MOBILE SYSTEM AND PROCESS FOR MAPPING OBJECTS LOCATED AT A LARGE DISTANCE FROM ROADS

摘要

The present invention relates to a mobile system and to a process for mapping objects located at a large distance from roads, and which are directly inaccessible. The claimed system comprises a laboratory vehicle (V.L.) whose position angles and geographical coordinates are real-time determined by means of a GPS receiver sustained by an inertial navigation system (INS) and an Internet connection to a national network of base stations furnishing differential corrections of RTK type (Real Time Kinematic), in conditions wherein an antenna (Ant. GPS) of the GPS receiver is placed in the vicinity of a video camera (C.V) on a mounting platform arranged on a hood of the laboratory vehicle (V.L), the video camera (C.V) having the objective oriented towards the lateral side of the vehicle (V.L.) under a precisely determined fixed angle. The claimed process provides the carrying out of a succession of determinations and an automatic data acquisition and also the implementation of a calculus algorithm by means of which there are carried out: the determination of the value of absolute position angles (Ψ,Θ,Φ) of a target (T) aimed in relation to a point wherein there is located the video camera (C.V.) at the moment wherein the respective image was acquired and the determination of geographical coordinates of the target (T) in latitude and longitude, by applying some triangulation processes on the values of position angles and azimuth, respectively, (Ψ) and (Ψ) of the target T, said angles being determined in relation to North direction (N) of the local magnetic meridian and which corresponds to two different positions (Poz.1 and Poz.2) of the laboratory vehicle (V.L.), positions located at a distance (B.M.) which constitutes the measuring base.