一种天线配置软件定义雷达架构研究

Research on Antenna Reconfigured Software Defined Radar Architecture

针对目前雷达功能单一,品种较多,提升雷达功能需要更换大部分硬件(尤其天线系统)的问题,提出一种通过天线配置实现软件定义雷达的开放式系统架构。该架构的发射信号基于阵列单元通过软件任意产生,天线可按系统功能通过软件编码控制任意裁剪且可重构。天线单元阵列射频端直接连接二相编码调制器,通过正交二相编码调制,突破了单通道任意数字波束形成,解决了通道一致性问题,使得天线配置更加灵活。该架构不仅可应用于常规相控阵雷达,还可应用于MIMO、认知、雷达通信一体化等。通过软件定义开发的多路复用数字波束雷达系统平台,已经完成实际外场测试,表明基于软件定义的多路复用数字波束相控阵雷达技术系统应用可行。

For the problem of radar function simplification and variety of the radar,it need to change most hardware for upgrading radar function at present(in particular antenna system),open system architecture by antenna reconfigured to achieve software defined radar is proposed.The transmission signal of the architecture is arbitrarily generated via software based on array unit and the antenna can be arbitrarily cut out via software coding according to system function and be reconfigured.The RF end of antenna unit is directly connected to bi-phase code modulator,by orthogonal bi-phase code modulating the single channel arbitrary digital beam forming can be broken through and the channel consistence problem can be resolved,so the antenna configuration can be more flexible.The architecture can be used not only in conventional phased array radar,but also in MIMO,cognitive radar and radar and communication integration.The field test has been accomplished for multichannel multiplex digital beam radar system platform based on software defined development;it has been proved that the architecture of the radar system is feasible.