船载天线雷达系统优化建模与仿真研究

Research on Optimization Modeling and Simulation of Shipborne Radar Antenna System

由于船载天线雷达系统结构较为复杂,其伺服系统和机械结构虽然存在较多耦合,但是在仿真过程中往往被分开进行建模和研究,这使得建模得到的天线系统模型的整体性和逼真度不足。针对上述情况,提出了一种将天线伺服机理与动力学结合的建模仿真方法。首先根据先验知识搭建了天线伺服系统机理模型并通过系统辨识进行优化,再根据天线运动特性搭建了天线系统的动力学模型,最后在软件仿真环境中将上述模型模块进行整合联调并测试。通过与实装设备进行实验比较和数据对比,结果表明建模得到的天线系统模型的逼真度较高,能够满足船载天线系统仿真的需要。

Because the structure of Shipborne antenna radar system is complex,although its servo system and mechanical structure are very coupled,they are often modeled and researched separately in the simulation process,which makes the antenna system model lack of integrity and fidelity.In this case,a modeling and simulation method which combines the antenna servo mechanism with the dynamics is proposed.First,the mechanism model of antenna servo system which is optimized by system identification is constructed according to prior knowledge.Then,the dynamic model of antenna system is built according to the antenna motion characteristics.Finally,the model modules are integrated and tested in the software simulation environment.Through the experiment data comparison and contrast with the actual equipment,the results show that the antenna system model has high fidelity,which can meet the need of shipborne antenna system simulation.