Dr. Pepe L. Phillips Profile

Dr. Pepe L. Phillips

at EUMETSAT

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 9 October 2018 Presentation + Paper

Validation activities for the level 2 geophysical products of the EUMETSAT Polar System-Second Generation (EPS-SG) visible/infrared imager (METimage)

L. Spezzi, R. Borde, P. Phillips, P. Schlüssel, P. Watts

Proceedings Volume 10786, 1078603 (2018) https://doi.org/10.1117/12.2325586

KEYWORDS: Clouds, Satellites, Imaging systems, Aerosols, Visible radiation, Prototyping

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The EPS-SG Visible/Infrared Imaging mission is dedicated to supporting the optical imagery user needs for Numerical Weather Prediction (NWP), Nowcasting (NWC) and climate in the 2020 onwards timeframe. The VII mission is fulfilled by the METimage instrument, to be embarked on the Metop-SG-A satellites. METimage will fly in the mid-morning orbit of the Joint Polar System, whilst the early-afternoon orbits are served by the JPSS (U.S. Joint Polar Satellite System) Visible Infrared Imager Radiometer Suite (VIIRS). METimage is a cross-purpose medium resolution, multispectral optical imager, measuring radiation emitted and reflected by the Earth from a low-altitude sun synchronous orbit with a minimum swath width of 2700 km. The top of the atmosphere outgoing radiance will be sampled every 500 m (at nadir) with measurements made in 20 spectral channels ranging from 443 nm in the visible up to 13.345 μm in the thermal infrared.

The following METimage geophysical products will be generated and validated by EUMETSAT:

Cloud mask

Atmospheric motion vectors.

Cloud top height, microphysics and volcanic ash

Cloud top pressure using the oxygen-A band

Total precipitable water vapour from METimage visible/near-infrared bands.

Total precipitable water vapour from METimage thermal infra-red bands

This paper focuses on the validation activities planned for the METimage geophysical products to ensure they meet user requirements for the lifetime of the mission. The validation of level 2 variables relies on the availability of simultaneous and independent data providing the same information on the same horizontal scale. Validation methods include intercomparisons with other validated missions through simultaneous nadir overpasses (both low Earth orbit and geostationary), comparisons with ground based observations, and short term weather forecasts. The level 2 product performance will be validated with respect to user requirements for all geographic regions and seasonal variation.

Proceedings Article | 25 September 2018 Presentation + Paper

Calibration and validation of Level 1B radiances of the EUMETSAT polar system - second generation (EPS-SG) visible/infrared imager METimage

P. Phillips, R. Bonsignori, D. Just, P. Schlüssel, F. Schmülling, I. Zerfowski

Proceedings Volume 10785, 1078512 (2018) https://doi.org/10.1117/12.2325545

KEYWORDS: Calibration, Diffusers, Satellites, Black bodies, Stray light, Imaging systems, Body temperature, Modulation transfer functions, Sensors, Radiometry

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Proceedings Article | 19 October 2016 Presentation + Paper

Overview of calibration and validation activities for the EUMETSAT polar system: second generation (EPS-SG) visible/infrared imager (METimage)

P. Phillips, R. Bonsignori, P. Schlüssel, F. Schmülling, L. Spezzi, P. Watts, I. Zerfowski

Proceedings Volume 10000, 100000S (2016) https://doi.org/10.1117/12.2240938

KEYWORDS: Calibration, Imaging systems, Satellites, Image resolution, Radiometry, Visible radiation, Infrared radiation, Clouds, Diffusers, Earth's atmosphere

Read Abstract +

The EPS-SG Visible/Infrared Imaging (VII) mission is dedicated to supporting the optical imagery user needs for Numerical Weather Prediction (NWP), Nowcasting (NWC) and climate in the timeframe beyond 2020. The VII mission is fulfilled by the METimage instrument, developed by the German Space Agency (DLR) and funded by the German government and EUMETSAT. Following on from an important list of predecessors such as the Advanced Very High Resolution Radiometer (AVHRR) and the Moderate resolution Imaging Spectro-radiometer (MODIS), METimage will fly in the mid-morning orbit of the Joint Polar System, whilst the early-afternoon orbits are served by the JPSS (U.S. Joint Polar Satellite System) Visible Infrared Imager Radiometer Suite (VIIRS). METimage itself is a cross-purpose medium resolution, multi-spectral optical imager, measuring the optical spectrum of radiation emitted and reflected by the Earth from a low-altitude sun synchronous orbit over a minimum swath width of 2700 km. The top of the atmosphere outgoing radiance will be sampled every 500 m (at nadir) with measurements made in 20 spectral channels ranging from 443 nm in the visible up to 13.345 μm in the thermal infrared. The three major objectives of the EPS-SG METimage calibration and validation activities are: • Verification of the instrument performances through continuous in-flight calibration and characterisation, including monitoring of long term stability. • Provision of validated level 1 and level 2 METimage products. • Revision of product processing facilities, i.e. algorithms and auxiliary data sets, to assure that products conform with user requirements, and then, if possible, exceed user expectations. This paper will describe the overall Calibration and Validation (Cal/Val) logic and the methods adopted to ensure that the METimage data products meet performance specifications for the lifetime of the mission. Such methods include inter-comparisons with other missions through simultaneous nadir overpasses and comparisons with ground based observations, analysis of algorithm internal diagnostics to confirm retrieval performance for geophysical products and vicarious calibration to assist with validation of the instrument on-board calibration. Any identified deficiencies in the products will lead to either an update any auxiliary data sets (e.g. calibration key data) that are used to configure the product processors or to a revision of algorithms themselves. The Cal/Val activities are mostly foreseen during commissioning but will inevitably extend to routine operations in order to take on board seasonal variations and ensure long term stability of the calibrated radiances and geophysical products. Pre-requisite to validation of products at scientific level is that the satellite and instrument itself have been verified against their respective specifications both pre-launch and during the satellite in-orbit verification phase.

Proceedings Article | 16 October 2013 Paper

The EUMETSAT Polar System-Second Generation (EPS-SG) micro-wave and sub-millimetre wave imaging missions

Christophe Accadia, Peter Schlüssel, Pepe Phillips, J. Julian Wilson

Proceedings Volume 8889, 88890H (2013) https://doi.org/10.1117/12.2028676

KEYWORDS: Clouds, Imaging systems, Microwave radiation, Climatology, Polarization, Environmental sensing, Satellites, Antennas, Calibration, Earth's atmosphere

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Proceedings Article | 16 October 2013 Paper

The Multi-Viewing, -Channel, -Polarisation Imager (3MI) of the EUMETSAT Polar System - Second Generation (EPS-SG) dedicated to aerosol characterisation

T. Marbach, P. Phillips, A. Lacan, P. Schlüssel

Proceedings Volume 8889, 88890I (2013) https://doi.org/10.1117/12.2028221

KEYWORDS: Aerosols, Calibration, Clouds, Imaging systems, Polarization, Head, Satellites, Channel projecting optics, Atmospheric particles, Image registration

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Proceedings Article | 3 October 2011 Paper

Observation requirements for the second generation EUMETSAT polar system visible/infrared imager

P. Phillips, P. Schlüssel, C. Accadia, S. Banfi, I. Zerfowski

Proceedings Volume 8176, 817608 (2011) https://doi.org/10.1117/12.897993

KEYWORDS: Clouds, Aerosols, Vegetation, Climatology, Satellites, Ocean optics, Atmospheric modeling, Imaging systems, Meteorology, Temperature metrology

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Proceedings Article | 17 October 2007 Paper

Definition of mission requirements for the follow-on EUMETSAT polar system

P. Phillips, P. Schluessel, C. Accadia, R. Munro, J. Wilson, A. Perez-Albiñana, S. Banfi

Proceedings Volume 6744, 674405 (2007) https://doi.org/10.1117/12.737929

KEYWORDS: Clouds, Climatology, Satellites, Atmospheric chemistry, Environmental sensing, Microwave radiation, Atmospheric monitoring, Imaging systems, Aerosols, Atmospheric modeling

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Proceedings Article | 29 October 2005 Paper

Classification of IASI inhomogeneous scenes using co-located AVHRR data

P. Phillips, P. Schlüssel

Proceedings Volume 5979, 597905 (2005) https://doi.org/10.1117/12.627605

KEYWORDS: Clouds, Statistical analysis, Interferometers, Contamination, Temperature metrology, Radiometry, Scene classification, Point spread functions, Infrared radiation, Satellites

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Proceedings Article | 18 October 2001 Paper

Using interactions between features on a superdirectional sonar to find wrecks

Roderick Smith, Susan Phillips, Paul Beeston, Pepe Phillips

Proceedings Volume 4394, (2001) https://doi.org/10.1117/12.445442

KEYWORDS: Transducers, Feature extraction, Global Positioning System, Embedded systems, Data conversion, Phase shifts, Interfaces, Signal processing, Received signal strength, Human-machine interfaces

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Proceedings Article | 26 August 1997 Paper

Ellipsometry and Raman spectroscopy of MBE-grown undoped Si-Si0.78Ge0.22/(001)Si superlattices

O. Mironov, Pepe Phillips, E. Parker, M. Mironov, V. Gnezdilov, V. Ushakov, Vicktor Eremenko

Proceedings Volume 3182, (1997) https://doi.org/10.1117/12.280430

KEYWORDS: Raman spectroscopy, Superlattices, Ellipsometry, Acoustics, Spectroscopic ellipsometry, Germanium, Molecular beam epitaxy, Interfaces, Phonons

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