Method for continuous determination of the distance between a mobile airborne receiver of known fashion on a known trajectory and a stationary ground transmitter, said transmitter being observed by said receiver following a line of sight (LVi) of variable direction upon movement of said transmitter, characterised in that it implements the following operations: a') by the implementation of a digital terrain model which is representative of the terrain on which said stationary transmitter is found and which indicates the maximum elevation (Hmax) and the minimum elevation (Hmin) of this terrain, a maximum distance value (dimax) and a minimum distance value (dimin) are determined, for each of a plurality of successive positions of said airborne receiver for the entirety of its trajectory, defining a range of distance values in which the real value of the distance between said receiver and said transmitter in the corresponding position of said airborne receiver is found; b') at each of said successive positions of said airborne receiver, the value of the azimuth angle (azDi) and the value of the elevation angle (hDi) of the corresponding direction of said line of sight (LVi) is measured; c') for each of a plurality of points (pj) of the part (mnt) of said digital terrain model included in each of said ranges of distance values obtained in step a'), the theoretical distance between said point and said receiver is calculated, as well as the values of the theoretical azimuth angle and the theoretical elevation angle of the direction of said theoretical distance; d') the results of the measured values of the azimuth angle and the elevation angle, obtained in step b'), are respectively compared to the results of the theoretical values of the azimuth angle and the theoretical elevation angle obtained in step c'); and e') it is considered that the progression of the real distance between the receiver and the transmitter, while said receiver moves along its trajectory, is represented by the progression of the theoretical distance calculated in step c'), for which the results of the values of the theoretical azimuth angle and the theoretical elevation angle are respectively the closest of the results of the measured azimuth angle and the elevation angle of said line of sight. a') by the implementation of a digital terrain model which is representative of the terrain on which said stationary transmitter is found and which indicates the maximum elevation (Hmax) and the minimum elevation (Hmin) of this terrain, a maximum distance value (dimax) and a minimum distance value (dimin) are determined, for each of a plurality of successive positions of said airborne receiver for the entirety of its trajectory, defining a range of distance values in which the real value of the distance between said receiver and said transmitter in the corresponding position of said airborne receiver is found; b') at each of said successive positions of said airborne receiver, the value of the azimuth angle (azDi) and the value of the elevation angle (hDi) of the corresponding direction of said line of sight (LVi) is measured; c') for each of a plurality of points (pj) of the part (mnt) of said digital terrain model included in each of said ranges of distance values obtained in step a'), the theoretical distance between said point and said receiver is calculated, as well as the values of the theoretical azimuth angle and the theoretical elevation angle of the direction of said theoretical distance; d') the results of the measured values of the azimuth angle and the elevation angle, obtained in step b'), are respectively compared to the results of the theoretical values of the azimuth angle and the theoretical elevation angle obtained in step c'); and e') it is considered that the progression of the real distance between the receiver and the transmitter, while said receiver moves along its trajectory, is represented by the progression of the theoretical distance calculated in step c'), for which the results of the values of the theoretical azimuth angle and the theoretical elevation angle are respectively the closest of the results of the measured azimuth angle and the elevation angle of said line of sight.