Results 51 to 60 of about 1,805,271 (277)
Xampling: analog to digital at sub-Nyquist rates
IET Circuits, Devices & Systems, 2011 15 pages, 22 ...
Moshe Mishali +3 more
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Blind sub-Nyquist GNSS signal detection [PDF]
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016 A satellite navigation receiver traditionally searches for positioning signals using an acquisition procedure. In situations, in which the required information is only a binary decision whether at least one positioning signal is present or absent, the procedure represents an unnecessarily complex solution.
Ondrej Daniel +6 more
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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
Sub-Nyquist Radar via Doppler Focusing [PDF]
IEEE Transactions on Signal Processing, 2014 We investigate the problem of a monostatic pulse-Doppler radar transceiver trying to detect targets, sparsely populated in the radar's unambiguous time-frequency region. Several past works employ compressed sensing (CS) algorithms to this type of problem, but either do not address sample rate reduction, impose constraints on the radar transmitter ...
Omer Bar-Ilan, Yonina C. Eldar
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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
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Sub-Nyquist Cyclostationary Detection for Cognitive Radio [PDF]
IEEE Transactions on Signal Processing, 2017 Cognitive Radio requires efficient and reliable spectrum sensing of wideband signals. In order to cope with the sampling rate bottleneck, new sampling methods have been proposed that sample below the Nyquist rate. However, such techniques decrease the signal to noise ratio (SNR), deteriorating the performance of subsequent energy detection ...
Cohen, Deborah, Eldar, Yonina C.
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Sub-nyquist sampling techniques [PDF]
, 1990 A number of novel theoretical methods have been developed in an attempt to analyse data produced by sampling a signal at below the Nyquist rate and the limitations of the approaches have been investigated.
Bagshaw, Paul Christopher
core
Advanced Functional Materials, EarlyView.A bikitaite‐infused cellulose separator is introduced for Li metal batteries, leveraging bikitaite zeolite's ion‐conductive properties to regulate Li+‐ion flux and suppress dendrite growth. The membrane design ensures uniform Li plating, enhanced electrolyte wettability, and robust thermal/mechanical stability, delivering stable performance and low ...
Isheunesu Phiri +2 more
wiley +1 more source
Sub-Nyquist computational ghost imaging with orthonormalized colored noise pattern
, 2020 Computational ghost imaging generally requires a large number of pattern illumination to obtain a high-quality image. The colored noise speckle pattern was recently proposed to substitute the white noise pattern in a variety of noisy environments and ...
Xiaoyu Nie (4395766) +3 more
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Advanced Functional Materials, EarlyView.Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang +13 more
wiley +1 more source