基于PGA的多普勒调频斜率估计  

The Doppler Rate Estimation with the PGA

作　　者：雷万明[1] 胡学成[1] 倪晋麟[1] 

机构地区：[1]南京电子技术研究所,江苏南京210013

出　　处：《电子学报》2004年第6期1017-1019,共3页Acta Electronica Sinica

摘　　要：本文详细地分析了多普勒调频斜率误差与相位梯度的关系 ,提出了基于PGA的多普勒调频斜率估计算法 ,并进行了仿真和机载SAR数据的成像实验 .理论和成像实验结果表明 ,该算法具有运算量小、收敛速度快和估计精度高的特点 .This paper analyzes the relation between the Doppler rate and phase gradient,and proposes algorithm for the Doppler rate estimation with the PGA,then the performance of this algorithm is verified by the computer simulation data and airborne SAR data.The result of theoretical analysis and simulation shows that this algorithm has less operation load and faster convergence speed as well as the improved estimation accuracy.

关 键 词：PGA SAR 相位梯度 多普勒调频斜率 

分 类 号：TN958[电子电信—信号与信息处理]