The present invention is directed to a system and method for taking up an object
space using a laser range finder and a scanning device for scanning the object
space. Furthermore, there is a passive opto-electronic receiver having an associated
scanning device. The scanning device(s) scans the object space for the range finder
and the passive receiver synchronously and in phase. To each image element, a spatial
angle is assigned for identification. The passive receiver, comprises an array
of transducer, elements where the image angle of an individual element of the array
corresponds preferably to the beam angle of the laser beam. A memory includes one
cell per image element so that with each distance measurement the individual elements
of the array can be read and their signals stored in the cells of the memory. With
each distance measurement the assignment of the elements of the array to the cells
of the memory is shifted by one so that the cell which had received the signals
of a certain image element receives them anew and the signals received from different
spatial angles add up in the cells during subsequent measurements.