摘要
天波超视距雷达(OTHR)利用地球电离层的反射作用能够探测1000 km以外的超过视距范围的目标。OTHR工作环境复杂,受外部干扰的影响很大,特别是强瞬态干扰。外部干扰是影响和制约OTHR探测性能的重要因素,抑制干扰也是OTHR信号处理的重要任务。但是OTHR数据极难获得,特别是瞬态干扰数据。本文建立各类常见回波信号和瞬态干扰的数学模型,通过平台产生含有瞬态干扰和强杂波的OTHR回波信号,为干扰抑制算法的研究提供丰富的数据对象。仿真数据与实测数据十分吻合,证明各个模型工作正常。
By virtue of refraction of ionosphere, over-the-horizon radar （OTHR） can detect area over 1000km beyond the line of sight. Its operation environment is very complicated. It may suffer from outer interferences, especially the strong impulsive interferences. Outer interfaces are the important factor that influences the detection performance. And interference suppression is the essential issue in OTHR signal processing. But the OHTR data are very difficult to obtain, especially the impulsive interference data. This paper constructs the models of various common echoes and interferences. Though the simulation platform, the data including strong clutter and impulsive interferences are generated, which provide abundant data objects for the research such as interference suppression and etc. The simulation data comply perfectly with the real data, which prove the efficiency of the models.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第1期180-186,共7页
Chinese Journal of Scientific Instrument
关键词
天波超视距雷达
瞬态干扰
信号源
仿真平台
over-the-horizon radar （OTHR）
impulsive interference
signal source
simulation platform
