The Precise Numerical map production system using DSM, DTM and Reference points

摘要

The present invention relates to a precision digital map system, and more specifically, to a precision digital map system using DSM and DTM information and reference point information, which can obtain precise image images by cleaning the lens of an aircraft camera to improve the clarity of shooting in aerial photography using an aircraft, and can also shoot image images of the ground at the same altitude by finely adjusting the shooting altitude of a camera installed in an aircraft even when fine altitude adjustment of the aircraft is difficult, and can quickly update confirmed GNSS coordinate information on a digital map. More specifically, the present invention cleans a camera lens of an aircraft photographing device to improve the clarity of the photographing, thereby minimizing errors in video and drawing images, and when photographing an aerial photograph, an altitude adjustment device is attached to the photographing device so that it can be extended in multiple vertical stages, thereby easily performing altitude correction, and an altitude measurement controller connected to a pulley of the altitude adjustment device transmits a control signal to the pulley in consideration of the distance a connecting pipe should be extended, thereby automatically enabling altitude correction through the connecting pipe, thereby functioning to enable the production and update of more precise and rapid digital maps.