超宽带雷达自组网的数字波束扫描研究与实现

Implementation and research on digital beam scanning of ad hoc network for ultra wideband radar

概要介绍超宽带雷达自组网方式特点及布站方式,重点分析了超宽带信号时延控制形成波束扫描的实现方法,从而解决阵列延时带来的旁瓣以及低增益的问题。与传统相控阵雷达不同的是不再利用移相器,而是估计出各个阵列的时延并通过整数延迟线和FIR分数滤波器进行精确时延补偿,仿真结果表明,该方式波束方向指向性能好,没有旁瓣。

The simple principle and characteristics of ad hoc network for ultra wideband radar are introduced,the realization on digital beam forming scanning of ad hoc network for ultra wideband radar is analyzed,the side lobe and the low gain caused by the array time delay can be solved.Simulation results show that the method can gain a better performance of beam direction,and suppress side lobe well.