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Motion Compensation for Accurate Position Estimation of Ground Moving Targets using the Multi-Channel Airborne System DBFSAR

Barros Cardoso da Silva, Andre and Joshi, Sushil Kumar and Baumgartner, Stefan V. (2021) Motion Compensation for Accurate Position Estimation of Ground Moving Targets using the Multi-Channel Airborne System DBFSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2022-07-25 - 2022-07-27, Leipzig, Germany.

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Abstract

The accurate estimation of the target’s position on the ground is a crucial step for air-based surveillance systems. For the particular case of radar systems with multiple receive channels, the target’s position on the ground can be accurate-ly obtained after estimating its direction-of-arrival (DOA) angle. The problem is that, in practice, the aircraft’s motion tilts the antenna array and introduces undesired phase differences among the receive channels. Consequently, the DOA angle estimation accuracy can be severely impacted. This paper presents a fast and robust algorithm for correcting the undesired phases differences introduced by the aircraft’s motion among the multiple receive channels. The proposed algorithm is tested and validated using simulated radar data as well as radar data acquired with the DLR’s new multi-channel airborne system digital beamforming SAR (DBFSAR).

Item URL in elib:https://elib.dlr.de/145850/
Document Type:Conference or Workshop Item (Speech)
Title:Motion Compensation for Accurate Position Estimation of Ground Moving Targets using the Multi-Channel Airborne System DBFSAR
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Barros Cardoso da Silva, AndreAndre.Silva (at) dlr.dehttps://orcid.org/0000-0001-5056-4013
Joshi, Sushil KumarSushil.Joshi (at) dlr.dehttps://orcid.org/0000-0002-4494-5255
Baumgartner, Stefan V.Stefan.Baumgartner (at) dlr.dehttps://orcid.org/0000-0002-8337-6825
Date:November 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Ground moving target indication (GMTI), radar signal processing, calibration, synthetic aperture radar (SAR), radar applications, airborne radar, maritime safety.
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Leipzig, Germany
Event Type:international Conference
Event Dates:2022-07-25 - 2022-07-27
Organizer:VDE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - D.MoVe
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Barros Cardoso da Silva, Andre
Deposited On:16 May 2022 06:11
Last Modified:16 May 2022 06:11

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