Results 31 to 40 of about 766,611 (315)

Performance Evaluation of Troposphere Estimated from Galileo-Only Multi-Frequency Observations

Remote Sensing, 2020
The tropospheric delays estimated from the Global Navigation Satellite System (GNSS) have been proven to be an efficient product for monitoring variations of water vapor, which plays an important role in meteorology applications.
Lewen Zhao, Pavel Václavovic, Jan Douša   +2 more
doaj   +1 more source

The Multi-Frequency Decomposition Entropy Learning for Nonlinear fMRI Data Analysis

IEEE Transactions on Neural Systems and Rehabilitation Engineering
Functional magnetic resonance imaging (fMRI) have been widely adopted to explore the underlying neural mechanisms between psychiatric disorders which share common neurobiology and clinical manifestations.
Di Han, Yuhu Shi, Lei Wang, Yueyang Li, Weiming Zeng   +4 more
doaj   +1 more source

Multi-Frequency Holographic Microwave Imaging for Breast Lesion Detection

IEEE Access, 2019
This paper presents the development of a multi-frequency holographic microwave imaging (HMI) algorithm and investigates the feasibility and effectiveness of the proposed algorithm for breast imaging.
Lulu Wang
doaj   +1 more source

Estimation and Analysis of BDS2 and BDS3 Differential Code Biases and Global Ionospheric Maps Using BDS Observations

Remote Sensing, 2021
Following the continuous and stable regional service of BDS2, the BDS3 officially announced its global service in July 2020. To fully take advantage of the new multi-frequency BDS3 signals in ionosphere sensing and positioning, it is essential to ...
Min Li, Yunbin Yuan
doaj   +1 more source

Global Navigation Satellite System Meta-Signals with an Arbitrary Number of Components

Remote Sensing
Global Navigation Satellite System (GNSS) meta-signals are obtained when components from different frequencies are jointly processed as a single entity.
Daniele Borio
doaj   +1 more source

A Meliorated Multi-Frequency Band Pyroelectric Sensor

Sensors, 2015
This article proposes a meliorated multi-frequency band pyroelectric sensor for detecting subjects with various velocities, namely extending the sensing frequency under good performance from electrical signals. A tactic, gradually increasing thickness of
Chun-Ching Hsiao, Sheng-Yi Liu, An-Shen Siao   +2 more
doaj   +1 more source

RBF-Neural Network Applied to the Quality Classification of Tempered 100Cr6 Steel Cams by the Multi-Frequency Nondestructive Eddy Current Testing

Metals, 2017
This article proposes a Radial Basis Function Artificial Neural Network (RBF-ANN) to classify tempered steel cams as correctly or incorrectly treated pieces by using multi-frequency nondestructive eddy current testing.
Víctor Martínez-Martínez, Javier Garcia-Martin, Jaime Gomez-Gil   +2 more
doaj   +1 more source

Single-Epoch Ambiguity Resolution of a Large-Scale CORS Network with Multi-Frequency and Multi-Constellation GNSS

Remote Sensing, 2022
Ambiguity resolution at Continuously Operating Reference Station (CORS) network sites is the key step in the whole processing chain of Network Real Time Kinematic (NRTK).
Shengyue Ji, Guofeng Liu, Duojie Weng, Zhenjie Wang, Kaifei He, Wu Chen   +5 more
doaj   +1 more source

Multi-frequency observations of Swift J1626.6-5156 [PDF]

Astronomy & Astrophysics, 2011
New figure and new table. Optical spectroscopic classification performed.
Reig, P., Nespoli, E., Fabregat, J., Mennickent, R. E.   +3 more
openaire   +6 more sources

GNSS-IR Snow Depth Retrieval from Multi-GNSS and Multi-Frequency Data

Remote Sensing, 2021
Global navigation satellite system interferometric reflectometry (GNSS-IR) represents an extra method to detect snow depth for climate research and water cycle managing. However, using a single frequency of GNSS-IR for snow depth retrieval is often found
Jinsheng Tu, Haohan Wei, Rui Zhang, Lei Yang, Jichao Lv, Xiaoming Li, Shihai Nie, Peng Li, Yanxia Wang, Nan Li   +9 more
doaj   +1 more source