FIELD: physics.
SUBSTANCE: method is based on receiving signals from global navigation satellite system spacecraft and involves measurement of phase shift between signals of the aircraft antenna from each satellite navigation system (SNS) spacecraft. After flight, through absolute positioning from phase measurements due to use of exact ephemeredes and exact satellite time determined by the International GPS service through the Internet system, the position of a satellite is calculated from keplerian orbit elements, which are contained in the ephemeride data, and the algorithm for determining coordinates of the aircraft is executed in form of a sequence of calculations, which include calculation of the ionospheric delay using the Klobuchar model and troposphere delay using the Black model, calculating the integer solution from code sequences of the receiver of the satellite navigation system, using the least-squares method to calculate coordinates of the aircraft from phase measurements of the receiver of the satellite navigation system with allowance for phase ambiguity, using an algorithm with a floating solution, the obtained Cartesian ordinates of the aircraft are converted to a geodetic coordinate system.
EFFECT: more accurate measurement of trajectory parametres of aircraft.
2 cl, 4 dwg, 1 tbl
