Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Use of measurements of a geophysical field in the problems of correlation extremal navigation А.N. MIKRYUKOV Various approaches of use of a geophysical field in correlation extremal navigationing systems with a view of increase of reliability of functioning of algorithms of definition of navigating parametres LA are described and investigated. Key words: сorrelation extremal navigationing systems, filter Kalman, navigating parameters.