欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
当SAR回波数据的信噪比较低时,准确估计多普勒调频率变得十分困难.提出了一种基于子空间投影技术的多普勒调频率估计方法.该方法利用不同距离单元的观测矢量构造协方差矩阵,然后通过对协方差矩阵特征分解得到噪声子空间,最后将相位误差矢量向噪声子空间投影来估计多普勒调频率.在信噪比较低的条件下此方法可以稳健地估计多普勒调频率.
英文摘要：
It is difficult to estimate Doppler rate accurately when the Signal-to-noise ratio （SNR） of SAR echo is low. A Doppler rate estimation method based on sub-space projection technique was proposed. This method constructs covariance matrix by utilizing data vectors in different range lines and projects phase error vector into noise sub-space which is formed by eigendecomposing the covariance matrix. The proposed method may estimate Doppler rate robustly in the case of low SNR.
同期刊论文项目
同项目期刊论文
期刊信息
位置：