Study of a Flexible UAV Proprotor [PDF]
, 2013 This paper is concerned with the evaluation of design techniques, both for the propulsive performance and for the structural behavior of a composite flexible proprotor.
Bénard, Emmanuel +5 more
core +2 more sources
Erratum toTemporal Variations of Seismic Velocity at Paradox Valley, Colorado, Using Passive Image Interferometry [PDF]
Bulletin of the Seismological Society of America, 2016 Peer ...
Ugalde, Arantza +2 more
openaire +2 more sources
Glacier motion estimation using SAR offset-tracking procedures [PDF]
, 2002 Two image-to-image patch offset techniques for estimating feature motion between satellite synthetic aperture radar (SAR) images are discussed. Intensity tracking, based on patch intensity cross-correlation optimization, and coherence tracking, based on
Luckman, A. +4 more
core +1 more source
Geophysical Journal International, 2022 SUMMARY Passive reflection seismic interferometry (PRSI) facilitates imaging the subsurface structure using passive sources but according to the general theory, the target needs to be illuminated equally from all directions to obtain a kinematically correct result.
Ruth A Beckel, Christopher Juhlin
openaire +2 more sources
Passive Seismic Interferometry for Subsurface Imaging
, 2015 Seismic interferometry is a method that allows the retrieval of the seismic response at one receiver from a virtual source at the position of another receiver. The method was first proposed in the seismic exploration community by Claerbout (1968) for a horizontally layered subsurface.
Draganov, Deyan, Ruigrok, E.N.
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No Fossil Disk in the T Tauri Multiple System V773 Tau [PDF]
, 2003 We present new multi-epoch near-infrared and optical high-angular images of the V773 Tau pre-main sequence triple system, a weak-line T Tauri (WTTS) system in which the presence of an evolved, ``fossil'' protoplanetary disk has been inferred on the basis
A. J. Weinberger +14 more
core +2 more sources
Stability of Monitoring Weak Changes in Multiply Scattering Media with Ambient Noise Correlation: Laboratory Experiments [PDF]
, 2009 Previous studies have shown that small changes can be monitored in a scattering medium by observing phase shifts in the coda. Passive monitoring of weak changes through ambient noise correlation has already been applied to seismology, acoustics and ...
Céline Hadziioannou +6 more
core +5 more sources
Signal to Noise Ratio estimation in passive correlation-based imaging [PDF]
, 2013 We consider imaging with passive arrays of sensors using as illumination ambient noise sources. The first step for imaging under such circumstances is the computation of the cross correlations of the recorded signals, which have attracted a lot ...
Garnier, Josselin +3 more
core +3 more sources
On the Green’s function emergence from interferometry of seismic wavefields generated in high-melt glaciers: implications for passive imaging and monitoring [PDF]
The Cryosphere, 2019 Abstract. Ambient noise seismology has revolutionized seismic characterization of the Earth's crust from local to global scales. The elastic Green's function (GF) between two receivers can be reconstructed via cross-correlation of the ambient noise seismograms.
A. Sergeant +9 more
openaire +6 more sources
The Palomar Testbed Interferometer [PDF]
, 1998 The Palomar Testbed Interferometer (PTI) is a long-baseline infrared interferometer located at Palomar Observatory, California. It was built as a testbed for interferometric techniques applicable to the Keck Interferometer. First fringes were obtained in
A. F. Boden +29 more
core +2 more sources