摘要
基于低空巡航导弹等地面高度飞行的事实,在引入多路径球面几何模型的基础上,推导并定义了反应多路径条件下地基雷达探测性能的多路径因子。通过分析多路径因子对探测巡航导弹的影响,提出利用频率分集克服多路径效应探测盲区的方法,并对频率分集克服多路径效应探测盲区的原理进行了分析,最后进行了仿真验证。仿真结果表明,对于探测低空巡航导弹的地基雷达,在一定的距离范围内,采用频率分集可以较好地克服多路径效应探测盲区。
Based on the fact of cruise missile flying at equal height,the spherical geometry model of multipath is introduced.The multipath factor which reflects performance of ground-based radar in multipath is deduced and defined.A method of adopting dual-frequency diversity to overcome blind zone induced by multipath is put forward by analyzing the influence of multipath factor on cruise missile detection.Then the principle of overcoming the detection blind zone with frequency diversity is analyzed.The method is simulated and validated finally.Simulation testifies that within a certain range the method is a good way of filling blind zone for ground-based radar by adopting frequency diversity in the case of multipath.
出处
《雷达科学与技术》
2010年第3期204-208,共5页
Radar Science and Technology
关键词
多路径效应
巡航导弹
频率分集
多路径因子
multipath effect
cruise missile
frequency diversity
multipath factor
