微波系统仿真中赋形波束的设计评估

The Design and Evaluation of the Shaped Beam in Microwave System Simulation

相控阵雷达微波系统仿真结果是雷达方案设计的重要依据,如何在系统建模条件下对微波系统进行评估具有重要价值。阵列天线作为微波系统的重要组成部分之一,其各项指标能够决定系统的整体性能。针对相控阵天线的波束赋形问题,应用粒子群算法对天线单元的幅度和相位进行了优化计算,并在系统仿真软件SystemVue中搭建了阵列天线模型,方向图仿真结果与微波暗室测试结果基本一致,验证了该方法的正确性。此外,该模型能够作为微波系统仿真模型的一部分,对整个雷达系统特性进行评估。

The simulation result of microwave system is an important basis for the design of phased array radar. It is significant to evaluate the design indicators of microwave system in the radar system model. As one of the most important parts of microwave system, the phased array antenna can determine the performance of the radar system. In this paper, the amplitude and phase of the array elements is designed and optimized by particle swarm optimization for synthesis of shaped beam. Then the model of phased array antenna is constructed by means of system simulation software SystemVue. The patterns of the array antenna are calculated and compared with the test results of the microwave anechoic chamber, which verified the correctness of this method. Furthermore, the constructed model can be a part of the microwave system simulation model, which can evaluate the characteristics of the radar system.