超大阵面分布式相控阵雷达的自-交叉相位定标方法

Self-cross Phase Calibration Method of Oversized Front Distributed Phased Array Radar

针对传统的相控阵雷达定标算法无法适用于超大阵面分布式相控阵雷达的问题,该文提出了自定标、交叉定标相结合的相位定标算法。分析了超大阵面分布式相控阵雷达的误差来源;建立了超大阵面分布式天线阵列在工程约束下的误差模型,详细阐述了自定标和交叉定标的原理和方法,并将该方法从相位单元推广到雷达阵列。最后,对自-相交相位定标算法进行了仿真实验和工程应用。结果表明该算法能大幅提高超大阵面分布式相控阵雷达的主旁瓣电平比。

For an oversized front distributed phased-array radar,the conventional phased-array radar calibration algorithm cannot be applied.Hence,this paper presents a combination of self-and cross-calibration algorithms.For the oversized front distributed phased-array radar,the error sources are analyzed,and the error model is established.Then,the self-and cross-calibration techniques and their principles are presented.In addition,this method is extended to the phased-array radar from units.Finally,we conducted self-intersecting phase calibration simulation experiments,and the results show that the algorithm can significantly improve the sidelobe level of the oversized front distributed phased-array radar.