摘要
基于FM广播的无源探测系统,因为其抗隐身、反侦察、生存能力强和可靠性高等特点,成为现有探测技术的一种有效补充,备受各国重视。在实际工程应用中,经常受到临近城市间的同频或临频电台信号干扰,严重削弱了该体制雷达的性能,限制了其应用。针对这种情况,分析了干扰电台信号对系统的干扰原理,给出了抑制这种干扰的自适应算法。对实际信号的仿真结果表明,该方法有效地抑制了电台干扰信号,检测到干扰抑制前系统无法检测到的目标。
Because of the merits of anti-stealth, anti reconnaissance, strong survivability, and high reliability, the passive detection system based on FM broadcast has attracted much attention and become one kind of efficient supplement to current detection technique. But in practice, the system is often jammed by the radio at the same or adjacent frequencies from the neighboring cities. In the situation, the system performance will degrade greatly and the application will be limited. Considering this, in this paper we first analyze the in fluence of the jam radio to the system, then present an adaptive algorithm for jamming suppression. It is indicated from the experimentally derived data that the method can effectively suppress the jamming and make the system detect the targets which can not be detected before using the method.
出处
《雷达科学与技术》
2010年第1期1-6,共6页
Radar Science and Technology
关键词
无源探测系统
FM广播
自适应对消
干扰抑制
passive detection system
FM broadcast
adaptive cancellation
jamming suppression
