Current activity of Russia in measurement assurance of Earth optical observations

Abstract

The All-Russian Research Institute for Optical and Physical Measurements is currently carrying out a project on developing an integrated system for measurement assurance of Earth observations. The system should provide ground calibration of instruments and their control during space-borne observations. Such tasks require appropriate measurement facilities as well as regulatory documentation. In this paper we discuss the newly created radiometric facility, traceable to SI standard, for precise calibration of instruments for Earth observations, the project on precise monitoring of the stability of the instrument's in-flight performance and the development of national regulatory documentation in harmony with the international document ‘Quality Assurance Framework for Earth Observation—QA4EO’.

Comparison of spectral radiance responsivity calibration techniques used for backscatter ultraviolet satellite instruments

“…A comprehensive evaluation of the uncertainties related to an integrating sphere's spectral radiance calibration has been performed by Taubert et al [8] and Sapritsky et al [9]. Using the spectral radiance comparator facility (SPCF) at Physikalisch-Technische Bundesanstalt (PTB), Taubert demonstrates sphere spectral radiance calibration expanded relative standard uncertainties of approximately 5% at 250 nm and 2.5% at 300 nm (k = 2).…”

Improving Geometric Performance for Imagery Captured by Non-Cartographic Optical Satellite: A Case Study of GF-1 WFV Imagery

“…The United States has developed an EOS plan [5], Earth Science Business Plan (ESE), and Integrated Earth Observation System (IEOS) [6], and it has launched numerous satellites including Landsat, Terra, Earth Observing-1 (EO-1), and other satellites [7]. Other countries such as Russia [8], Japan [9], Canada [10] and India [11] have also put forward corresponding Earth observation plans. Simultaneously, various commercial satellite companies have launched installation error and interior orientation element error and compensate for these errors together with the orbit and attitude errors in the same image, which will inevitably cause many unnecessary calculations because compensation parameters for any image are different and, thus, control data are required separately for each image.…”