caa a22 4500 606150498 CHVBK 20210128100539.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10512-015-9972-y doi (NATIONALLICENCE)springer-10.1007/s10512-015-9972-y Reconstruction of Missing Height-Sensor Readings on the Basis of Archival Neutron Field Monitoring Data [Elektronische Daten] [A. Zagrebaev, N. Ovsyannikova, R. Ramazanov, N. Mil'to] Constant monitoring of the state of the core ensures safe operation of a nuclear reactor. This article examines the reconstruction of the energy release in the core of a nuclear reactor on the basis of the indications of height sensors. Situations where some sensors fail are not rare. Any reduction in the number of sensor indications increases the error. However, the missing measurement information can be reconstructed by mathematical methods, and replacement of the failed sensors can be avoided. The simplest algorithm for reconstruction missing indications consists in approximating the height distribution by harmonic functions. However, the coefficients of these functions are found to be correlated. It is suggested that a set of natural functions determined by means of statistical estimates obtained from archival data be constructed. The procedure proposed makes it possible to reconstruct the field even with a significant loss of measurement information. Springer Science+Business Media New York, 2015 Zagrebaev A. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut Ovsyannikova N. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut Ramazanov R. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut Mil'to N. National Research Center Kurchatov Institute, Moscow, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 118/3(2015-07-01), 163-169 1063-4258 118:3<163 2015 118 10512 https://doi.org/10.1007/s10512-015-9972-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10512-015-9972-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zagrebaev A. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut NATIONALLICENCE 700 1- Ovsyannikova N. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut NATIONALLICENCE 700 1- Ramazanov R. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia aut NATIONALLICENCE 700 1- Mil'to N. National Research Center Kurchatov Institute, Moscow, Russia aut NATIONALLICENCE 773 0- Atomic Energy Springer US; http://www.springer-ny.com 118/3(2015-07-01), 163-169 1063-4258 118:3<163 2015 118 10512