Results 11 to 20 of about 765,097 (272)
Remote Sensing, 2022 The modernization of Global Navigation Satellite System (GNSS) including the transmission of signals on multiple frequencies has greatly promoted the development of the popular PPP (Precise Point Positioning) technique. A key issue of multi-frequency PPP
Lei Zhao, Paul Blunt, Lei Yang
doaj +1 more source
Towards continuous EIT monitoring for hemorrhagic stroke patients
Frontiers in Physiology, 2023 The practical implementation of continuous monitoring of stroke patients by Electrical Impedance Tomography (EIT) is addressed. In a previous paper, we have demonstrated EIT sensitivity to cerebral hemodynamics, using scalp-mounted electrodes, very low ...
Taweechai Ouypornkochagorn +2 more
doaj +1 more source
Multi-Frequency Band Pyroelectric Sensors [PDF]
Sensors, 2014 A methodology is proposed for designing a multi-frequency band pyroelectric sensor which can detect subjects with various frequencies or velocities. A structure with dual pyroelectric layers, consisting of a thinner sputtered ZnO layer and a thicker aerosol ZnO layer, proved helpful in the development of the proposed sensor.
Chun-Ching Hsiao, Sheng-Yi Liu
openaire +3 more sources
Multi-Frequency Canonical Correlation Analysis (MFCCA): A Generalised Decoding Algorithm for Multi-Frequency SSVEP [PDF]
2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2021 Stimulation methods that utilise more than one stimulation frequency have been developed for steady-state visual evoked potential (SSVEP) brain-computer interfaces (BCIs) with the purpose of increasing the number of targets that can be presented simultaneously.
Mu, Jing +3 more
openaire +3 more sources
Evaluation of BDS/GPS Multi-Frequency RTK Positioning Performance under Different Baseline Lengths
Remote Sensing, 2022 The BeiDou Navigation Satellite System (BDS) is fully operational and provides positioning, navigation, and timing services to users worldwide. To comprehensively evaluate the BeiDou-3 Navigation Satellite System (BDS-3) global real-time kinematic (RTK ...
Ershen Wang +6 more
doaj +1 more source
Multi-Frequency Synthesis [PDF]
International Astronomical Union Colloquium, 1991 AbstractA method of improving image fidelity by using observations at multiple frequencies is described. We discuss the power and possible limitations of the technique. Results of narrow frequency range observations with MERLIN and global VLBI are presented. We conclude with a consideration of the possible future impact of this technique.
openaire +1 more source
NaviSoC: High-Accuracy Low-Power GNSS SoC with an Integrated Application Processor
Sensors, 2020 A dual-frequency all-in-one Global Navigation Satellite System (GNSS) receiver with a multi-core 32-bit RISC (reduced instruction set computing) application processor was integrated and manufactured as a System-on-Chip (SoC) in a 110 nm CMOS ...
Tomasz Borejko +11 more
doaj +1 more source
Multi-frequency intravascular ultrasound (IVUS) imaging [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2015 Acute coronary syndrome (ACS) is frequently associated with the sudden rupture of a vulnerable atherosclerotic plaque within the coronary artery. Several unique physiological features, including a thin fibrous cap accompanied by a necrotic lipid core, are the targeted indicators for identifying the vulnerable plaques. Intravascular ultrasound (IVUS), a
Teng, Ma +7 more
openaire +2 more sources
Advances in classical and analytical mechanics: A reviews of author’s results [PDF]
Theoretical and Applied Mechanics, 2013 A review, in subjective choice, of author’s scientific results in area of: classical mechanics, analytical mechanics of discrete hereditary systems, analytical mechanics of discrete fractional order system vibrations, elastodynamics, nonlinear ...
Hedrih-Stevanović Katica R.
doaj +1 more source
Multi-Frequency Synthesis of VLBI Images Using a Generalized Maximum Entropy Method [PDF]
, 2008 A new multi-frequency synthesis algorithm for reconstructing images from multi-frequency VLBI data is proposed. The algorithm is based on a generalized maximum-entropy method, and makes it possible to derive an effective spectral correction for images ...
A. R. Thompson +18 more
core +1 more source