منابع مشابه
SUMMeR: Sub-Nyquist MIMO Radar
Multiple input multiple output (MIMO) radar exhibits several advantages with respect to traditional radar array systems in terms of flexibility and performance. However, MIMO radar poses new challenges for both hardware design and digital processing. In particular, achieving high azimuth resolution requires a large number of transmit and receive antennas. In addition, the digital processing is ...
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We develop sub-Nyquist sampling systems for analog signals comprised of several, possibly overlapping, finite duration pulses with unknown shapes and time positions. Efficient sampling schemes when either the pulse shape or the locations of the pulses are known have been previously developed. To the best of our knowledge, stable and low-rate sampling strategies for continuous signals that are s...
متن کاملA Survey on Sub-Nyquist Sampling
This paper gives a survey of sub-Nyquist sampling. Sub-Nyquist sampking is of great interest in the environment that sampling by Nyquist rate is infeasible due to either hardware or software limitation. The survey summarizes a number of recent important researches on sub-Nyquist sampling (compressive sensing). In addition to the basics of sub-Nyquist sampleing, including the fundamental theory ...
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Spectrum sensing refers to the task of identifying the frequency support of a given input signal. Standard radio-frequency (RF) lab equipment can provide this functionality. An example is a spectrum analyzer (e.g., HP-8563E) which sweeps the center frequency of an analog bandpass filter and draws the in-band signal energy. The frequency support then consists of those spectrum intervals in which...
متن کاملSub-Nyquist artefacts and sampling moiré effects
Sampling moiré effects are well known in signal processing. They occur when a continuous periodic signal g(x) is sampled using a sampling frequency f s that does not respect the Nyquist condition, and the signal-frequency f folds over and gives a new, false low frequency in the sampled signal. However, some visible beating artefacts may also occur in the sampled signal when g(x) is sampled usin...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2016
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.55.001324