GNSS-R Observations of Marine Plastic Litter in a Water Flume: An Experimental Study

Gonga, A.; Perez-Portero, A.; Camps, A.; Pascual, Daniel; Fockert, Anton de; Maagt, P. de

doi:10.3390/rs15030637

Cited by 10 publications

(2 citation statements)

References 13 publications

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“…Figure 24) (Evans & Ruf, 2021). In addition, the experimental study used statistical analysis of the reflectivity (phase and amplitude) with a very short integration time and was conducted to detect the accumulation of marine plastic litter (Gonga et al, 2023), while the analysis of the change observed in the reflected power did not show significant results.…”

Section: Microplasticsmentioning

confidence: 99%

Remote sensing and its applications using GNSS reflected signals: advances and prospects

Jin,

Camps,

Jia

et al. 2024

Satell Navig

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The Global Navigation Satellite Systems (GNSS), including the US’s GPS, China’s BDS, the European Union’s Galileo, and Russia’s GLONASS, offer real-time, all-weather, any-time, anywhere and high precision observations by transmitting L band signals continuously, which have been widely used for positioning, navigation and timing. With the development of GNSS technology, it has been found that GNSS-reflected signals can be used to detect Earth’s surface characteristics together with other signals of opportunity. In this paper, the current status and latest advances are presented on Global Navigation Satellite System-Reflectometry (GNSS-R) in theory, methods, techniques and observations. New developments and progresses in GNSS-R instruments, theoretical modeling, and signal processing, ground and space-/air-borne experiments, parameters retrieval (e.g. wind speed, sea surface height, soil moisture, ice thickness), sea surface altimetry and applications in the atmosphere, oceans, land, vegetation, and cryosphere are given and reviewed in details. Meanwhile, the challenges in the GNSS-R development of each field are also given. Finally, the future applications and prospects of GNSS-R are discussed, including multi-GNSS reflectometry, new GNSS-R receivers, GNSS-R missions, and emerging applications, such as mesoscale ocean eddies, ocean phytoplankton blooms, microplastics detection, target recognition, river flow, desert studies, natural hazards and landslides monitoring.

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Section: Microplasticsmentioning

confidence: 99%

Remote sensing and its applications using GNSS reflected signals: advances and prospects

Jin,

Camps,

Jia

et al. 2024

Satell Navig

Self Cite

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“…da Costa et al [121] used a wideband RADAR, 2-20 GHz, showing the capability of the system to detect the plastic for several combinations of plastic concentrations and wave conditions. Gonga et al [122] implemented a global navigation satellite system reflectometry (GNSS-R) setup. GNSS-R is a bistatic RADAR technique which uses satellite navigation signals at the L-band as the transmitter and a receiver installed in a different platform.…”

Section: Radarmentioning

confidence: 99%

Emerging Technologies for Remote Sensing of Floating and Submerged Plastic Litter

Goddijn-Murphy,

Martínez-Vicente,

Dierssen

et al. 2024

Remote Sensing

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Most advances in the remote sensing of floating marine plastic litter have been made using passive remote-sensing techniques in the visible (VIS) to short-wave-infrared (SWIR) parts of the electromagnetic spectrum based on the spectral absorption features of plastic surfaces. In this paper, we present developments of new and emerging remote-sensing technologies of marine plastic litter such as passive techniques: fluid lensing, multi-angle polarimetry, and thermal infrared sensing (TIS); and active techniques: light detection and ranging (LiDAR), multispectral imaging detection and active reflectance (MiDAR), and radio detection and ranging (RADAR). Our review of the detection capabilities and limitations of the different sensing technologies shows that each has their own weaknesses and strengths, and that there is not one single sensing technique that applies to all kinds of marine litter under every different condition in the aquatic environment. Rather, we should focus on the synergy between different technologies to detect marine plastic litter and potentially the use of proxies to estimate its presence. Therefore, in addition to further developing remote-sensing techniques, more research is needed in the composition of marine litter and the relationships between marine plastic litter and their proxies. In this paper, we propose a common vocabulary to help the community to translate concepts among different disciplines and techniques.

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Assessing the detection of floating plastic litter with advanced remote sensing technologies in a hydrodynamic test facility

de Fockert,

Eleveld,

Bakker

et al. 2024

Sci Rep

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Remote sensing technologies have the potential to support monitoring of floating plastic litter in aquatic environments. An experimental campaign was carried out in a large-scale hydrodynamic test facility to explore the detectability of floating plastics in ocean waves, comparing and contrasting different microwave and optical remote sensing technologies. The extensive experiments revealed that detection of plastics was feasible with microwave measurement techniques using X and Ku-bands with VV polarization at a plastic threshold concentration of 1 item/m 2 or 1–10 g/m 2 . The optical measurements further revealed that spectral and polarization properties in the visible and infrared spectrum had diagnostic information unique to the floating plastics. This assessment presents a crucial step towards enabling the detection of aquatic plastics using advanced remote sensing technologies. We demonstrate that remote sensing has the potential for global targeting of plastic litter hotspots, which is needed for supporting effective clean-up efforts and scientific evidence-based policy making. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-74332-5.

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GNSS-R Observations of Marine Plastic Litter in a Water Flume: An Experimental Study

Cited by 10 publications

References 13 publications

Remote sensing and its applications using GNSS reflected signals: advances and prospects

Remote sensing and its applications using GNSS reflected signals: advances and prospects

Emerging Technologies for Remote Sensing of Floating and Submerged Plastic Litter

Assessing the detection of floating plastic litter with advanced remote sensing technologies in a hydrodynamic test facility

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