基于酉ESPRIT算法的极化干涉相位估计

被引:5
作者
杨磊
赵拥军
王志刚
机构
[1] 解放军信息工程大学信息工程学院
关键词
极化干涉SAR; 酉ESPRIT; 相位估计;
D O I
暂无
中图分类号
TN958 [雷达:按体制分];
学科分类号
080904 ; 0810 ; 081001 ; 081002 ; 081105 ; 0825 ;
摘要
目前SAR极化干涉测量地形参数已经成为一种新兴的前沿技术。在现有提取极化干涉相位的技术中,由空间谱估计理论发展而来的,利用MUSIC、TLS-ESPRIT算法获取干涉相位信息的方法正逐步完善起来。但由于SAR信号存在散射点的观测数据少的问题,利用上述方法往往不能得到更高精度的干涉相位。作者提出的基于酉ESPRIT算法估算干涉相位的方法,充分利用了复观测数据以及共轭数据中的信息,使得观测数据等效增加了一倍,从而提高了植被高度参数的估计精度。本文详细阐述了该方法的原理和实施步骤,并通过对SIR-C/X-SAR的L波段实际数据进行验证处理,表明酉ESPRIT算法十分有效。
引用
收藏
页码:57 / 59+178 +178
页数:4
相关论文
共 13 条
[1]  
A Technique for Removing Vegetation Bias from Polarimetric SAR Interferometry. Dayalan Kasilingam,Madhukar Nomula,and Shane Cloude. Geoscience and Remote Sensing Symposium,IGARSS’02 . 2002
[2]  
Evaluation of the ESPRITApproach in Polarimetric Interferometric SAR. S Guillaso,AReigber,and L Ferro-Famil. IGARSS’05 . 2005
[3]  
Building Characterisation Using L-Band Polarimetric In-terferometric SAR Data. S Guillaso,L Ferro-Famil,A Reigber,and E Pottier. IEEE Geoscience and Re-mote Sensing Letters . 2005
[4]  
Single Baseline Polari-metric SAR Interferometry. K PPapathanassiou,S R Cloude. IEEE Transacfim Geo-science and Remote Sensing . 2001
[5]  
Robust Parameter Estimation using dual baseline polarimetric SAR Interferometry. S R Cloude. proceed-ings of IEEE International Geoscience and Remote Sens-ing Symposium IGARSS’02 . 2002
[6]  
Analysis of Built-U PAreas from Polarimetric Interfero-metric. S Guillaso,L Ferro-Famil,A Reigber,and E Pottier. Proceedings of IGARSS‘03 . 2003
[7]  
Unitary ESPRIT:How to obtain increased estimation accuracy with a reduced computa-tional burden. Haardt M,Nossek J A. IEEE Transactions on Signal Processing . 1995
[8]  
ESPRIT-Estimation of signal pa-rameters via rotational invariance techniques. R Roy,and T Kailath. IEEE Trans.Acoust.Speech and Signal Processing . 1989
[9]  
Tree Height Retrieval using Single Baseline Polarimetric Interferometry. S R Cloude,D Corr. Proceed-ings of ESA Worksho P,POLInSAR2003 . 2003
[10]  
Polarimetric SAR interferometry for for-est analysis based on the ESPRIT algorithm. Yamada H et al. IEICE Transactions on Electronics . 2001