Patent ID: 6031606
Filing Date: 2000-02-29
Classification: G01C,G01S,G06T

Abstract:
A method for rapidly detecting the position of a cooperative target with the aid of a theodolite having a spatially resolving optoelectronic detector having pixels arranged in the form of a matrix, wherein the cooperative target emits or reflects radiation, comprising:receiving the radiation coming from the cooperative target with an imaging optical system and the detector of the theodolite; andevaluating the detector signals wherein said evaluating includes sending the detector signals to a preprocessing unit,and summing by row and column the radiation intensities detected by the pixels of the detector, such that a row sum function I.sub.z (y) is formed from the sums of the rows and a column sum function I.sub.s (x) is formed from the sums of the columns,wherein two-dimensional image coordinates (x.sub.0, y.sub.0) of the target in the coordinate system x, y of the detector are determined from the determination of the centroid of the row sum function and column sum function.