1. A method for the acquisition and post-processing of geographical information of a path for corridor mapping, wherein the method comprises: an initial acquisition phase comprising the steps of: a) acquiring geographical data and information by means of a plurality of sensors of a terrestrial vehicle; b) sending trajectory information of the terrestrial vehicle to an aircraft, from a control station hosted on the terrestrial vehicle, every certain period of time, where the time period is a design parameter; c) when the aircraft receives the trajectory information of the terrestrial vehicle, the aircraft determines its trajectory according to the trajectory information of the terrestrial vehicle received, wherein the aircraft follows the same trajectory as the terrestrial vehicle with a temporal and spatial offset, where a time delay and a vector difference between the aircraft and the terrestrial vehicle is a design parameter that can vary with time according to the commands of an operator; d) acquiring, simultaneously to step a), geographical data and information, including images, by means of a plurality of sensors of the aircraft; and, after the acquisition phase, a post-processing phase comprising the steps of: e) inputting, in a post-processing module, the geographical data and information acquired in the previous steps, which comprises images acquired by the aircraft, geographical information previously known, navigation information including time, position, velocity and attitude, coordinates of kinematic control points associated to the center of a roof target of the terrestrial vehicle, image coordinates and scale factor of the kinematic ground control points associated to said roof target of the terrestrial vehicle; f) identifying a same ground element in different images acquired by the image sensor of the aircraft and measuring its image coordinates; g) obtaining, in the post-processing module, the orientation of the sensors of both terrestrial vehicle and aircraft according to the inputs of step e) and step f); h) calibrating, in the post-processing module, the sensors of both terrestrial vehicle and aircraft according to the inputs of step e) and step f); and i) associating every image acquired with the orientation and calibration obtained in steps g) and h) respectively.