METHOD FOR DETERMINATION OF DIFFERENTIAL CORRECTIONS Russian patent published in 1994 - IPC

FIELD: radio navigation. SUBSTANCE: method involves receiving signals from radio navigation satellites at ground-based correction stations having known coordinates, measuring distances to each satellite, detection of ephemeris information from received signals, calculation of distances according to ephemeris values and coordinates of correction stations, calculation of corrections as average difference between measured and calculated values of distances and speed of change of corrections, transmission of information about corrections and speed of their change to object which seeks its place. Central station process signals with correction data received from peripheral stations to achieve increased zone of operation of navigation system. EFFECT: increased functional capabilities. 6 dwg