FIELD: radio engineering. SUBSTANCE: proposed procedure extracting errors in satellite radio navigation system is based on reception of navigation signals from satellites at ground measurement centers, one of which being reference center. Pseudo-range and pseudo-speed are measured at measurement centers. Results of measurement are transmitted from each measurement center to processing center which determines scalar errors with the aid of following expressions: Rmeaij= DDij+CΔtHunj+ΔDDcni, 
and obtained scalar errors are averaged over specified interval. Obtained vector-scalar errors do not depend on positions of reference measurement centers. EFFECT: increased precision of radio navigation system determining positions. 1 dwg
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