Geographic data collecting system

A portable geographic data collecting system, comprising a GPS unit for measuring a coordinate position, a distance measuring unit for projecting a distance measuring light and for measuring a distance to an object to be measured, a camera for taking an image in measuring direction, a display unit for displaying the pickup image, an azimuth sensor for measuring the azimuth of said measuring direction an arithmetic unit for calculating a coordinate position of the measuring point based on:

• (a) a first image including said measuring point acquired at a first geographic point by said camera, and
• (b) a second image including said measuring point acquired at a second geographic point by said camera,
• and a portable housing for accommodating said GPS unit, said distance measuring unit, said camera, said display unit, said azimuth sensor and said arithmetic unit, wherein said arithmetic unit calculates said coordinate position of said measuring point by image matching said first image and said second image by using said measuring point, and from the coordinate position of the first geographic point and the second geographic point measured by said GPS unit, and based on a distance and azimuth from the first geographic point to the measuring point measured by said distance measuring unit and on a distance and azimuth from the second geographic point to the measuring point.