Comparison of multiple scatterer detection methods in differential SAR tomography

Ziye Guo; Hui Liu; Yuxi Jiang; Bihui Cheng; Xinyu Guo; Shuaihua Tian

doi:10.1117/12.2607944

15 February 2022 Comparison of multiple scatterer detection methods in differential SAR tomography

Ziye Guo, Hui Liu, Yuxi Jiang, Bihui Cheng, Xinyu Guo, Shuaihua Tian

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 1216612 (2022) https://doi.org/10.1117/12.2607944
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

Synthetic aperture radar (SAR) tomography is a technique that offers new perspectives in the 4-D reconstruction (3-D spatial information plus deformation information), particularly, of urban areas. SAR tomography allows resolving layovers by handle the situation where multiple scatterers exist within a resolution cell. The detection of scatterers is however a critical and challenging issue. Single scatterers can be simply detected by the amplitude dispersion method, but it does not meet the application needs of urban buildings. In this paper, we study a variety of methods for scatterer detection in differential SAR Tomography. We mainly investigate three detection approaches based on signal estimation and detection: sequential generalized likelihood ratio test (SGLRT), sup-GLRT, and fast-sup-GLRT. Firstly, theoretical performances of each method are analyzed in details. Secondly, experimental validation is carried out through simulation data and real data from TerraSAR-X satellite corresponding to a building—North Star Times Tower in Beijing, China. Finally, we compared the signal detecting based methods involved in this paper, with the compressed sensing (CS) methods (e.g., regularized orthogonal matching pursuit (ROMP) and L1-norm regularization). The results demonstrate that the CS methods achieve only the spatial information of the scatterers, whereas the signal detecting based methods are capable of obtaining the backward scattering power information of each scatterer in parallel with the spatial information. This leads to the conclusion that the signal detecting based methods gain more information about the scatterer than the CS-based methods. Furthermore, the detection accuracy and time cost of the aforementioned methods are presented and discussed.

Citation Download Citation

Ziye Guo, Hui Liu, Yuxi Jiang, Bihui Cheng, Xinyu Guo, and Shuaihua Tian "Comparison of multiple scatterer detection methods in differential SAR tomography", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 1216612 (15 February 2022); https://doi.org/10.1117/12.2607944

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Signal detection

Synthetic aperture radar

Tomography

Sensors

Buildings

Compressed sensing

Scattering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years