FIELD: optical location. SUBSTANCE: radiation from an object is received by means of two optical-mechanical ducts moved apart for L distance; the ducts have parallel axes. Two images moved apart spatially are formed simultaneously in registration units which are coincided with receiving planes. Images after being indicated are converted point-by point into two-gradation images by means of threshold processing units. Difference image is achieved by means of subtraction of two-gradation images at subtraction unit. Coordinates of geometric centers of difference image ares are measured which have opposite signs at units for coordinate measurement. Value of parallax shift is measured by means of subtraction of coordinates of geometric centers of difference image areas, as well as spherical coordinates in processor. EFFECT: improved precision. 2 dwg
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