Title :
Application of Spatial Spectrum Estimation Technique in Multibaseline SAR for Layover Solution
Author :
Wang, Bin ; Wang, Yanping ; Hong, Wen ; Wu, YiRong
Author_Institution :
Nat. Key Lab. of Microwave Imaging Technol., Beijing
Abstract :
Spatial spectrum estimation technique is applied to resolve layover effect with multi-baseline synthetic aperture radar (SAR) in the paper. Based on the signal model of multi-baseline SAR, the mathematical principle of layover solution with spectrum estimation is derived. The main steps of spatial spectrum estimation technique for layover solution in multi-baseline SAR are obtained. In order to deal with the spectrum ambiguity problem generated by FFT method under limited multi-baseline SAR data, we introduce the Yule-Walker method for spectrum estimation to resolve layover effect. We analyze the principle of Yule-Walker method for performance improvement, and give the processing steps using Yule-Walker method for layover solution in detail. The simulation results for layover solution with FFT method and Yule-Walker method are realized and compared.
Keywords :
geophysical signal processing; geophysical techniques; radar signal processing; remote sensing by radar; synthetic aperture radar; FFT method; Yule-Walker method; layover effect solution; multibaseline SAR signal model; spatial spectrum estimation technique; spectrum ambiguity problem; synthetic aperture radar; Azimuth; Focusing; Laboratories; Mathematical model; Performance analysis; Signal resolution; Spatial resolution; Spectral analysis; Synthetic aperture radar; Synthetic aperture radar interferometry; Layover; SAR; Yule-Walker method; multi-baseline; spatial spectrum estimation;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4779556
