validation

(1) the process of assessing, by independent means, the quality of the data products derived from the system outputs
(2) verification, where the specified requirements are adequate for an intended use
(3) confirmation, through the provision of objective evidence, that the requirements for a specific intended use or application have been fulfilled
(4) the process of assessing, by independent means, the degree of correspondence between the value of the radiometric quantity derived from the output signal of a calibrated radiometric device and the actual value of this quantity.
(5) confirmation by examination and provision of objective evidence that specifications conform to user needs and intended uses, and that the particular requirements implemented through software can be consistently fulfilled

References: 

(1) ISO/TS 19159-1:2014(en), Geographic information - Calibration and validation of remote sensing imagery sensors and data — Part 1: Optical sensors

(2) Joint Committee for Guides in Metrology (JCGM/WG 2) 200:2012 & ISO/IEC Guide 99-12:2007, International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM), http://www.bipm.org/en/publications/guides/vim.html

(3) ISO 9000:2015(en), Quality management systems - Fundamentals and vocabulary

(4) Prokhorov, A. V., R. U. Datla, V. P. Zakharenkov, V. Privalsky, T. W. Humpherys, and V. I. Sapritsky, Spaceborne Optoelectronic Sensors and their Radiometric Calibration. Terms and Definitions. Part 1. Calibration Techniques, Ed. by A. C. Parr and L. K. Issaev, NIST Technical Note NISTIR 7203, March 2005

(5) Center for Devices and Radiological Health (CDRH), General Principles of Software Validation; Final Guidance for Industry and FDA Staff, CBER CDRH/OC Doc. N. 938, January 11, 2002. Publicly available via http://www.fda.gov/RegulatoryInformation/Guidances/ucm085281.htm

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