title: Additive and subtractive microwave holography.
abstract: Three methods are given for the addition and subtraction of holographic images. These methods are (1) the photographic superposition of two holograms, (2) the interlacing of two holograms, and (3) the spatial averaging of two or more holograms. The three methods are best suited to microwave or acoustic hologrelativelyraphy where the wavelength used is relatively large. icrowave holograms recorded at a wavelength of 8.62 mm were used to illustrate the effectiveness of the techniques. The experimental results obtained by these new methods roved to be satisfactory and these techniques promise to have practical applications.
authors.forename: L G
authors.initials: LG
authors.lastname: Gregoris
authors.forename: K
authors.initials: K
authors.lastname: Lizuka