Results 31 to 40 of about 2,512,899 (272)
IEEE Access, 2018 Sub-Nyquist sampling is a common means of interfering with inverse synthetic aperture radar (ISAR) imaging, which has been validated for the feasibility of 1-D compressive sensing (CS) ISAR imaging.
Jiyuan Chen +3 more
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Sub-Nyquist processing with the modulated wideband converter [PDF]
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010 Sub-Nyquist systems capture the signal information in a different fashion than uniform high-rate samples. Consequently, digital processing, which is the prime reason for leaving the analog domain, becomes challenging. We propose a digital algorithm that translates samples obtained by the modulated wideband converter, a recent sub-Nyquist system, to the
Moshe Mishali +2 more
openaire +1 more source
Wideband Power Spectrum Estimation Based on Sub-Nyquist Sampling in Cognitive Radio Networks
IEEE Access, 2019 The wideband spectrum estimation is an essential step in the wireless network. In order to avoid employing power-hungry high-rate analog-to-digital converters (ADCs), the CS-based sub-Nyquist sampling approaches are used to estimate the wideband spectrum.
Yijiu Zhao +4 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
Sub-Nyquist sampling and detection in Costas coded pulse compression radars [PDF]
, 2016 Modern pulse compression radar involves digital signal processing of high bandwidth pulses modulated with different coding schemes. One of the limiting factors in the radar’s design to achieve desired target range and resolution is the need of high rate ...
Hanif, Adnan +2 more
core +2 more sources
Sub-Nyquist Wideband Spectrum Sensing and Sharing [PDF]
, 2017 PhDThe rising popularity of wireless services resulting in spectrum shortage has motivated dynamic spectrum sharing to facilitate e cient usage of the underutilized spectrum.
Ma, Yuan
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Sub-Nyquist Radar: Principles and Prototypes
CoRR, 2018 In the past few years, new approaches to radar signal processing have been introduced which allow the radar to perform signal detection and parameter estimation from much fewer measurements than that required by Nyquist sampling. These systems - referred to as sub-Nyquist radars - model the received signal as having finite rate of innovation and employ
Kumar Vijay Mishra, Yonina C. Eldar
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SubNyquist Frequency Efficient Audio Compression
Al-Khawarizmi Engineering Journal, 2012 This paper presents the application of a framework of fast and efficient compressive sampling based on the concept of random sampling of sparse Audio signal. It provides four important features. (i) It is universal with a variety of sparse signals.
Ahmed A. Hashim
doaj +2 more sources
A Constrained Random Demodulator for Sub-Nyquist Sampling [PDF]
IEEE Transactions on Signal Processing, 2013 Preprint of a journal paper accepted for publication in: IEEE Trans. Signal Processing, 2013 (copyright has been transferred to IEEE)
Andrew Harms +2 more
openaire +3 more sources
A Design of Two Sub-Stage Square-Root Nyquist Matched Filter
IEEE Access, 2018 A pair of matched filters whose cascade response satisfies the Nyquist criterion can guarantee the inter-symbol interference (ISI)-free transmission for band-limited communication systems.
Ruwu Xiao +4 more
doaj +1 more source