METHOD FOR DETERMINING PHASE OF EMITTED WAVE FIELD Russian patent published in 2004 - IPC

FIELD: technology for determining phase of wave field.

SUBSTANCE: method includes transforming of value of change of intensiveness of emitted wave field at selected surface, passing wholly transversely to wave field, for creating of first integrally transformed representation. To first integrally transformed representation a first filter is applied, which matches inversion of first differential operator, shown in given criterion for speed of change of intensiveness, for receiving first modified integrally transformed representation. Inversion of first integral transformation is applied to first modified integrally transformed representation for receiving non-transformed representation. Non-transformed representation is corrected on basis of criterion of intensiveness on given selected surface, and again transformed for receiving second integrally transformed representation. To second integrally transformed representation a second filter is applied, which matches inversion of second differential operator, shown in corrected non-transformed representation, for receiving second modified integrally transformed representation. Inversion of second integral transformation is applied to second modified integrally transformed representation for receiving criterion of phase of emitted wave field in selected plane.

EFFECT: non-interfering method and device providing for measurement of phase and intensiveness in any plane of emitted wave field.

2 cl, 13 dwg