Results 11 to 20 of about 1,805,271 (277)
Sub-Nyquist spectrum sensing and learning challenge [PDF]
Frontiers of Computer Science, 2021 enabling cognitive and intelligent radios and wireless ...
Yue Gao 0001 +11 more
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Sub-Nyquist pulse Doppler MIMO radar [PDF]
2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2017 Pulse Doppler multiple input multiple output (MIMO) radar allows to simultaneously detect targets' range, azimuth and velocity. Achieving high resolution requires a large number of transmit and receive antennas, as well as high sampling rates leading to a torrent of samples.
Cohen, David +3 more
core +4 more sources
High-speed, sub-Nyquist interferometry
Optics Express, 2011 The velocity measurement limit in dynamic interferometry is vNyq, the velocity at which the interferogram is sampled at the Nyquist limit. We show that vNyq can be exceeded by assuming continuity of the surface motion and unwrapping the velocity modulo 2vNyq.
Tao, Wu +2 more
openaire +3 more sources
Compressive Detection Using Sub-Nyquist Radars for Sparse Signals
International Journal of Antennas and Propagation, 2016 This paper investigates the compression detection problem using sub-Nyquist radars, which is well suited to the scenario of high bandwidths in real-time processing because it would significantly reduce the computational burden and save power consumption ...
Ying Sun +5 more
doaj +2 more sources
Detección cooperativa de usuarios primarios en entornos multibanda basado en muestreo sub-Nyquist uniforme en el dominio disperso [PDF]
Dyna, 2017 En este artículo se propone un nuevo algoritmo cooperativo de detección de usuarios primarios (PU) en entornos multibanda (Sensado de Espectro de Banda Ancha - WBSS) basado en muestreo Sub-Nyquist y compleción de matrices. Así mismo se propone una matriz
Evelio Astaiza Hoyos +2 more
doaj +2 more sources
Sub-Nyquist SAR via Quadrature Compressive Sampling with Independent Measurements
Remote Sensing, 2019 This paper presents an efficient sampling system for the acquisition of synthetic aperture radar (SAR) data at sub-Nyquist rate. The system adopts a quadrature compressive sampling architecture, which uses modulation, filtering, sampling and digital ...
Huizhang Yang +3 more
doaj +2 more sources
Testbed for Sub-Nyquist Wideband Spectrum Monitoring
Revista Ingenierías Universidad de Medellín, 2019 Radioelectric spectrum management is a concern for today’s world, mainly due to the misuse that has been given to this resource through the years, especially on the UHF band.
Juan Felipe Medina Lee +3 more
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Sub-Nyquist computational ghost imaging with deep learning
Optics Express, 2020 We propose a deep learning computational ghost imaging (CGI) scheme to achieve sub-Nyquist and high-quality image reconstruction. Unlike the second-order-correlation CGI and compressive-sensing CGI, which use lots of illumination patterns and a one-dimensional (1-D) light intensity sequence (LIS) for image reconstruction, a deep neural network (DAttNet)
Heng Wu +8 more
openaire +3 more sources
Sub-Nyquist sampling of short pulses [PDF]
2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011 28 ...
Ewa Matusiak, Yonina C. Eldar
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A hardware prototype of sub‐Nyquist radar with unknown pulses
Electronics Letters, 2021 In a conventional radar system, the hardware cost increases with the sampling rate of the receiver. Sub‐Nyquist radar systems operate at lower sampling rates and hence reduce the hardware cost and complexity. A sub‐Nyquist radar system uses the knowledge
Satish Mulleti +3 more
doaj +1 more source