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Definition of Tomographic SAR Configurations for Forest Structure Applications at L-Band

Cazcarra-Bes, Victor and Pardini, Matteo and Papathanassiou, Konstantinos (2020) Definition of Tomographic SAR Configurations for Forest Structure Applications at L-Band. IEEE Geoscience and Remote Sensing Letters. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/LGRS.2020.3027439. ISSN 1545-598X.

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Official URL: https://ieeexplore.ieee.org/document/9224742


Synthetic aperture radar tomography (TomoSAR) at lower frequencies allows the reconstruction of the 3-D radar reflectivity of volume scatterers allowing access to their physical 3-D structure by means of multiangular SAR acquisitions. The performance of the reconstruction critically depends on the number and (spatial) distribution of the tomographic acquisitions (tracks). This dependence is addressed in this letter with respect to forest applications (volume scatters) at L-band. The letter discusses the optimum definition of tomographic configurations based on the peak sidelobe level (PSL) of the point spread function (PSF). For demonstration, a tomographic data set consisting of 15 acquisitions acquired by the DLR's F-SAR system at L-band over the Traunstein test site in Germany is used, complemented by airborne LiDAR measurements. Three different reconstruction algorithms (Fourier beamforming, Capon beamforming, and compressive sensing) are implemented and compared to each other for scenarios with a reduced number of acquisitions. Although the limitation of the specific forest, the results show the potential of using the PSL of the PSF to define tomographic configurations optimized for forest structure applications.

Item URL in elib:https://elib.dlr.de/136699/
Document Type:Article
Title:Definition of Tomographic SAR Configurations for Forest Structure Applications at L-Band
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Cazcarra-Bes, VictorUNSPECIFIEDhttps://orcid.org/0000-0002-6776-4553UNSPECIFIED
Pardini, MatteoUNSPECIFIEDhttps://orcid.org/0000-0003-2018-7514UNSPECIFIED
Date:15 October 2020
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Baseline configuration, forest structure, L-band, spatial distribution of acquisitions, synthetic aperture radar tomography (TomoSAR)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben Multi-dimensionale SAR-Auswertung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Cazcarra-Bes, Victor
Deposited On:19 Oct 2020 08:50
Last Modified:05 Dec 2020 15:10

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