摘要
被动雷达导引头中多基线相位干涉仪在宽带测向时存在角度模糊,针对这一问题,文中提出了一种基于虚拟短基线依次解模糊的相位干涉仪测向方法,该方法既不需要最短基线长度小于入射波的半波长,也不需要基线的尺寸满足参差关系,解决了增大最大无模糊角度与测向带宽之间的矛盾,易于工程实现。详细讨论了虚拟短基线正确解模糊的信噪比要求和通道相位一致性条件,仿真结果表明了理论分析的正确性。
In wideband passive radar seeker（PRS） system, multl-baseline phase interferometer has angle ambiguity in DOA estimation. In order to solve this problem, an ordinal ambiguity resolution method based on virtual short baseline is proposed. It solves the contradiction between the maximal unambiguous angle and direction finding bandwidth. The shortest baseline can be longer than the half-wavelength of the incident signal, and the length of the baselines can not be stagger. The method is very practical. The SNR limitation and channel phase consistency condition of solving ambiguity correctly is discussed in detail. The correctness of theoretic analysis is effectively demonstrated by computer simulation.
出处
《弹箭与制导学报》
CSCD
北大核心
2007年第4期92-95,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
被动雷达导引头
角度模糊
虚拟短基线
通道相位一致性
passive radar seeker
angle ambiguity
virtual short baseline
channel phase consistency
