Bibliografías temáticas / Decorrelation noise / Artículos de revistas
Siga este enlace para ver otros tipos de publicaciones sobre el tema: Decorrelation noise.

Artículos de revistas sobre el tema "Decorrelation noise"

Autor: Grafiati
Publicado: 25 de mayo de 2024

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte los 50 mejores artículos de revistas para su investigación sobre el tema "Decorrelation noise".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Explore artículos de revistas sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.

1

Palmer, Alan R., Dan Jiang, and David McAlpine. "Desynchronizing Responses to Correlated Noise: A Mechanism for Binaural Masking Level Differences at the Inferior Colliculus." Journal of Neurophysiology 81, no. 2 (1999): 722–34. http://dx.doi.org/10.1152/jn.1999.81.2.722.

Texto completo
Resumen
Desynchronizing responses to correlated noise: a mechanism for binaural masking level differences at the inferior colliculus. We examined the adequacy of decorrelation of the responses to dichotic noise as an explanation for the binaural masking level difference (BMLD). The responses of 48 low-frequency neurons in the inferior colliculus of anesthetized guinea pigs were recorded to binaurally presented noise with various degrees of interaural correlation and to interaurally correlated noise in the presence of 500-Hz tones in either zero or π interaural phase. In response to fully correlated no
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Tuzlukov, V. P. "Two approaches to multiuser detection over fading channels." Doklady BGUIR 19, no. 1 (2021): 11–20. http://dx.doi.org/10.35596/1729-7648-2021-19-1-11-20.

Texto completo
Resumen
In this paper, two different receiver structures to multiuser detection that are appropriate for the code-division multiple-access systems with antenna arrays in fading channels are investigated and compared. We analyze and compare the performance of the two different multiuser detection structures for uplink or downlink channels. The number of elements of receiving antenna array may be limited in the downlink channel due to the small size of receivers. We assume a synchronous system, but it can be easily extended to an asynchronous system. The first approach is based on the distributed decorr
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Jiang, Guoqing, Chao Sun, and Lei Xie. "Diagonal Denoising for Spatially Correlated Noise Based on Diagonalization Decorrelation in Underwater Radiated Noise Measurement." Journal of Marine Science and Engineering 10, no. 4 (2022): 502. http://dx.doi.org/10.3390/jmse10040502.

Texto completo
Resumen
In underwater radiated noise measurement using a vertical linear array, a diagonalization-decorrelation-based diagonal denoising method is proposed to improve the denoising effect for spatially correlated noise. Firstly, the ambient noise cross-spectral matrix is measured without the radiated noise source. Subsequently, the eigenvector matrix of the ambient noise cross-spectral matrix is utilized to implement a unitary transformation for the received data, which eliminates the correlation of the received noise and transforms the received noise cross-spectral matrix into a diagonal matrix, then
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Arienzo, Alberto, Fabrizio Argenti, Luciano Alparone, and Monica Gherardelli. "Accurate Despeckling and Estimation of Polarimetric Features by Means of a Spatial Decorrelation of the Noise in Complex PolSAR Data." Remote Sensing 12, no. 2 (2020): 331. http://dx.doi.org/10.3390/rs12020331.

Texto completo
Resumen
In this work, we extended a procedure for the spatial decorrelation of fully-developed speckle, originally developed for single-polarization SAR data, to fully-polarimetric SAR data. The spatial correlation of the noise depends on the tapering window in the Fourier domain used by the SAR processor to avoid defocusing of targets caused by Gibbs effects. Since each polarimetric channel is focused independently of the others, the noise-whitening procedure can be performed applying the decorrelation stage to each channel separately. Equivalently, the noise-whitening stage is applied to each elemen
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Chen, Yaogang, Qian Sun, and Jun Hu. "Quantitatively Estimating of InSAR Decorrelation Based on Landsat-Derived NDVI." Remote Sensing 13, no. 13 (2021): 2440. http://dx.doi.org/10.3390/rs13132440.

Texto completo
Resumen
As a by-product of Interferometric Synthetic Aperture Radar (SAR, InSAR) technique, interferometric coherence is a measure of the decorrelation noise for InSAR observation, where the lower the coherence value, the more serious the decorrelation noise. In the densely vegetated area, the coherence value could be too low to obtain any valuable signals, leading to the degradation of InSAR performance and the possible waste of expensive SAR data. Normalized Difference Vegetation Index (NDVI) value is a measure of the vegetation coverage and can be estimated from the freely available optical satelli
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Sathesh, Sathesh, and Dr J. Samuel Manoharan. "De-correlation stretch filtering approach for effective Poisson reduction in galaxy Images." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 11, no. 9 (2013): 2987–93. http://dx.doi.org/10.24297/ijct.v11i9.3408.

Texto completo
Resumen
Noise reduction is one of the most important processes to enhance the quality of images. This paper proposes a statistical filter, the decorrelation stretch filter for the reduction of Poisson noise that occurs frequently in galaxy images. The primary purpose of decorrelation stretch is visual enhancement. Decorrstretch is applied to the three band images but can also work on arbitrary number of bands. This filter enhances the color separation of an image with significant band-band correlation. Effectiveness of the proposed filter is compared on the basis of Peak Signal to Noise Ratio (PSNR),
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Jung, H. Y., D. Y. Kim, and C. K. Un. "Frame decorrelation for noise-robust speech recognition." Electronics Letters 32, no. 13 (1996): 1163. http://dx.doi.org/10.1049/el:19960808.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Pradhan, Somanath, Xiaojun Qiu, and Jinchen Ji. "A Four-Stage Method for Active Control with Online Feedback Path Modelling Using Control Signal." Applied Sciences 9, no. 15 (2019): 2973. http://dx.doi.org/10.3390/app9152973.

Texto completo
Resumen
The presence of control signal feedback to the reference microphone in feedforward active control systems deteriorates the control performance. A four-stage method is proposed in this paper to carry out online feedback path modelling with the control signal. It consists of controller initialization, feedback path modelling using decorrelation filters, active control operation, and feedback path change detection for maintaining the control operation. In contrast to the existing auxiliary noise injection method, the proposed method uses five switches and three thresholds to control and maintain
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Wang, Xinmei, Leimin Wang, Longsheng Wei, and Feng Liu. "Estimation of Object Motion State Based on Adaptive Decorrelation Kalman Filtering." Journal of Advanced Computational Intelligence and Intelligent Informatics 23, no. 4 (2019): 749–57. http://dx.doi.org/10.20965/jaciii.2019.p0749.

Texto completo
Resumen
To estimate the motion state of object feature point in image space, an adaptive decorrelation Kalman filtering model is proposed in this paper. The model is based on the Kalman filtering method. A first-order Markov sequence model is used to describe the colored measurement noise. To eliminate the colored noise, the measurement equation is reconstructed and then a cross-correlation between the process noise and the newly measurement noise is established. To eliminate the noise cross-correlation, a reconstructed process equation is proposed. According to the new process and measurement equatio
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Aghanim, N., M. Ashdown, J. Aumont, et al. "Planck intermediate results." Astronomy & Astrophysics 599 (February 28, 2017): A51. http://dx.doi.org/10.1051/0004-6361/201629164.

Texto completo
Resumen
The characterization of the Galactic foregrounds has been shown to be the main obstacle in thechallenging quest to detect primordial B-modes in the polarized microwave sky. We make use of the Planck-HFI 2015 data release at high frequencies to place new constraints on the properties of the polarized thermal dust emission at high Galactic latitudes. Here, we specifically study the spatial variability of the dust polarized spectral energy distribution (SED), and its potential impact on the determination of the tensor-to-scalar ratio, r. We use the correlation ratio of the CBBℓ angular power spec
Los estilos APA, Harvard, Vancouver, ISO, etc.
11

Pelgrims, V., S. E. Clark, B. S. Hensley, et al. "Evidence for line-of-sight frequency decorrelation of polarized dust emission in Planck data." Astronomy & Astrophysics 647 (March 2021): A16. http://dx.doi.org/10.1051/0004-6361/202040218.

Texto completo
Resumen
If a single line of sight (LOS) intercepts multiple dust clouds with different spectral energy distributions and magnetic field orientations, then the frequency scaling of each of the Stokes Q and U parameters of the thermal dust emission may be different, a phenomenon we refer to as LOS frequency decorrelation. We present first evidence for LOS frequency decorrelation in Planck data using independent measurements of neutral-hydrogen (HI) emission to probe the 3D structure of the magnetized interstellar medium (ISM). We use HI-based measurements of the number of clouds per LOS and the magnetic
Los estilos APA, Harvard, Vancouver, ISO, etc.
12

Mancini-Terracciano, C., and M. Vignati. "Noise correlation and decorrelation in arrays of bolometric detectors." Journal of Instrumentation 7, no. 06 (2012): P06013. http://dx.doi.org/10.1088/1748-0221/7/06/p06013.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
13

Zhao, Sipei, Eva Cheng, Xiaojun Qiu, Ian Burnett, and Jacob Chia-chun Liu. "Spatial decorrelation of wind noise with porous microphone windscreens." Journal of the Acoustical Society of America 143, no. 1 (2018): 330–39. http://dx.doi.org/10.1121/1.5021335.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
14

Picart, Pascal. "Recent advances in speckle decorrelation modeling and processing in digital holographic interferometry." Photonics Letters of Poland 13, no. 4 (2021): 73. http://dx.doi.org/10.4302/plp.v13i4.1126.

Texto completo
Resumen
Digital holography, and especially digital holographic interferometry, is a powerful approach for the characterization of modifications at the surface or in the volume of objects. Nevertheless, the reconstructed phase data from holographic interferometry is corrupted by the speckle noise. In this paper, we discuss on recent advances in speckle decorrelation noise removal. Two main topics are considered. The first one presents recent results in modelling the decorrelation noise in digital Fresnel holography. Especially the anisotropy of the decorrelation noise is established. The second topic p
Los estilos APA, Harvard, Vancouver, ISO, etc.
15

Cocianu, Cătălina, and Alexandru Stan. "Neural Architectures for Correlated Noise Removal in Image Processing." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/6153749.

Texto completo
Resumen
The paper proposes a new method that combines the decorrelation and shrinkage techniques to neural network-based approaches for noise removal purposes. The images are represented as sequences of equal sized blocks, each block being distorted by a stationary statistical correlated noise. Some significant amount of the induced noise in the blocks is removed in a preprocessing step, using a decorrelation method combined with a standard shrinkage-based technique. The preprocessing step provides for each initial image a sequence of blocks that are further compressed at a certain rate, each componen
Los estilos APA, Harvard, Vancouver, ISO, etc.
16

Korchynskyi, Volodymyr, Valerii Hordiichuk, Vitalii Kildishev, Oleksandr Riabukha, Sergii Staikutsa, and Khaled Alfaiomi. "Method of information protection based on the integration of probabilistic encryption and noise immune coding." Radioelectronic and Computer Systems, no. 4 (December 6, 2023): 184–95. http://dx.doi.org/10.32620/reks.2023.4.13.

Texto completo
Resumen
The subject matter of this article is the processes of increasing information security in communication systems to solve applied problems that are critical in the transmission of confidential data. The goal is to develop a multi-stage method for protecting information from unauthorized access, based on probabilistic encryption integration, error-correcting code, and error decorrelation. The tasks to be solved are as follows: to develop a probabilistic encryption algorithm that considers the entropy of the characters’ appearance in a message; to implement iterative coding with variable paramete
Los estilos APA, Harvard, Vancouver, ISO, etc.
17

Schaan, Emmanuel, and Martin White. "Multi-tracer intensity mapping: cross-correlations, line noise & decorrelation." Journal of Cosmology and Astroparticle Physics 2021, no. 05 (2021): 068. http://dx.doi.org/10.1088/1475-7516/2021/05/068.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
18

Fallon, Susan M., and Donald E. Robinson. "The effects of decorrelation on the discriminability of noise samples." Journal of the Acoustical Society of America 81, S1 (1987): S33. http://dx.doi.org/10.1121/1.2024195.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
19

Rao, Qiang, and Jianjun Wang. "Suppressing Random Artifacts in Reference Sensor Pattern Noise via Decorrelation." IEEE Signal Processing Letters 24, no. 6 (2017): 809–13. http://dx.doi.org/10.1109/lsp.2017.2681426.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
20

Vahala, Kerry J., and Michael A. Newkirk. "Intensity noise reduction in semiconductor lasers by amplitude‐phase decorrelation." Applied Physics Letters 57, no. 10 (1990): 974–76. http://dx.doi.org/10.1063/1.103530.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
21

Sivaramakrishnan, Anand, James P. Lloyd, Philip E. Hodge, and Bruce A. Macintosh. "Speckle Decorrelation and Dynamic Range in Speckle Noise–limited Imaging." Astrophysical Journal 581, no. 1 (2002): L59—L62. http://dx.doi.org/10.1086/345826.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
22

Uribe-Patarroyo, Néstor, Anouk L. Post, Sebastián Ruiz-Lopera, Dirk J. Faber, and Brett E. Bouma. "Noise and bias in optical coherence tomography intensity signal decorrelation." OSA Continuum 3, no. 4 (2020): 709. http://dx.doi.org/10.1364/osac.385431.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
23

Duan, Meng, Bing Xu, Zhiwei Li, et al. "A New Weighting Method by Considering the Physical Characteristics of Atmospheric Turbulence and Decorrelation Noise in SBAS-InSAR." Remote Sensing 12, no. 16 (2020): 2557. http://dx.doi.org/10.3390/rs12162557.

Texto completo
Resumen
Time series of ground subsidence can not only be used to describe motion produced by various anthropocentric and natural process but also to better understand the processes and mechanisms of geohazards and to formulate effective protective measures. For high-accuracy measurement of small baseline subset interferometric synthetic aperture radar (SBAS-InSAR), atmospheric turbulence and decorrelation noise are regarded as random variables and cannot be accurately estimated by a deterministic model when large spatio-temporal variability presents itself. Various weighting methods have been proposed
Los estilos APA, Harvard, Vancouver, ISO, etc.
24

Jiang, Yong, Ya Ping Wang, and Dong Mei Zhao. "Self-Adaptive Wavelet Based on Parametric Equation in Manufacturing Engineering." Advanced Materials Research 323 (August 2011): 176–80. http://dx.doi.org/10.4028/www.scientific.net/amr.323.176.

Texto completo
Resumen
The paper analyzes the difference between useful signal and noise signal in dissemination characteristic inside wavelet space in manufacturing engineering, and then puts forward a search algorithm based on wavelet decorrelation white noise testing and involved with the parameters in a parametric equation. The algorithm can select wavelet transform to realize the best noise reduction effect in a self-adaptive way according to the characteristic of signal containing noise and signal to noise ratio. At last, simulation experiment and engineering application are made, and their results are compare
Los estilos APA, Harvard, Vancouver, ISO, etc.
25

Lauritzen, K. C., S. H. Talisa, and M. Peckerar. "Impact of Decorrelation Techniques on Sampling Noise in Radio-Frequency Applications." IEEE Transactions on Instrumentation and Measurement 59, no. 9 (2010): 2272–79. http://dx.doi.org/10.1109/tim.2009.2036344.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
26

Molimard, Jérôme, Raul Cordero, and Alain Vautrin. "Signal-to-noise based local decorrelation compensation for speckle interferometry applications." Applied Optics 47, no. 19 (2008): 3535. http://dx.doi.org/10.1364/ao.47.003535.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
27

Awad, Samer I., and Jesse T. Yen. "3D Strain Imaging Using a Rectilinear 2D Array." Ultrasonic Imaging 29, no. 4 (2007): 220–30. http://dx.doi.org/10.1177/016173460702900403.

Texto completo
Resumen
Under mechanical compression, tissue movements are inherently three-dimensional. 2-D strain imaging can suffer from decorrelation noise caused by out-of-plane tissue movement in elevation. With 3-D strain imaging, all tissue movements can be estimated and compensated, hence minimizing out-of-plane decorrelation noise. Promising 3-D strain imaging results have been shown using 1 -D arrays with mechanical translation in elevation. However, the relatively large slice thickness and mechanical translation can degrade image quality. Using 2-D arrays, an improved elevational resolution can be achieve
Los estilos APA, Harvard, Vancouver, ISO, etc.
28

Poittevin, Julien, Pascal Picart, François Gautier, and Charles Pezerat. "Quality assessment of combined quantization-shot-noise-induced decorrelation noise in high-speed digital holographic metrology." Optics Express 23, no. 24 (2015): 30917. http://dx.doi.org/10.1364/oe.23.030917.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
29

Righetti, Raffaella, Jonathan Ophir, Brian S. Garra, Rajah M. Chandrasekhar, and Thomas A. Krouskop. "A New Method for Generating Poroelastograms in Noisy Environments." Ultrasonic Imaging 27, no. 4 (2005): 201–20. http://dx.doi.org/10.1177/016173460502700401.

Texto completo
Resumen
Poroelastography has been recently introduced as a new elastographic technique that may be used to describe the spatial and temporal behavior of poroelastic materials. The experimental methodology proposed thus far for phantoms and tissues in vitro requires the acquisition of a precompression rf frame, the application of a unit step strain compression to the sample and the acquisition of subsequent post-compression frames from the material. Elastograms and poroelastograms are generated by cross-correlating the sequentially-acquired postcompression frames with the reference precompression frame
Los estilos APA, Harvard, Vancouver, ISO, etc.
30

Tripp, Bryan P. "Decorrelation of Spiking Variability and Improved Information Transfer Through Feedforward Divisive Normalization." Neural Computation 24, no. 4 (2012): 867–94. http://dx.doi.org/10.1162/neco_a_00255.

Texto completo
Resumen
Response variability is often positively correlated in pairs of similarly tuned neurons in the visual cortex. Many authors have considered correlated variability to prevent postsynaptic neurons from averaging across large groups of inputs to obtain reliable stimulus estimates. However, a simple average of variability ignores nonlinearities in cortical signal integration. This study shows that feedforward divisive normalization of a neuron's inputs effectively decorrelates their variability. Furthermore, we show that optimal linear estimates of a stimulus parameter that are based on normalized
Los estilos APA, Harvard, Vancouver, ISO, etc.
31

MATSUMOTO, Mitsuharu, та Shuji HASHIMOTO. "Estimation of Optimal Parameter in ε-Filter Based on Signal-Noise Decorrelation". IEICE Transactions on Information and Systems E92-D, № 6 (2009): 1312–15. http://dx.doi.org/10.1587/transinf.e92.d.1312.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
32

Newkirk, M. A., and K. J. Vahala. "Amplitude-phase decorrelation: a method for reducing intensity noise in semiconductor lasers." IEEE Journal of Quantum Electronics 27, no. 1 (1991): 13–22. http://dx.doi.org/10.1109/3.73536.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
33

Goutcher, R., L. M. O'Kane, and P. B. Hibbard. "Effects of inter-ocular contrast difference and decorrelation noise on disparity discrimination." Journal of Vision 9, no. 8 (2010): 281. http://dx.doi.org/10.1167/9.8.281.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
34

He-Young Jung and Soo-Young Lee. "On the temporal decorrelation of feature parameters for noise-robust speech recognition." IEEE Transactions on Speech and Audio Processing 8, no. 4 (2000): 407–16. http://dx.doi.org/10.1109/89.848222.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
35

Bendoumia, Rédha, Mohammed Kerkar, and Sohib Abderrahim Bouzekkar. "Acoustic noise reduction by new sub-band forward symmetric adaptive decorrelation algorithms." Applied Acoustics 152 (September 2019): 118–26. http://dx.doi.org/10.1016/j.apacoust.2019.03.030.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
36

ZHANG, Lifu, Xuhui LU, Yi CEN, and Xuejian SUN. "Optimized spatial and spectral decorrelation method for noise estimation in hyperspectral images." National Remote Sensing Bulletin 25, no. 7 (2021): 1411–21. http://dx.doi.org/10.11834/jrs.20219043.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
37

Zhu, Qi, Yuxuan Ding, Dawei Tu, Haiyan Zhang, and Yue Peng. "Experimental Study of Defect Localization in a Cross-Ply Fiber Reinforced Composite with Diffuse Ultrasonic Waves." Applied Sciences 9, no. 11 (2019): 2334. http://dx.doi.org/10.3390/app9112334.

Texto completo
Resumen
Diffuse wave inspection benefits from multiple scattering and is suitable for the nondestructive testing of complex structures with high sensitivity. This paper aims to localize the defect in a cross-ply carbon fiber reinforced polymer composite with the diffuse wave field experimentally based on the Locadiff technique. Firstly, the wave diffusivity and dissipation parameters are determined from the diffuse waveforms. Great dissipation is found for this composite plate due to its strong viscoelasticity, which makes the amplitude attenuate fast in a short propagation distance. The signal-to-noi
Los estilos APA, Harvard, Vancouver, ISO, etc.
38

Cassé, Gibert, Edouart, Chomette, and Crevoisier. "Optical Energy Variability Induced by Speckle: The Cases of MERLIN and CHARM-F IPDA Lidar." Atmosphere 10, no. 9 (2019): 540. http://dx.doi.org/10.3390/atmos10090540.

Texto completo
Resumen
In the context of the FrenchGerman space lidar mission MERLIN (MEthane Remote LIdar missioN) dedicated to the determination of the atmospheric methane content, an end-to-end mission simulator is being developed. In order to check whether the instrument design meets the performance requirements, simulations have to count all the sources of noise on the measurements like the optical energy variability induced by speckle. Speckle is due to interference as the lidar beam is quasi monochromatic. Speckle contribution to the error budget has to be estimated but also simulated. In this paper, the spec
Los estilos APA, Harvard, Vancouver, ISO, etc.
39

Qi, Yang, Yu Wang, Jun Hong, and Shaoyan Du. "Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L." Remote Sensing 13, no. 14 (2021): 2750. http://dx.doi.org/10.3390/rs13142750.

Texto completo
Resumen
In this paper, additional reference height errors, caused by the penetration depth and Signal to Noise Ratio (SNR) decorrelation in desert regions in L-band spaceborne bistatic interferemetric SAR, will introduce significant errors in nowadays baseline calibration method based on distributed target and consequent DEM products. To quantify these two errrors, this paper takes the TwinSAR-L mission as an example, gives an introduction of TwinSAR-L, outlines the theoretical baseline accuracy requirements that need to be satisfied in the TwinSAR-L mission and addresses the additional reference heig
Los estilos APA, Harvard, Vancouver, ISO, etc.
40

Brand, Andreas, Christian Noss, Christian Dinkel, and Markus Holzner. "High-Resolution Measurements of Turbulent Flow Close to the Sediment–Water Interface Using a Bistatic Acoustic Profiler." Journal of Atmospheric and Oceanic Technology 33, no. 4 (2016): 769–88. http://dx.doi.org/10.1175/jtech-d-15-0152.1.

Texto completo
Resumen
AbstractVelocity profile measurements at high spatial and temporal resolution are required for the detailed study of solute and momentum transfer close to the sediment–water interface. Still, not many devices allow such measurements in natural systems. Recently, a bistatic acoustic current profiler has become commercially available that allows the recording of profiles at down to 1-mm resolution with a maximum frequency of 100 Hz and a profile length of 3.5 cm. This study tested the ability to characterize the turbulent flow of this profiler in a laboratory flume and in a run of the river rese
Los estilos APA, Harvard, Vancouver, ISO, etc.
41

Nardelli, Bruno Buongiorno. "A Novel Approach for the High-Resolution Interpolation of In Situ Sea Surface Salinity." Journal of Atmospheric and Oceanic Technology 29, no. 6 (2012): 867–79. http://dx.doi.org/10.1175/jtech-d-11-00099.1.

Texto completo
Resumen
Abstract A novel technique for the high-resolution interpolation of in situ sea surface salinity (SSS) observations is developed and tested. The method is based on an optimal interpolation (OI) algorithm that includes satellite sea surface temperature (SST) in the covariance estimation. The covariance function parameters (i.e., spatial, temporal, and thermal decorrelation scales) and the noise-to-signal ratio are determined empirically, by minimizing the root-mean-square error and mean error with respect to fully independent validation datasets. Both in situ observations and simulated data ext
Los estilos APA, Harvard, Vancouver, ISO, etc.
42

Piniard, Matthieu, Béatrice Sorrente, Gilles Hug, and Pascal Picart. "Theoretical analysis of surface-shape-induced decorrelation noise in multi-wavelength digital holography." Optics Express 29, no. 10 (2021): 14720. http://dx.doi.org/10.1364/oe.423391.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
43

Kobayashi, Masaki, Yasunori Nagasaka, and Yoshio Itoh. "A Noise Free Adaptive Transversal Notch Filter Using SSCF Algorithm with Decorrelation Parameter." IEEJ Transactions on Electronics, Information and Systems 133, no. 12 (2013): 2236–42. http://dx.doi.org/10.1541/ieejeiss.133.2236.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
44

Xia, Haiting, Silvio Montresor, Rongxin Guo, et al. "Phase calibration unwrapping algorithm for phase data corrupted by strong decorrelation speckle noise." Optics Express 24, no. 25 (2016): 28713. http://dx.doi.org/10.1364/oe.24.028713.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
45

Stähler, Simon C., and Karin Sigloch. "Fully probabilistic seismic source inversion – Part 2: Modelling errors and station covariances." Solid Earth 7, no. 6 (2016): 1521–36. http://dx.doi.org/10.5194/se-7-1521-2016.

Texto completo
Resumen
Abstract. Seismic source inversion, a central task in seismology, is concerned with the estimation of earthquake source parameters and their uncertainties. Estimating uncertainties is particularly challenging because source inversion is a non-linear problem. In a companion paper, Stähler and Sigloch (2014) developed a method of fully Bayesian inference for source parameters, based on measurements of waveform cross-correlation between broadband, teleseismic body-wave observations and their modelled counterparts. This approach yields not only depth and moment tensor estimates but also source tim
Los estilos APA, Harvard, Vancouver, ISO, etc.
46

Peng, Hui, Juhong Tie, and Dequan Guo. "An Iterative Axial and Lateral Ultrasound Strain Estimator Using Subband Division." Journal of Medical Imaging and Health Informatics 10, no. 5 (2020): 1057–68. http://dx.doi.org/10.1166/jmihi.2020.3024.

Texto completo
Resumen
Conventional ultrasound strain imaging usually only calculates the axial strain. Although axial strain is the main component of two dimensional strain field, lateral displacement and strain estimation can provide additional information of human mechanical properties. Shear strain and Poisson’s ratio can be estimated by using lateral strain estimation technique. Low lateral sampling rate and decorrelation noise of lateral radio frequency (RF) signal caused by axial displacement motion increase the difficulty of lateral strain estimation. Subband division technique is to divide a broadband signa
Los estilos APA, Harvard, Vancouver, ISO, etc.
47

Siegel, Jared C., Ryan A. Rubenzahl, Samuel Halverson, and Andrew W. Howard. "Into the Depths: A New Activity Metric for High-precision Radial Velocity Measurements Based on Line Depth Variations." Astronomical Journal 163, no. 6 (2022): 260. http://dx.doi.org/10.3847/1538-3881/ac609a.

Texto completo
Resumen
Abstract The discovery and characterization of extrasolar planets using radial velocity (RV) measurements is limited by noise sources from the surfaces of host stars. Current techniques to suppress stellar magnetic activity rely on decorrelation using an activity indicator (e.g., strength of the Ca ii lines, width of the cross-correlation function, broadband photometry) or measurement of the RVs using only a subset of spectral lines that have been shown to be insensitive to activity. Here, we combine the above techniques by constructing a high-signal-to-noise activity indicator, the depth metr
Los estilos APA, Harvard, Vancouver, ISO, etc.
48

FLANDRIN, PATRICK, and PAULO GONÇALVÈS. "EMPIRICAL MODE DECOMPOSITIONS AS DATA-DRIVEN WAVELET-LIKE EXPANSIONS." International Journal of Wavelets, Multiresolution and Information Processing 02, no. 04 (2004): 477–96. http://dx.doi.org/10.1142/s0219691304000561.

Texto completo
Resumen
Huang's data-driven technique of Empirical Mode Decomposition (EMD) is applied to the versatile, broadband, model of fractional Gaussian noise (fGn). The experimental spectral analysis and statistical characterization of the obtained modes reveal an equivalent filter bank structure which shares most properties of a wavelet decomposition in the same context, in terms of self-similarity, quasi-decorrelation and variance progression. Furthermore, the spontaneous adaptation of EMD to "natural" dyadic scales is shown, rationalizing the method as an alternative way for estimating the fGn Hurst expon
Los estilos APA, Harvard, Vancouver, ISO, etc.
49

Mestre-Quereda, Alejandro, Juan M. Lopez-Sanchez, and Jordi J. Mallorqui. "Range Spectral Filtering in SAR Interferometry: Methods and Limitations." Sensors 22, no. 22 (2022): 8696. http://dx.doi.org/10.3390/s22228696.

Texto completo
Resumen
A geometrical decorrelation constitutes one of the sources of noise present in Synthetic Aperture Radar (SAR) interferograms. It comes from the different incidence angles of the two images used to form the interferograms, which cause a spectral (frequency) shift between them. A geometrical decorrelation must be compensated by a specific filtering technique known as range filtering, the goal of which is to estimate this spectral displacement and retain only the common parts of the images’ spectra, reducing the noise and improving the quality of the interferograms. Multiple range filters have be
Los estilos APA, Harvard, Vancouver, ISO, etc.
50

Qian, Nijia, Guobin Chang, Pavel Ditmar, Jingxiang Gao, and Zhengqiang Wei. "Sparse DDK: A Data-Driven Decorrelation Filter for GRACE Level-2 Products." Remote Sensing 14, no. 12 (2022): 2810. http://dx.doi.org/10.3390/rs14122810.

Texto completo
Resumen
High-frequency and correlated noise filtering is one of the important preprocessing steps for GRACE level-2 products before calculating mass anomaly. Decorrelation and denoising kernel (DDK) filters are usually considered as such optimal filters to solve this problem. In this work, a sparse DDK filter is proposed. This is achieved by replacing Tikhonov regularization in traditional DDK filters with weighted L1 norm regularization. The proposed sparse DDK filter adopts a time-varying error covariance matrix, while the equivalent signal covariance matrix is adaptively determined by the Gravity R
Los estilos APA, Harvard, Vancouver, ISO, etc.
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía