Results 51 to 60 of about 292,061 (298)
Joint DOA and frequency estimation with sub‐Nyquist sampling for more sources than sensors
IET Radar, Sonar & Navigation, 2017 Multiple antenna systems with sub‐Nyquist sampling technique have been applied to jointly estimate frequency and direction‐of‐arrival of narrowband far‐field signals.
Liang Liu, Ping Wei
doaj +1 more source
A signal reconstruction method of wireless sensor network based on compressed sensing
EURASIP Journal on Wireless Communications and Networking, 2020 Compressed sensing (CS) is a new theory for sampling and recovering signal-based sparse transformation. This theory could help us to acquire complete signal at low cost.
Shiyu Zhu +4 more
doaj +1 more source
Impact of Groundtrack Pattern of a Single Pair Mission on the Gravity Recovery Quality
Geosciences, 2018 For future gravity satellite missions, aliasing of high frequency geophysical signals into the lower frequencies is one of the most challenging obstacles to recovering true gravity signals, i.e., to recover the truth.
Siavash Iran-Pour +3 more
doaj +1 more source
The Intriguing Structure of Stripes in GRACE Geopotential Models
Remote Sensing, 2021 Geopotential models derived from Gravity Recovery and Climate Experiment (GRACE) mission measurements are significantly obscured by the presence of a systematic artifact, known as longitudinal stripes.
Spiros Pagiatakis, Athina Peidou
doaj +1 more source
Sinc interpolation of nonuniform samples [PDF]
, 2010 It is well known that a bandlimited signal can be uniquely recovered from nonuniformly spaced samples under certain conditions on the nonuniform grid and provided that the average sampling rate meets or exceeds the Nyquist rate.
core +1 more source
IEEE Access, 2018 Recently developed variable pulse width finite rate of innovation (VPW-FRI) theory offers an efficient way for sampling pulse streams with various shapes at the sub-Nyquist rate.
Guoxing Huang, Ning Fu, Liyan Qiao
doaj +1 more source
Advanced Functional Materials, EarlyView.The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini +9 more
wiley +1 more source
AgileSAR: Achieving Wide-Swath Spaceborne SAR Based on Time-Space Sampling
IEEE Access, 2019 High resolution and wide swath, which are related to imaging quality and observation efficiency, are the key specifications for spaceborne synthetic aperture radar (SAR).
Ze Yu +3 more
doaj +1 more source
A NLLS based sub-Nyquist rate Spectrum Sensing for Wideband Cognitive Radio [PDF]
, 2011 For systems and devices, such as cognitive radio and networks, that need to be aware of available frequency bands, spectrum sensing has an important role.
Haghighi, Kasra +3 more
core +1 more source
Three‐dimensional Antimony Sulfide Based Flat Optics
Advanced Functional Materials, EarlyView.This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang +18 more
wiley +1 more source