Title :
Sparsity analysis of SAR signal and three-dimensional imaging of sparse array SAR
Author :
Daojing Li ; Qingjuan Zhang ; Liechen Li ; Ying Xi
Author_Institution :
Sci. & Technol. on Microwave Imaging Lab., Inst. of Electron., Beijing, China
Abstract :
This paper analyses the sparsity of SAR signal under the multi-antenna observation structure. Based on the sparsity of continuous scene spectrum and sparsity of target scene, a down-sampling method is proposed and side-looking 3D imaging of cross-track sparse array SAR is investigated. Imaging results on simulation and real data are given to verify the proposed method.
Keywords :
compressed sensing; geophysical image processing; image reconstruction; remote sensing by radar; synthetic aperture radar; SAR signal; continuous scene spectrum; cross-track sparse array SAR; down-sampling method; multiantenna observation structure; sparsity analysis; target scene sparsity; three-dimensional imaging; Antenna arrays; Apertures; Arrays; Azimuth; Image resolution; Imaging; Three-dimensional displays; Sparse array; signal reconstruction; sparsity analysis; three-dimensional imaging;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6721303
