Navigation Links
A roadmap for calibration and validation
Date:10/22/2007

The volume of data acquired by more than 50 Earth Observation satellites is increasing at an exponential rate and is providing unprecedented synoptic views of our planet. Because these satellites often use different methodologies, using data for trend analysis and environmental monitoring can be difficult, making it essential to establish globally recognised guidelines for Calibration and Validation processes.

More than 50 experts from space agencies and organisations around the world met earlier this month at the GEO/CEOS Workshop on Calibration and Validation Processes in Geneva, Switzerland, to identify and scope key elements needed to develop and implement a data quality strategy.

Calibration is the process of quantitatively defining the system responses to known, controlled signal inputs. Validation is the process of assessing, by independent means, the quality of the data products derived from the system outputs.

The workshop, hosted by the Group on Earth Observations (GEO) and ESA from 2 to 4 October, was structured around four main sessions:

  • Cal/Val site characterisation & classification

  • Satellite and in situ Cal/Val data access

  • Methodology and guidelines for Cal/Val

  • Harmonisation of quality information

At the beginning of each session, the chair presented a summary of the relevant key issues and then opened the floor for discussion.

The dialogue and recommendations will be used to achieve the ultimate goal of the Global Earth Observation System of Systems (GEOSS) for data inter-operability and inter-comparison. Prof. Jose Achache, Director, GEO Secretariat, stressed that in order for GEOSS to be fully successful, there must be calibration, validation and intercalibration between all instruments.

The Committee on Earth Observation Satellites (CEOS), the space contribution to GEOSS, identified the need to take a more active role in tackling these issues. The CEOS Working Group on Calibration and Validation (WGCV) established consensus within the international community that calibration, validation and quality assurance processes should be incorporated into satellite programmes in a harmonised way.

Through the session discussions, the workshop participants reached a consensus on a roadmap towards the establishment of Cal/Val best practices. These best practices will be issued as CEOS endorsed guidelines under the auspices of GEO for implementation by the agencies and will allow data to have an ascribed quality associated with it. The guidelines will cover all aspects of the data quality from instrument characterisation to engineering calibration and geophysical validation.

Participants identified the need for a Cal/Val specific data policy and the allocation of the necessary resources through coordinated efforts of GEOSS members to allow the efficient implementation of these guidelines. Sufficient resources will be required to ensure the continued end-to-end operation and maintenance of a fully traceable Cal/Val system.

The first step towards harmonisation across the global Earth Observation Cal/Val community is the development of a dedicated CEOS WGCV Cal/Val portal, which will facilitate the implementation of these activities on behalf of GEOSS.


'/>"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
Source:Eurekalert

Related biology news :

1. DOE publishes research roadmap for developing cleaner fuels
2. Genetic roadmap charts links between drugs and human disease
3. UCSD researchers create roadmap to integrin activation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... , April 5, 2017  The Allen Institute ... Allen Cell Explorer: a one-of-a-kind portal and dynamic digital ... 3D imaging data, the first application of deep learning ... human stem cell lines and a growing suite of ... platform for these and future publicly available resources created ...
(Date:3/30/2017)... ANGELES , March 30, 2017  On April ... Hack the Genome hackathon at Microsoft,s ... exciting two-day competition will focus on developing health and ... Hack the Genome is the ... been tremendous. The world,s largest companies in the genomics, ...
(Date:3/27/2017)... CENTRE, N.Y. , March 27, 2017 /PRNewswire-USNewswire/ ... Healthcare Information and Management Systems Society (HIMSS) Analytics ... Outpatient EMR Adoption Model sm . In addition, ... 12% of U.S. hospitals using an electronic medical ... CHS for its high level of EMR usage ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... ... , ... Frederick Innovative Technology Center, Inc. (FITCI), a business ... start-ups, is hosting “Celebration Friday” (a festive gathering highlighting client success stories) and ... networking at 3:30 p.m. at FITCI’s 4539 Metropolitan Court location, off English Muffin ...
(Date:4/20/2017)... ... April 20, 2017 , ... As part of ... explore challenging patient cases when screening for direct oral anticoagulant. When patients taking ... need for bridging parental anticoagulation especially for those at high risk of thrombosis ...
(Date:4/20/2017)...  Eli Lilly and Company (NYSE: LLY ... the prevention of migraine at the American Academy of ... 22-28, 2017, in Boston . ... including safety and patient outcomes data for galcanezumab in ... in monthly migraine headache days among patients with episodic ...
(Date:4/20/2017)... ... April 20, 2017 , ... Husson University ... research community’s growing body of knowledge during its Eighth Annual Research and ... the adjacent Darling Atrium. During the event, undergraduates, graduate students, and faculty members ...
Breaking Biology Technology: