摘要
介绍了星载合成孔径雷达 (SAR)固态有源相控阵天线工程设计的基本方法。根据性能要求 ,对相控阵天线进行了阶梯幅度量化 ,以减少T/R组件的品种数。采用相位加权改变仰角的波束宽度 ,给出了方向图的仿真结果。对相控阵天线的阵面误差、天线增益、最大副瓣电平和波束指向误差进行了近似计算 。
This paper presents the basic method of engineering design for solid state active phased array antenna, which is applied in spaceborne syntheic aperture radar. In accordance with the performance requirement, it is proved that stepped amplitude quantization of phased array antenna can decrease the numbers of types of T/R modules. It applies phase weight which can spread beam in elevated direction, and it presents the simulation results of directional pattern. It computes the array plane error, antenna gain, maximum sidelobe levels and beam pointing error of phased array antennas, moreover, it gives the computed results in detail.
出处
《上海航天》
2003年第2期7-13,26,共8页
Aerospace Shanghai
