GLOBAL POSITIONING MAP SYSTEM BEING THE COORDINATING SYNTHESIZE TYPE

摘要

PURPOSE: A digital map production system combining global positioning system (GPS) coordinates in accordance with the setting of a topographic reference point is provided to produce a precise digital map by constantly maintaining the secure, fixed condition of an information generating part. CONSTITUTION: A cylindrical fixing unit (281) is detachably fixed with a fixing screw. A horizontal plate (282) is combined with the cylindrical fixing unit through a connection part (282a). A fixing body includes multiple cone-shaped protrusions (283a) on the bottom surface touching the ground. A pair of horizontal leveling plates (284) is fixed to the fixing body and includes a guide hole. A level (288) is prepared on the upper surface of the horizontal plate and indicates the horizontal state of the horizontal plate. A body fixing part is composed of a cylindrical connecting unit, an insertion pipe, and a cylindrical supporting unit (285d).