STOCHASTIC FILTER Russian patent published in 1997 - IPC

FIELD: computer engineering, in particular, instruments for optimal minimal estimation of periodic processes. SUBSTANCE: device has laser light source, input optical splitter, which has two groups of optical branches each of which has M branches. In addition device has six units which calculates trigonometric functions, six adders, four subtraction units, three groups of multipliers, two integrators, controlled light source, optical splitter which has group s of optical branches each of which has M branches. In addition device has optical function generators each of which has optical transparency units, two groups of optical branches, controlled phase modulators, optical adder and constant subtraction unit. Each trigonometric function calculation unit has light modulators, two groups of optical branches, autonomous phase modulators, light deflectors, optical adder, photodetector, two multipliers and six adders. EFFECT: increased functional capabilities. 1 dwg