Theory and technology of Space Metrology

Abstract

Space Metrology is the measurement science conducting technical and management activities to realize the uniformity of measurement units and to ensure the reliability and accuracy of measurement value in extraterrestrial space. Research in Space Metrology aims to meet to needs of on-site calibration for long-life spacecraft and extraterrestrial base such as the Mars base or the lunar base. Integrating Theory of General Relativity into Metrology, research on the theory of metrology in 4-dimensional spacetime is proposed here. This paper provides an overview of the effect of Relativity on definition of SI units and ongoing technical researches in the engineering field.