Abstract
The passive planar arrays used to receive sonic waves through the earth or water or those employed in radio astronomy use mechanical or electronic scanning in order to observe a large solid angle, such as 2π sr. The purpose of the present paper is to develop a method for real-time visual display of such wave fields. It is analogous to the use of a wide-angle lens for viewing large solid angles in the visible spectrum. The method is analogous to a recently developed technique of incoherent holography, with the important difference that the sampling performed by an array makes unnecessary any film-processing stage.
© 1966 Optical Society of America
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Mark J. Beran
J. Opt. Soc. Am. 56(11) 1475-1480 (1966)
Gary Cochran
J. Opt. Soc. Am. 56(11) 1513-1517 (1966)
Carl W. Helstrom
J. Opt. Soc. Am. 60(4) 521-530 (1970)