A WAVE FRONT RECONSTRUCTION PROCESS FOR A DISPLAY OF THE MULTIPLE BEAMS OF SEISMIC AND OTHER ARRAYS.
INSTITUTE FOR DEFENSE ANALYSES ARLINGTON VA RESEARCH AND ENGINEERING SUPPORT DIV
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The passive planar arrays used in receiving sonic waves through the earth or water, or those used in radio astronomy use mechanical or electronic scanning in order to observe a large solid angle such as 2pi steradians. The purpose of the present paper is to develop a method for obtaining a 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 uses a recently developed technique of incoherent holography as an analog, with the important difference that the sampling aspect of an array enables one to obviate any film processing stage. An appendix treats a few problems for seismic arrays. Author
- Optical Detection and Detectors