HOLOGRAM OBSERVATION METHOD FOR THREE-DIMENSIONAL WAVE SOURCE DISTRIBUTION, AND STEREOSCOPIC DIRECTIVITY ESTIMATION METHOD OF ANTENNA AND WAVE DISTRIBUTION OBSERVATION METHOD BASED ON HOLOGRAM OBSERVATION

摘要

A hologram observation method for estimating a three-dimensional wave source distribution by a hologram observation, comprising the steps of: a first step for performing a hologram observation at different frequencies not less than one and for performing a reconstruction of an image for a hologram at each frequency; a second step for selecting a wave source as an area to be extracted among a wave source image in the reconstructed image; a third step for obtaining three-dimensional coordinates of the selected wave source in said area; a fourth step for synthesizing an observed wave assuming that a virtual unit wave source exists in the three-dimensional coordinates obtained in said third step and for reconstructing a hologram image from a synthesizing resu and a fifth step for obtaining a true wave source intensity from a ratio of an intensity in the image reconstructed in said fourth step to an actual intensity of the wave source selected in said second step.