Multiplex holographic filtering through contact screens
Abstract
The basic principle of applying a specific contact screen for performing multiplex holographic filtering in a real-time coherent optical correlator is described. The specific design and fabrication of a one-dimensional and a two-dimensional gray density contact screen are described. The two-dimensional screen can yield nearly a 5 x 5 array of spectra islands in a coherent image processor.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1982
- Bibcode:
- 1982STIN...8311479D
- Keywords:
-
- Holography;
- Image Correlators;
- Matched Filters;
- Multiplexing;
- Optical Equipment;
- Autocorrelation;
- Fourier Transformation;
- Missile Control;
- Optical Data Storage Materials;
- Pattern Recognition;
- Photographic Recording;
- Instrumentation and Photography