Rodrigues Silva Filho, Eduardo and Rodriguez Cassola, Marc (2022) Experimental Evaluation of GNSS-Based Frequency Synchronization for SAR Applications. In: International Geoscience and Remote Sensing Symposium (IGARSS). IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2022-07-17 - 2022-07-22, Kuala Lumpur, Malaysia. doi: 10.1109/IGARSS46834.2022.9883501.
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Abstract
Phase synchronization is a crucial requirement for bistatic and multistatic SAR missions. One possible solution for this problem could be to use the same master oscillator for the radar payload and the GNSS receiver, which could allow the recovery of the oscillator phase noise from the carrier phase measurements. This solution would be cost-effective and straightforward, but its effectiveness depends on whether the GNSS receiver would maintain the spectral purity of the master oscillator internally. We executed zero and short baseline experiments to evaluate this technique with a commercial receiver. Despite some unexpected signatures on the carrier phase single-difference measurements, we achieved frequency synchronization of less than 10 ppm and phase synchronization of less than one degree at the L1 carrier frequency after applying a moving average filter of one second at a 10 Hz sampling rate. The results suggest the feasibility of the GNSS-based phase synchronization concept, but further experiments are necessary to evaluate it thoroughly.
Item URL in elib: | https://elib.dlr.de/186490/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Experimental Evaluation of GNSS-Based Frequency Synchronization for SAR Applications | ||||||||||||
Authors: |
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Date: | 2022 | ||||||||||||
Journal or Publication Title: | International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
DOI: | 10.1109/IGARSS46834.2022.9883501 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Bistatic radar, multistatic radar, frequency synchronization, phase synchronization, GNSS | ||||||||||||
Event Title: | IEEE International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||||||||
Event Location: | Kuala Lumpur, Malaysia | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 2022-07-17 - 2022-07-22 | ||||||||||||
Organizer: | IEEE GRSS | ||||||||||||
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 - SAR missions, R - Polarimetric SAR Interferometry HR | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Microwaves and Radar Institute | ||||||||||||
Deposited By: | Rodrigues Silva Filho, Eduardo | ||||||||||||
Deposited On: | 09 Jun 2022 07:17 | ||||||||||||
Last Modified: | 01 Aug 2023 14:37 |
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