METHOD OF DIFFERENTIAL NAVIGATION Russian patent published in 2000 - IPC

FIELD: reception and processing of radio navigation signals of satellite system and of correcting information from testing and correction station. SUBSTANCE: correcting information is simultaneously received at navigation object from four testing and correction stations in which time scales are timed. Radio navigation signals are received and processed from those artificial navigation earth satellites of navigation satellite system which are within visibility zone of navigation object and for which correcting information is obtained from four testing and correction stations. Then corrections to coordinates ΔX_B, Y_B, ΔZ_B and time scale ΔΨ_B of each artificial navigation earth satellite are computed by solution of system of linear equations with due account of corrections to pseudorange to artificial navigation earth satellite received at navigation object from i-th testing and correction station, of partial derivatives from pseudorange measured from i-th testing and correction station by coordinates and deviation of time scale and own coordinates of navigation object are computed on basis of received ephemeral information and measurement of pseudoranges using computed corrections to coordinates and time scale of artificial navigation earth satellites. EFFECT: increased precision of location of position of differential subsystem of radio navigation satellite system with significant distance between user and testing and correction stations. 3 dwg