摘要
针对现有包络对齐方法存在对齐精度较低的缺点,该文在包络相关法的基础上,利用Fourier变换的频域移位性质,提出了改进的包络相关法。该方法在常规包络相关法的基础上进行几次迭代,显著地提高了包络对齐的精度。仿真数据和外场实测数据的处理结果都表明,该文方法能显著改善逆合成孔径雷达(ISAR)的成像质量,且运算量增加不多。
In view of the limitation of the accuracy of all the existing range alignment methods, an improved envelope correlation method is proposed based on the frequency shifting property of Fourier transform. The computer simulation data and real ISAR （inverse synthetic aperture radar） data are used to demonstrate its performance. The results show that the proposed method can improve the imaging quality of ISAR significantly at the cost of not too much additional computation load.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2007年第2期184-186,228,共4页
Journal of Nanjing University of Science and Technology
基金
国家"863"计划(2002AA731142)
关键词
逆合成孔径雷达
运动补偿
包络对齐
相关函数
inverse synthetic aperture radar
motion compensation
range alignment
correlation function
