Results 151 to 160 of about 7,437 (194)
Some of the next articles are maybe not open access.
Interferometric multi-look techniques for SAR data
IEEE International Geoscience and Remote Sensing Symposium, 2003This paper addresses the benefits of the spectral domain multi-look approach for SAR interferometry. A comparison with the wide spread spatial averaging filter is included in the beginning. Next, it is shown that the flexibility of the spectral domain multi-look technique can be used for improved motion compensation and further for precisely updated ...
Scheiber, R., Bothale, V.M.
openaire +2 more sources
An interferometric technique to study capillary waves
Advances in Colloid and Interface Science, 2017We describe a new interferometric technique to study gas-liquid and liquid-liquid interfaces. Bubbles and drops are subjected to an alternating electric field which excites capillary oscillations at the interface, if charged. Bubble or drop deformation is detected by the change of the internal optical path of a laser beam crossing perpendicular to the ...
Cantu', Laura +2 more
openaire +4 more sources
The interferometric strain rosette technique
Experimental Mechanics, 1996An interferometric strain rosette can be used to measure three in-plane strains. The strain rosette consists of three microindentations produced on an object surface. Upon illuminating the indentations with laser light, each pair of indentations acts as a two-point source generating a pair of Young's interference fringe patterns.
openaire +1 more source
Photodegradation of melanin by an interferometric technique
Optics Letters, 2011Photodegradation of melanin thin films is investigated for a UVA wavelength of 355 nm and a UVC wavelength of 244 nm. The technique involves interferometric exposure of melanin with two coherent beams from a low-power UV laser. The periodic photodegradation-grating pattern is monitored by diffraction of a second low-power He-Ne laser. Dependence of the
C W, Farley, A, Kassu, A, Sharma
openaire +2 more sources
A Speckle Interferometric Flame Research Technique
Technical Physics, 2020Methods of recording and automated processing of the results of phase-modulated speckle interferometry of optically dense (opaque to intrinsic radiation) flames containing a condensed phase are described. The use of a high-speed single-frame measurement technique and special processing procedures made it possible to determine the spatiotemporal ...
A. Yu. Popov +5 more
openaire +1 more source
Novel Unambiguous Interferometric Technique for Surface Inspection
CLEO/Europe Conference on Lasers and Electro-Optics, 1998We describe a new interferometric technique using polarisation measurements which eliminates the need to count fringes, giving an unambiguous measurement of surface height. Applicable to the whole image, the height of each pixel element is determined independently without the need for scanning optical components.
J. P. Lesso +3 more
openaire +1 more source
Synthetic interferometric imaging technique for moving objects
Applied Optics, 1976It is shown, theoretically and experimentally, that an object traveling through an interference field formed by two coherent point sources can be imaged via synthetic aperture techniques. The time varying signal scattered by the object is electronically detected and then recorded spatially such that the recording is a one-dimensional hologram of the ...
openaire +2 more sources
Generalized interferometric technique for ultrashort pulse characterization
Applied Optics, 1987A direct Young interferometric technique as a tool to determine ultrashort chirped Gaussian pulses characteristics is described: the intensity as a function of the order of the minima of the interference pattern depends on a function of the pulse characteristics.
openaire +2 more sources
Technique for combining incoherent interferometric images
Journal of the Optical Society of America A, 1999We discuss the use of a physically constrained iterative deconvolution algorithm to combine and deconvolve images taken with interferometric imaging arrays. To demonstrate this method we have simulated imaging with the Large Binocular Telescope [Proc. SPIE3352, 23 (1998)].
E. Keith Hege +3 more
openaire +1 more source
Interferometric characterization of full spheres: data reduction techniques
Applied Optics, 1987This paper describes numerical procedures for data reduction of full spheres from interferometric data taken at various positions around the surface of the sphere. The technique allows the use of practical f/No. optics, incomplete coverage or overlap of the interferograms, and differences in optical alignment of each interferogram.
G N, Lawrence, R D, Day
openaire +2 more sources