摘要
外辐射源雷达系统具有隐蔽性好、反隐身能力及抗干扰能力强、系统简单可靠等优点,近年来受到各国的重视,得到了较快的发展。该文从分析电视信号模糊函数入手,利用实测数据分析了基于电视信号的外辐射雷达测量直达波与目标回波之间时延的可行性。通过仿真分析得出电视信号不是一种理想的雷达信号,且测量目标回波与直达波之间的时延存在较大困难。最后,文中建议采用英国UCL大学How land P E等且提出的方案。
The passive radar based on external illuminator has many advantages, such as good invisibility, anti-stealth, anti-jam- ming capability, and it is simple and reliable. Recently, the passive radar attracted more and more attention, so the technology of passive radar is developing rapidly. In this paper, based on the actual data, the ambiguity function of TV signal is analyzed first; then the methods to measure the time delay between the direct signal and echo of object in passive radar based on TV signal is also studied. The result of simulation shows that the TV signal is not an ideal radar signal and it is difficult to measure the time delay between the direct signal and echo of object. So the methods proposed by P.E. Howland is justified as reasonable.
出处
《现代雷达》
CSCD
北大核心
2009年第8期21-24,共4页
Modern Radar
关键词
外辐射源雷达
时延
模糊函数
passive location
time delay
ambiguity function
