The paper presents the results of post flight data processing and analysis for on-board magnitometers DIMAC installed in Foton-M3 spacecraft.Measurements were performed during thewhole flight and cover 11 days time span. Data processing was performed based on integral statistical methodize: data obtained during several orbitings of Earth were processed jointly using the least squares method and integration of spacecraft motion relative to the center of mass. Based on the results of spacecraft motion microaccelerations were calculated in different places of the capsule, where stayed scientific equipment for microgravity research. Results of spacecraft relative motion based on magnetic measurements happened to be in a very good agreement with the data of angular velocity measurements provided by on board guidance and control systems.
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