Rommel, Tobias and Huber, Sigurd and Younis, Marwan and Chandra, Madhu (2021) Matrix Pencil Method for Topography-Adaptive Digital Beam-Forming in Synthetic Aperture Radar. IET Radar, Sonar & Navigation. Institution of Engineering and Technology (IET). doi: 10.1049/rsn2.12103. ISSN 1751-8784.
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Abstract
Spaceborne Synthetic Aperture Radar (SAR) with Digital Beam-Forming (DBF) in elevation uses very sharp time-variant antenna beams to increase the Signal-to-Noise Ratio (SNR) and the Range Ambiguity to Signal Ratio (RASR). However, in acquisition scenarios of imprecisely known Earth topography the antenna pointing might be mismatched with the surface geometry. To handle this issue, it is suggested to apply pre-processing to DBF, which determines the angle of the incident echo signal on the planar antenna array. In this paper an innovative method is derived, which estimates the direction of arrival on the acquired raw-data with high accuracy and in real-time. The method is based on the matrix pencil, which is a common approach in mathematics for solving linear equation systems. As a key innovation this paper describes further improvements and adaptions to SAR scenarios and gives a possible concept of practical implementation. For proof of concept a series of different simulation tasks is performed.
Item URL in elib: | https://elib.dlr.de/141462/ | ||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||
Title: | Matrix Pencil Method for Topography-Adaptive Digital Beam-Forming in Synthetic Aperture Radar | ||||||||||||||||||||
Authors: |
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Date: | 22 May 2021 | ||||||||||||||||||||
Journal or Publication Title: | IET Radar, Sonar & Navigation | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | Yes | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||
DOI: | 10.1049/rsn2.12103 | ||||||||||||||||||||
Publisher: | Institution of Engineering and Technology (IET) | ||||||||||||||||||||
ISSN: | 1751-8784 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | SAR, synthetic aperture radar, DBF, digital beam-forming, topography, SCORE, AoA, DoA, matrix pencil | ||||||||||||||||||||
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 - Development of a mini-SAR | ||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||
Institutes and Institutions: | Microwaves and Radar Institute > SAR Technology | ||||||||||||||||||||
Deposited By: | Rommel, Tobias | ||||||||||||||||||||
Deposited On: | 23 Mar 2021 12:18 | ||||||||||||||||||||
Last Modified: | 24 May 2022 23:47 |
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