FDA-MIMO抗干扰技术进展及前景展望

Progress and Prospect of FDA-MIMO Anti-jamming Technology

与相控阵发射波束只有角度依赖性不同,频控阵(FDA)通过在阵元上附加一个频偏增量,使其具有距离-角度二维依赖特性,不仅解决了波束发射时的角度指向问题,还可以解决波束发射时的距离指向问题。通过在FDA中引入MIMO,可以将发射信息整合到接收端,从而实现更加灵活的距离维自由度利用,提升距离-角度二维联合信号处理的能力,这使得FDA-MIMO在抗距离维主瓣欺骗干扰方面具有独特的应用优势。针对FDA-MIMO良好的抗干扰特性,介绍了FDA-MIMO的基本原理和模型,从抗干扰的角度全面梳理了FDA-MIMO的国内外研究进展,对FDA-MIMO雷达抗干扰的基本原理和主要技术进行了系统性讨论总结,分析了FDA-MIMO等频控阵雷达技术在抗干扰方面未来主要的应用前景。

The transmitted beam of the phased array only has angle dependence.In contrast Frequency Diverse Array(FDA)adds an increment of frequency offset between the array element to make it display the characteristics of range-angle two-dimensional dependence which not only solves the problem of angle pointing during beam transmission but also solves the problem of distance pointing during beam transmission.By introducing MIMO into FDA the transmitted information can be integrated into the receiver thus realizing more flexible utilization of range dimension Degrees of Freedom(DOF)and improving the ability of range-angle two-dimensional joint signal processing which gives FDA-MIMO unique application advantages in countering range-dimension main lobe deception jamming.In view of the good anti-jamming characteristics of FDA-MIMO the basic principle and model of FDA-MIMO are introduced the research progress of FDA-MIMO at home and abroad is summarized from the perspective of anti-jamming the basic principle and main techniques of FDA-MIMO radar anti-jamming are systematically discussed and summarized and the main application prospects of FDA-MIMO and other FDA radar technologies in anti-jamming in the future are analyzed.