Results 21 to 30 of about 814,507 (284)

ERROR ASSESSMENT AND PROPAGATION IN DIGITAL TERRAIN MODELING: A REVIEW [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Digital Terrain Modeling (DTM) is widely used in various applications such as terrain analysis, hydrological modeling, and urban planning. However, the accuracy of DTM heavily relies on the quality of input data and the algorithms used to process the ...
S. Mesbah, M. M. Madbouly, M. Ghanem
doaj   +1 more source

Extending the BEM for Elastic Contact Problems Beyond the Half-Space Approach

open access: yesMathematical Modelling and Analysis, 2016
The boundary element method (BEM) is widely used in fast numerical solvers for concentrated elastic contact problems arising from the wheel-rail contact in the railway industry.
Jing Zhao   +2 more
doaj   +1 more source

Synchronization of Variable-Length Constrained Sequence Codes

open access: yesIEEE Access, 2021
We study the ability of recently developed variable-length constrained sequence codes to determine codeword boundaries in the received sequence upon initial receipt of the sequence and if errors in the received sequence cause synchronization to be lost ...
Congzhe Cao, Ivan Fair
doaj   +1 more source

Quantitative Analysis to the Impacts of IMU Quality in GPS/INS Deep Integration

open access: yesMicromachines, 2015
In the Global Positioning System (GPS)/Inertial Navigation System (INS) deep integration system, the pure negative effect of the INS aiding is mainly the INS navigation error that is independent with the motion dynamics, which determine whether the INS ...
Xiaoji Niu   +5 more
doaj   +1 more source

Fast Error Propagation Probability Estimates by Answer Set Programming and Approximate Model Counting

open access: yesIEEE Access, 2022
We present a method employing Answer Set Programming in combination with Approximate Model Counting for fast and accurate calculation of error propagation probabilities in digital circuits.
Anselm Breitenreiter   +3 more
doaj   +1 more source

Efficiency of Higher Order Finite Elements for the Analysis of Seismic Wave Propagation [PDF]

open access: yes, 2000
The analysis of wave propagation problems in linear damped media must take into account both propagation features and attenuation process. To perform accurate numerical investigations by the finite differences or finite element method, one must consider ...
AKI   +15 more
core   +3 more sources

Error Estimates on Parton Density Distributions [PDF]

open access: yes, 2001
Error estimates on parton density distributions are presently based on the traditional method of least squares minimisation and linear error propagation in global QCD fits. We review the underlying assumptions and the various mathematical representations
Alekhin S I   +10 more
core   +2 more sources

Using Conventional Cameras as Sensors for Estimating Confidence Intervals for the Speed of Vessels from Single Images

open access: yesSensors, 2022
In this paper, we describe an image-based approach for estimating the speed of a moving vessel using the wakes that remain on the surface of water after the vessel has passed.
Jose L. Huillca, Leandro A. F. Fernandes
doaj   +1 more source

Minimum mean-squared error iterative successive parallel arbitrated decision feedback detectors for DS-CDMA systems [PDF]

open access: yes, 2008
In this paper we propose minimum mean squared error (MMSE) iterative successive parallel arbitrated decision feedback (DF) receivers for direct sequence code division multiple access (DS-CDMA) systems.
de Lamare, Rodrigo C.   +1 more
core   +3 more sources

Error Budget for Geolocation of Spectroradiometer Point Observations from an Unmanned Aircraft System

open access: yesSensors, 2018
We investigate footprint geolocation uncertainties of a spectroradiometer mounted on an unmanned aircraft system (UAS). Two microelectromechanical systems-based inertial measurement units (IMUs) and global navigation satellite system (GNSS) receivers ...
Deepak Gautam   +3 more
doaj   +1 more source

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