星载SAR相控阵天线栅瓣抑制技术  

Grating Lobes Suppression in Phased Array Antenna for Space-Borne SAR Applications

作　　者：鲁加国[1] 汪伟[1] 齐美清[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《微波学报》2013年第5期135-138,共4页Journal of Microwaves

摘　　要：针对星载合成孔径雷达子阵级二维有源相控阵天线方位向扫描出现较大栅瓣问题进行了分析。采用子块错位分布方式抑制天线阵栅瓣最大电平值,结合工程可实现性,优化出子阵最佳错位分布。结果表明,经过优化后的天线阵,其方位向扫描最大栅瓣电平得以有效抑制,这对于星载合成孔径雷达图像质量改善具有现实意义。： The grating lobes of the azimuth scanning angle of a 2-dimension active phased array for space borne syn- thetic aperture radar （SAR） applications are studied, with the subarray technology used in the array. The grating lobes peak level is reduced by means of tiles arranged into a staggered grid with the manufacture convenience taken into account. The optimized array illuminates that the peak grating lobe level is suppressed effectively. It is important to improve the image quality of the space-borne SAR applications.

关 键 词：合成孔径雷达 相控阵天线 子阵 栅瓣 

分 类 号：TN821.8[电子电信—信息与通信工程]