一种新的雷达信号旋转干涉仪测向解模糊算法  

A New Method for Ambiguity Solving Based on Rotary Interferometer

作　　者：何明[1] 李昀豪[1] 唐斌[1] 

机构地区：[1]电子科技大学电子工程学院,成都611731

出　　处：《电讯技术》2013年第3期297-301,共5页Telecommunication Engineering

摘　　要：研究了一种新的旋转干涉仪测向解模糊算法。首先分析了旋转干涉仪测向时的相位差变化规律,然后针对Ka频段雷达信号在使用旋转干涉仪测向时相位差变化大的问题,建立了进行两次修正的解模糊算法。该方法硬件实现结构简单,易应用于被动导引头中。通过计算机仿真验证算法的稳定性,结果表明,当信噪比高于-8 dB时,解模糊成功率超过90%。Based on rotary interferometer, an approach for phase difference measurement and ambiguity solving is presented. First the changes of phase difference are analyzed when using a rotating interferometer to find direc- tion, then aiming at the problem that for Ka-band radar signals the phase difference becomes greater when using a rotating interferometer to find direction, twice modified ambiguity solving algorithm is established. Adopting this method, the hardware structure is easy to be achieved in the passive seeker. According to the simulation re- suit, probability of ambiguity solving is better than 90% when SNR （Signal-to-Noise Ratio） is above - 8 dB.

关 键 词：Ka频段雷达信号 旋转式干涉仪 测向 解模糊 被动导引头 

分 类 号：TN971.1[电子电信—信号与信息处理]