A method for determining, from a plurality of satellites, a position of a mobile object having a reception device configured to receive satellite signals, includes performing a measurement of a plurality of pseudo-distances between the reception device and the plurality of satellites using the satellite signals. The method further includes correcting a result of the measurement using a surroundings model of surroundings of the mobile object to produce at least one corrected pseudo-distance. The surroundings model is indicative of at least one reflection plane of satellite signals.