Results 1 to 10 of about 104,025 (148)

Phase Distortion by Linear Signal Transforms [PDF]

open access: yesFrontiers in Applied Mathematics and Statistics, 2020
In this study, we are concerned with the effect of certain linear transformations of a signal f on its phase. We are, in particular, interested in phase distortions caused by band-limiting operations. The band-limiting operators serve as a motivation for
Frank Filbir, Frank Filbir, Lukas Liehr
doaj   +5 more sources

Phase distortion-free paramagnetic NMR spectra

open access: yesJournal of Magnetic Resonance Open, 2021
The NMR spectra of paramagnetic substances can feature shifts over thousands of ppm. In high magnetic field instruments, this corresponds to extreme offsets, which make it challenging or impossible to achieve uniform excitation without phase distortion ...
Enrico Ravera
doaj   +4 more sources

Anti-Jamming GNSS Antenna Array Receiver with Reduced Phase Distortions Using a Robust Phase Compensation Technique

open access: yesRemote Sensing, 2023
Antenna arrays with adaptive filtering can protect the integrity and functionality of global navigation satellite system (GNSS) receivers against interference. However, a major problem with existing adaptive array processing algorithms is that they cause
Song Li   +4 more
doaj   +1 more source

Computer model of the transponder for the analysis of phase distortions of the signal

open access: yesКосмические аппараты и технологии, 2023
The article discusses issues related to the development of a computer model of an on-board relay complex with linear signal retransmission for the analysis of phase distortion of the signal.
A. V. Shagov   +2 more
doaj   +1 more source

Research on Online Calibration Technology of Wideband Radar Target Simulation System [PDF]

open access: yesHangkong bingqi, 2021
Aiming at the problem of amplitude and phase distortion of echo signal generated by wideband radar target simulation system, this paper estimates the amplitude and phase characteristics of the system by online extraction of amplitude and phase error, and
Wu Haosheng, Pan Minghai, Hu Haipeng
doaj   +1 more source

Analysis of Transmission Loss and Boresight Error of a Curved FSS Radome-Enclosed Antenna

open access: yesIEEE Access, 2021
In this paper, we numerically study a curved frequency selective surface (FSS) radome, which encloses a waveguide slot array antenna operating at 10GHz, using the ray tracing technique and flat model.
Hokeun Shin   +3 more
doaj   +1 more source

Comparative Study of IGBT and SiC MOSFET Three-Phase Inverter: Impact of Parasitic Capacitance on the Output Voltage Distortion

open access: yesActuators, 2023
This study investigates the nonlinearities in three-phase inverters for SiC-based systems and compares their performance to IGBT-based systems. An analytical model of inverter voltage distortion is developed, which accounts not only for dead time (td ...
Paisak Poolphaka   +4 more
doaj   +1 more source

Extended low-frequency phase of the distortion-product otoacoustic emission in human newborns [PDF]

open access: yesJASA Express Letters, 2021
At constant f2/f1 ratios, the phase of the nonlinear distortion component of the 2f1−f2 distortion-product otoacoustic emission (DPOAE) has a steep low-frequency segment and a flat high-frequency segment in adults and newborns.
Anders T. Christensen   +2 more
doaj   +1 more source

Validation and Evaluation of a Ship Echo-Based Array Phase Manifold Calibration Method for HF Surface Wave Radar DOA Estimation and Current Measurement

open access: yesRemote Sensing, 2020
Shore-based phased-array HF radars have been widely used for remotely sensing ocean surface current, wave, and wind around the world. However, phase uncertainties, especially phase distortions, in receiving elements significantly degrade the performance ...
Chen Zhao   +5 more
doaj   +1 more source

Location for single‐phase grounding fault in distribution network based on equivalent admittance distortion rate

open access: yesIET Generation, Transmission & Distribution, 2021
To solve the problem of difficult location (especially high grounding resistances) for single‐phase grounding faults in distribution networks, a fault location method based on equivalent admittance distortion rate is proposed in this paper.
Yougen Chen   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy