Laser speckle data collection experiments

Details Laser speckle data collection experiments Laser speckle data collection experiments

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1351..616h&link_type=abstract

IN: Digital image synthesis and inverse optics; Proceedings of the Meeting, San Diego, CA, July 9-13, 1990 (A92-18776 05-74). Be

Physics

Optics

Data Acquisition, Image Reconstruction, Optical Correction Procedure, Speckle Patterns, Synthetic Apertures, Angular Resolution, Classifying, Focal Plane Devices, Image Resolution, Laser Range Finders, Telescopes

Scientific paper

Three experiments demonstrate the validity of a concept for a multiple-aperture imager by reconstructing images from laser-speckle intensities. A CCD-detector array is used to measure the laser-speckle intensities in spite of the limitations inherent in the high-frequency content of the CCD measurements. The optical bench imaging demonstration shows that the array MTF filter degrades the high-frequency portion of the measured speckle patterns. Two horizontal range experiments are undertaken, and one suffers from MTF degradation in addition to atmospheric turbulence and background light. Subaperture detector elements are tested in an experiment at reduced scale to minimize turbulence. The coboresighting of the subaperture elements can be addressed in this type of discrimination experiment.

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