一种平面天线阵列方向图图形化仿真方法

Graphic Method to Simulate Planar Arrays Pattern

平面阵列方向图计算在飞行仿真过程中因耗费计算资源而拖慢毫秒级的仿真同步进程。针对这一问题提出了一种图形化的方向图仿真计算方法。解析理想方向图在三维立体空间上的典型图形特征以及空间剖面特征,在平面坐标系下利用Sinc函数构造能够再现该图形特征的核函数模型,将该核函数图形作为剖面在空间坐标系下进行旋转,得到仿真方向图。仿真结果表明:这种图形化计算方法能够快速逼真再现平面阵列的理想方向图并满足系统的实时同步要求。

Calculating planar arrays pattern is time-consuming in flight simulation whose frame synchronization time is within tens of milliseconds and this would cause removing frames. To resolve this problem, a graphic simulation method was presented to simulate planar arrays' pattern. Based on analyzing ideal patterns' graphic characteristics, a kernel function was constructed whose graphics could reflect all those pattern's characteristics. Then this kernel's graphics being used as a section plane were rotated in the spatial coordinates to match the ideal pattern. The simulation results show that this method can be rapidly calculated and the simulated pattern is highly true to the ideal pattern.