Results 21 to 30 of about 41,289 (265)
A simple but efficient non-linear method for 2D inversion of magnetic field data based on Ridge-Regression algorithm [PDF]
International Journal of Mining and Geo-Engineering, 2021 In geophysical exploration, inversion is carried out on the observed data to generate a geophysical model, approximating the subsurface geological structure.
Ali Moradzadeh +3 more
doaj +1 more source
Nonlinear Phase Speeds and Depth Inversions [PDF]
Coastal Dynamics 2005, 2006 Experiments were conducted in a laboratory facility under with a fixed bathymetric profile containing a single bar. A hybrid data set was collected consisting of remotely sensed wave data combined with modelgenerated wave amplitude profiles. The data is used to test the improvements in depth retrieval through the use of a nonlinear composite dispersion
Patricio Catalán, Merrick C. Haller
openaire +1 more source
Inverse Designed Metalenses with Extended Depth of Focus [PDF]
ACS Photonics, 2020 We design, fabricate and characterize a cylindrical metasurface lens operating at — 625nm with a depth of focus exceeding that of an ordinary lens using adjoint optimization-based inverse electromagnetic design.
Elyas Bayati +5 more
openaire +3 more sources
Depth Inversion from Wave Frequencies in Temporally Augmented Satellite Video
Remote Sensing, 2022 Optical satellite images of the nearshore water surface offer the possibility to invert water depths and thereby constitute the underlying bathymetry.
Matthijs Gawehn +4 more
doaj +1 more source
Non-inversion conservation tillage as an underestimated driver of tillage erosion
Scientific Reports, 2022 Tillage erosion is a widely underestimated process initiating soil degradation especially in case of large agricultural fields located in rolling topography.
L. K. Öttl +4 more
doaj +1 more source
Monitoring Specified Depth Soil Moisture in Field Scale with Ground Penetrating Radar
智慧农业, 2022 Ground-penetrating radar (GPR) is one of the emerging technologies for soil moisture measurement. However, the measurement accuracy is difficult to determine due to some influence factors including radar wave frequency, soil texture type, etc.
ZHANG Wenhan +6 more
doaj +1 more source
Inverse Depth Parametrization for Monocular SLAM [PDF]
IEEE Transactions on Robotics, 2008 We present a new parametrization for point features within monocular simultaneous localization and mapping (SLAM) that permits efficient and accurate representation of uncertainty during undelayed initialization and beyond, all within the standard extended Kalman filter (EKF).
J. Civera, A.J. Davison, J. Montiel
openaire +1 more source
3D Gravity Inversion on Unstructured Grids
Applied Sciences, 2021 Compared with structured grids, unstructured grids are more flexible to model arbitrarily shaped structures. However, based on unstructured grids, gravity inversion results would be discontinuous and hollow because of cell volume and depth variations. To
Siyuan Sun, Changchun Yin, Xiuhe Gao
doaj +1 more source
SHALLOW BATHYMETRY ESTIMATION BASED ON LANDSAT 8 REMOTELY SENSED DATAAT BOHAI SEA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Bathymetry is a key variable in ocean monitoring and measurement research. It becomes more and more important for development of rapid method to invert shallow sea water depth.
D. J. Zhang +3 more
doaj +1 more source
Combined linear-regression and Monte Carlo approach to modeling exposure age depth profiles [PDF]
Geochronology, 2022 We introduce a set of methods for analyzing cosmogenic-nuclide depth profiles that formally integrates denudation and muogenic production, while retaining the advantages of linear inversion for surfaces with inheritance and age much greater than zero ...
Y. Wang, Y. Wang, M. E. Oskin
doaj +1 more source