METHOD FOR DETERMINATION OF ANGULAR COORDINATE OF SOURCE OF OPTICAL RADIATION

摘要

A method for determination of angular coordinates of an optical source of radiation consists in: radiation from the source is focused into a light spot on a position-sensitive matrix. The light sport on the matrix is formed with diameter that bigger then one matrix element. It is predetermined dependence of ratio of maximal signal correspondently from rows and columns to major signal correspondently from adjacent rows and columns of certain row or column with maximal value of coordinates of a light sport energetic centre on matrix light-sensitive elements. Accordingly to this dependence, a rule for reverse conversion of the said dependences to coordinates of the light spot energetic center on matrix light-sensitive elements is determined. It is formed signals that are equal to sum of signals of elements located in odd rows and odd columns. Maximal signal of rows and maximal signal of columns are compared, according to results of comparison it is determined, whether the light sport energetic centre is located on a column element or a row element. Ratio of maximal of signals correspondently from rows or columns to the major signal correspondently from adjacent rows and columns of certain row or column with maximal value is determined and accordingly to this ratio following the preset rule of conversion of correspondent ratios into coordinates of position of the light sport energetic centre it is determined coordinates of light sport energetic centre in the limits of certain light-sensitive element.