摘要
讨论合成孔径雷达(syntheticapertureradar,SAR)子孔径聚束算法的数学模型,提出一种新方法—子孔径参考信号相位对齐算法。该方法本质是将各个子孔径参考信号的相位调整为同相,然后构造新的聚束窗函数进行SAR成像。理论分析表明,在不增加采样数据的条件下,该方法能增大雷达方位向成像场景范围。计算机仿真结果证实了该方法的正确性。
The model of SAR subaperture spotlighting algorithm is discussed. A novel method called phase alignment algorithm of subaperture reference signal is presented. The algorithm adjusts phases of respective subaperture reference signals in ordre to make them be in phase and constructs a new spotlighting window function for SAR imaging. Through theoretical analysis the conclusion is obtained, that is, under the condition of the same sample data, the novel method can increase SAR scene area in azimuth dimension. The method is verified by the results of computer simulation.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2004年第12期1763-1766,共4页
Systems Engineering and Electronics
基金
"十五"国防预研基金资助课题(41101030203)
关键词
合成孔径雷达
子孔径聚束
相位对齐
synthetic aperture radar
subaperture spotlighting
phase alignment
