Mr. Roberto Bonsignori Profile

Roberto Bonsignori

Sr Instrument Engineer at EUMETSAT

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Author

Publications (14)

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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SPIE Journal Paper | 26 May 2018

In-orbit verification of microwave humidity sounder spectral channels coregistration using the moon

Roberto Bonsignori

JARS, Vol. 12, Issue 02, 025013, (May 2018) https://doi.org/10.1117/12.10.1117/1.JRS.12.025013

KEYWORDS: Microwave radiation, Humidity, Satellites, Calibration, Aerospace engineering, Antennas, Radiometry, Absorption, Satellite communications, Infrared radiation

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Proceedings Article | 5 September 2017 Presentation + Paper

In-orbit verification of MHS spectral channels co-registration using the moon

Roberto Bonsignori

Proceedings Volume 10402, 104022C (2017) https://doi.org/10.1117/12.2273335

KEYWORDS: Microwave radiation, Radiometry, Humidity, Calibration, Satellites, Earth's atmosphere, Infrared radiation, Aerospace engineering, Space operations, Data analysis

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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

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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 | 13 October 2010 Paper

METimage: a multispectral imaging radiometer for the EUMETSAT Polar System follow-on satellite mission

F. Schmülling, I. Zerfowski, A. Pillukat, R. Bonsignori

Proceedings Volume 7826, 78260P (2010) https://doi.org/10.1117/12.869272

KEYWORDS: Telescopes, Sensors, Space telescopes, Clouds, Imaging systems, Calibration, Satellites, Radiometry, Satellite imaging, Scanners

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Proceedings Article | 17 October 2007 Paper

The Microwave Humidity Sounder (MHS): in-orbit performance assessment

Roberto Bonsignori

Proceedings Volume 6744, 67440A (2007) https://doi.org/10.1117/12.737986

KEYWORDS: Satellites, Microwave radiation, Space operations, Data acquisition, Calibration, Humidity, Aerospace engineering, Radiometry, Environmental sensing, Atmospheric modeling

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Proceedings Article | 8 April 2003 Paper

Requirements and design of a thermal high-resolution Earth mapper (THEMA) based on uncooled detectors

Peter Coppo, Enrico Battistelli, Marco Barilli, Giuseppe Basile, Roberto Bonsignori, Annalisa Capanni, Leandro Chiarantini, Claudio Giunti, Stefano Pieraccini, Andrea Romoli, Matteo Taccola, Umberto Del Bello

Proceedings Volume 4881, (2003) https://doi.org/10.1117/12.462609

KEYWORDS: Sensors, Temperature metrology, Spatial resolution, Thermography, Microbolometers, Photovoltaics, Mercury cadmium telluride, Satellites, Environmental sensing, Climatology

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Proceedings Article | 30 January 2002 Paper

Feasibility of the spaceborne radiation explorer in the far infrared (REFIR)

Rolando Rizzi, Luca Palchetti, Bruno Carli, Roberto Bonsignori, John Harries, Jean Leotin, S. Peskett, Carmine Serio, Alfonso Sutera

Proceedings Volume 4485, (2002) https://doi.org/10.1117/12.454252

KEYWORDS: Signal to noise ratio, Fourier transforms, Sensors, Imaging systems, Interferometers, Calibration, Mirrors, Far infrared, Clouds, Spectroscopy

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Proceedings Article | 12 December 2001 Paper

Aliasing effects on images acquired by hyperspectral pushbroom sensors

Alessandro Barducci, Stefano Baronti, Roberto Bonsignori, Annalisa Capanni, Umberto Del Bello, Paolo Marcoionni, Ivan Pippi, Andrea Romoli, Leonardo Santurri, Raffaele Vitulli

Proceedings Volume 4540, (2001) https://doi.org/10.1117/12.450655

KEYWORDS: Sensors, Modulation transfer functions, Image filtering, Prisms, Image processing, Spatial resolution, Image resolution, Fuzzy logic, Image sensors, Visualization

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Proceedings Article | 9 February 2001 Paper

Visible imaging spectrometer and infrared radiometer (VISIR) for coastal zones and land applications

Umberto Del Bello, Roberto Bonsignori, Andrea Romoli, Peter Coppo

Proceedings Volume 4169, (2001) https://doi.org/10.1117/12.417140

KEYWORDS: Spectroscopy, Short wave infrared radiation, Sensors, Ocean optics, Visible radiation, Thermography, Infrared radiation, Calibration, Polarization, Radio optics

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Proceedings Article | 9 February 2001 Paper

Instruments and system for CLOUDS: a cloud and radiation monitoring satellite

Bizzarro Bizzarri, Paolo Spera, Emanuele Maggi, Peter Coppo, Roberto Bonsignori, Peter Zimmermann, Thomas Rose, Norman Grant, Laurent Vial

Proceedings Volume 4169, (2001) https://doi.org/10.1117/12.417133

KEYWORDS: Clouds, Radiometry, Sensors, Satellites, Calibration, Polarization, Climatology, Data storage, Medium wave, Ultraviolet radiation

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Proceedings Article | 28 December 1999 Paper

Regional-scale optical remote sensing by the SkyMed/Cosmo system

Alessandro Barducci, Roberto Bonsignori, Peter Coppo, Ivan Pippi

Proceedings Volume 3870, (1999) https://doi.org/10.1117/12.373171

KEYWORDS: Sensors, Ocean optics, Remote sensing, Satellites, Spectral resolution, Spatial resolution, Environmental monitoring, Oceanography, Water, Thermography

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Proceedings Article | 13 September 1994 Paper

High-precision mirror drive for far-infrared high-resolution Fourier spectrometer

Alessandra Barbis, Roberto Bonsignori, Mauro Brotini, Vittorio Spicci, Bruno Carli

Proceedings Volume 2209, (1994) https://doi.org/10.1117/12.185286

KEYWORDS: Mirrors, Tolerancing, Fourier transforms, Optical alignment, Beam splitters, Interferometers, Error analysis, Optical testing, Statistical analysis, Fermium

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Proceedings Article | 1 July 1991 Paper

Sensor system for comet approach and landing

Roberto Bonsignori, Luca Maresi

Proceedings Volume 1478, (1991) https://doi.org/10.1117/12.45624

KEYWORDS: Comets, Sensors, Navigation systems, Stars, Space operations, Cameras, Data processing, Laser range finders, Control systems, Optical tracking

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Showing 5 of 14 publications

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