Results 261 to 270 of about 9,532 (300)

Differential SAR interferometry using corner reflectors

IEEE International Geoscience and Remote Sensing Symposium, 2003
The differential InSAR technique has the potential for monitoring centimetre-scale ground motion in an accurate and cost-effective manner. Probably the most important limiting factor in the application of InSAR is temporal change in the complex reflectivity of the ground surface during the period between radar acquisitions.
Xia, Y., Kaufmann, H., Guo, X.
openaire   +2 more sources

Research on differential interferometry for spaceborne bistatic SAR

2007 IEEE International Geoscience and Remote Sensing Symposium, 2007
Differential interferometry (D-InSAR) for spaceborne bistatic SAR is studied. According to advantages of the system, particularities and superiorities of D-InSAR based on spaceborne bistatic SAR are discussed first. Then, solid baseline is decomposed and the model of "three-pass" D-InSAR is established.
Xilong Sun, Anxi Yu, Zhen Dong 0001, Diannong Liang   +3 more
openaire   +1 more source

Focused Laser Differential Interferometry

2021
The focused laser differential interferometer (FLDI) is a non-imaging optical diagnostic that is sensitive to density disturbances. A distinguishing feature is reduced sensitivity away from the focal plane of its beams. The spatial resolution is sub-mm, and the temporal resolution is restricted only by photodetector bandwidth, typically >10 MHz ...
openaire   +1 more source

Tropospheric heterogeneities corrections in differential radar interferometry

IEEE International Geoscience and Remote Sensing Symposium, 2003
Differential radar interferometry (DInSAR) has been used more and more widely to monitor crustal deformations due to underground mining and oil extraction, earthquakes, volcanoes, landslides, and so on. However, tropospheric heterogeneities have been identified as one of the major errors in DInSAR, which can be up to 40 cm as derived from dual ...
Linlin Ge, Toshiaki Tsujii, Chris Rizos
openaire   +1 more source

Double-pulsed time differential holographic interferometry

Applied Optics, 1977
A unique method for double-pulsed holographic interferometry has been developed and employed in a meter-long theta-pinch experiment. Q-switching of two orthogonally polarized ruby laser beams, using the same lasing medium but different laser cavities, allows pulse separations of 0.2-100 microsec.
W T, Armstrong, P R, Forman
openaire   +2 more sources

Differential tomography: a new framework for SAR interferometry

IEEE Transactions on Geoscience and Remote Sensing, 2004
A new interferometric mode crossing the differential synthetic aperture radar (SAR) interferometry and multibaseline SAR tomography concepts, that can be termed differential SAR tomography, is proposed. Its potentials, coming from the joint elevation-velocity resolution capability of multiple scatterers, are discussed.
openaire   +3 more sources

Differential adaptive optics for astronomical interferometry

Applied Optics, 1991
Sometimes it suffices to make the wave-front distortions across individual telescopes equal rather than zero. This leads to the concept of differential adaptive optics.
openaire   +2 more sources

Differential interferometry of γ-irradiated optical fibers

Applied Optics, 1980
An interferometric method is discussed which enables changes in refractive index of irradiated optical fibers to be determined. The method was used to determine the changes of step-index fibers irradiated with 1 krad of gamma rays from a (60)Co source.
M, Bertolotti, A, Ferrari, F, Scudieri, A, Serra   +3 more
openaire   +2 more sources

Speckle Interferometry And Differential Speckle Interferometry Using Cross-Spectrum Techniques

Optical Engineering, 1986
A cross-spectrum analysis technique that makes it possible to compute an unbiased estimate of the speckle pattern Wiener spectrum has been developed at the University of Nice. Using a one-dimensional interferometer, the technique has given results on several subjects such as the study of atmospheric modulation transfer function, including anisotropy ...
Claude Aime, Roumain G. Petrov, Francois Martin, Gilbert Ricort, Julien Borgnino   +4 more
openaire   +1 more source

Airborne differential sar interferometry: first results at l-band

IEEE Transactions on Geoscience and Remote Sensing, 2003
In this letter first results of airborne differential SAR interferometry using the German Aerospace Centre (DLR) experimental SAR system (E-SAR)in the interferometric repeat-pass mode are addressed.
Scheiber, R., Reigber, A.
exaly   +1 more source