WHO ARE WE?
GMV (www.gmv.com) is a privately owned technological enterprise group with an international presence employing more than 1.100 staff. Founded in 1984, GMV mainly operates in eight large sectors for both public and private organizations: Aeronautics, Space, Defense, Health, Security, Transportation, Telecommunications and Information Technologies.
GMV currently runs eight work centers in Spain: Tres Cantos (Madrid - headquarters), Boecillo (Valladolid), Seville, Barcelona, Valencia, Tenerife, León, Zaragoza and also work centers in Lisbon (Portugal), Rockville (Maryland, USA), Darmstadt (Germany), Warsaw (Poland), Bucharest (Romania), Malaysia, Toulouse (France) and New Delhi (India).
We recruit and hire excellent engineers, and encourage innovation, technical excellence and continuing education. Our engineers regularly present papers at technical conferences, continue their education (more than 85% have a master’s degree), and we re-invest more than 12% of budget in IR&D projects. This striving for excellence, innovation and flexibility is a major part of our culture. We provide very competitive compensation, attractive benefits, and a great work environment with lots of opportunities for professional growth.
Responsibilities/ Duties /Tasks
The focus of this Sentinel-3 Optical Sensor Calibration Expert Consultancy is to support the calibration of the Ocean and Land Colour Imager (OLCI) and Sea and Land Surface Temperature Radiometer (SLSTR} instruments on the Sentinel-3 mission, which
EUMETSAT operates on behalf of the European Commission. Hence, the focus will be to provide an in-depth understanding of the instruments' calibration and characterisation inorbit.
The calibration data and instrument performance will be analysed using existing tools and by developing in-house tools for instrument calibration as well as vicarious and intercalibration to adjust and monitor the operational calibration systems.
The Key person shall support the Calibration Team of INRC competence area, in close collaboration with the Ocean Colour and Surface Temperature Radiometry teams in the Marine Applications competence area, whose activities the consultant shall primarily support.
The workplace will be EUMETSAT.
The tasks of the Key person will typically include:
• scientific analysis of the radiometric and spectral calibration of Ll data from OLCI and SLSTR,
• analysing results of pre-launch and in-orbit calibration systems and characterisation data , including:
o solar diffusers, straylight, nonlinearity, SNR, polarisation sensitivity,
o spacecraft manoeuvres performed during or after commissioning,
• developing in-depth knowledge of the instruments' operational processing chain,
• applying the calibration monitoring tools to OLCI and SLSTR, which will include a combination of:
o pseudo-invariant calibration sites,
o Rayleigh scattering over the sea,
o lunar calibration,
o deep convective clouds,
o inter-calibration against collocated hyperspectral sounder observations,
• developing specific components of the calibration monitoring tools to handle Sentinel-3 data,
• analysing results of these tools to provide information on these sensors' performance,
• performing comparisons with other instruments, such as A VHRR, VIIRS, MODIS to gain understanding of the performance ofOLCI and SLSTR,
• using GEOCAL tool developed by ESA to monitor geometric performance,
• providing recommendations to implement changes to the operational procedures and processing chains to improve the instruments' calibration,
• working with the team responsible for generating L2 products for these instruments to assess and improve the instruments' calibration,
• writing and reviewing documentation describing the instruments' calibration and aspects oftheir Ll processing.
A university degree or equivalent in Physics, Remote Sensing, Instrument engineering, or similar
• At least 3 years experience in the processing of satellite data to generate calibrated Ll datasets in the visible, near- and/or thermal infrared.
• At least 3-5 years experience in L 1 calibration/validation.
• Recognised expertise in the calibration of optical sensors- both pre-launch and on orbit.
• The Consultant shall be able to demonstrate a good working knowledge of statistical techniques and understanding of the concepts of calibration and traceability.
• The Consultant shall have a good knowledge of radiative transfer in the solar and/or infrared spectral ranges and experience in applying them for surface and/or atmospheric applications.
• Proven experience in the use of data analysis tools, such as Matlab/IDL, scripting languages, such as Perl/Python and high-level programming, such as C/C++/FORTRAN on a Linux/Unix environment, and an aptitude to learn further programming languages as required.
• Experience in the implementation of calibration algorithms.
• Very good communication skills - both verbal and written are an important aspect of this role- both between teams within EUMETSA T and with Industry and ESA
WHAT DO WE OFFER?
As soon as they join the organization our professionals are given the chance to tackle technological challenges in an innovative environment, to work in multi-disciplinary teams and deal directly with clients. This helps them to mature quickly as professionals.
We provide continual top-up training to keep our career professionals perfectly abreast of all technologies used.
We offer a permanent contract and attractive package including a highly competitive salary plus a comprehensive benefits package.
If you would like to work in an interesting, fun, fast-paced, challenging, diverse and global company which is growing rapidly, please send us your resume to firstname.lastname@example.org
For more information about GMV, please visit our website at www.gmv.com