究院学报》
2008年第1期65-69,共5页
Journal of China Academy of Electronics and Information Technology
基金
国家自然科学基金(60472087)
国防预研基金(9140A07040707DZ0132)
关键词
天地一体化
多波束
宽零陷
特征分解
whole technology from space and land
multi-beam
interference null widening
eigen de- composition
