适于弹载平台的正交多载波雷达波形设计

设计了一种适于弹载平台的多载波雷达波形,模糊函数近似理想图钉型,且波形设计灵活,参数选择自由度高,与传统的单载波雷达波形相比,被截获概率大大降低。给出了一种具有9个子载波数量的雷达基带波形设计方案,为进一步改善主副瓣比,采用了脉间波形捷变及子载波频域加权技术,实现结果表明在基带信号带宽为9 MHz时主副瓣比可达-35 d B以下,且不同调制序列得到的雷达波形具有良好的低互相关特性,特别适合于多部弹载雷达协同工作场合。

Orthogonal Multi-carrier Radar Waveform Design for Missile-based Platform

A multi-carrier radar waveform for missile-based radar is designed,whose ambiguous function can approach ideal thumbtack pattern. Furthermore,flexibility of designed radar waveform is very outstanding,and waveform parameters can be modified freely according to different requirements. Compared with classic single-carrier radar waveforms,probability of interception is also decreased greatly. A baseband radar waveform design strategy with 9 sub-carriers is presented, to reduce sidelobe of distance-dimension data,inter-pulse waveform agility and sub-carrier weighting window technology can be adopted, too. Implemented results showed that when baseband signal width is 9MHz,corresponding mainlobe sidelobe ratio can be lower than -35dB. Besides,different sub-carrier modulation sequence pattern can acquire enormous waveform with wonderful low cross-correlation level,which is much practical especially for multiple missile-based radar co-working system.