对T/R组件频响不一致性对星载合成孔径雷达SAR系统性能的影响进行了分析 ,并用实测T/R组件数据进行了验证。理论分析与计算结果表明 ,随着T/R组件数量的增大 ,系统对T/R组件的频响一致性的要求将会降低。此外 ,因为天线的副瓣电平是不同频率信号贡献的平均值 ,所以天线副瓣电平的大小依赖平均T/R组件的不一致性

The effects of frequency response characteristics of T/R modules on spaceborne Synthetic Aperture Radar system performances are analyzed and the results verified by measured T/R modules data. Theoretical analysis and computation show that the demands on frequency response consistency of T/R modules will decrease with the increase of T/R modules. In addition, antenna sidelobe level depends on average inconsistency of T/R modules since sidelobe level is determined by averaging contributions of different frequencies in the wide-band signal. [

TN959.74