Results 271 to 280 of about 1,945,969 (313)
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Continuous coded waveforms for noise radar
2007 International Waveform Diversity and Design Conference, 2007This paper describes a new class of continuous waveforms for noise radar that can be processed using earlier developed methods for reducing pulse compression sidelobes and equalizing compressed pulses before Doppler filtering. The proposed waveforms are based on codes that modulate sub-pulses which define the bandwidth of the waveform.
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Noise analysis of digitised FMCW radar waveforms
IEE Proceedings - Radar, Sonar and Navigation, 1998A staircase phase approximation for generating a linear frequency-modulated continuous wave radar signal is considered and the use of filtering on the samples of the signal has been assumed in both transmission and reception. It is shown that an excellent spectrum of the radar signal can be obtained, provided that the appropriate value of the sample ...
M.M. Abousetta, D.C. Cooper
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Wavelets, adapted waveforms and de-noising.
Electroencephalography and clinical neurophysiology. Supplement, 1997This is a short summary of a talk given at the Frontier Science in EEG Symposium, Continuous Waveform Analysis, held on 9 October 1993 in New Orleans. We describe some new libraries of waveforms well-adapted to various numerical analysis and signal processing tasks.
R R, Coifman, M V, Wickerhauser
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Noise vs. Deterministic Waveform Radar—Possibilities and Limitations
IEEE Aerospace and Electronic Systems Magazine, 2020Classical radars use deterministic waveforms, such as linear frequency modulated pulses. Noise radars, on the other hand, use random waveforms, or waveforms that resemble random signals. The randomness of the signal provides certain advantages, such as limiting or avoiding range/velocity measurement ambiguity, or better resistance to jamming.
Mateusz Malanowski +3 more
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A compact, multichannel, and low noise arbitrary waveform generator
Review of Scientific Instruments, 2014A new type of high functionality, fast, compact, and easy programmable arbitrary waveform generator for low noise physical measurements is presented. The generator provides 7 fast differential waveform channels with a maximum bandwidth up to 200 MHz frequency.
S, Govorkov +3 more
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Fractal characteristics for binary noise radar waveform
SPIE Proceedings, 2016Noise radars have many advantages over conventional radars and receive great attentions recently. The performance of a noise radar is determined by its waveforms. Investigating characteristics of noise radar waveforms has significant value for evaluating noise radar performance.
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Fast Angle Estimation for MIMO Radar With Nonorthogonal Waveforms
IEEE Transactions on Aerospace and Electronic Systems, 2018In this letter, a fast angle-estimation method for multiple-input-multiple-output radar with nonorthogonal waveforms is devised. This method first estimates the noise-free covariance matrix by exploiting its low-rank property as well as the sparse ...
B. Liao
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Ka-band bistatic ground based noise-waveform-SAR
2008 International Radar Symposium, 2008The paper is devoted to design and testing of a reconfigurable Ka-band GB NW-SAR. Its design is based upon new synthetic aperture antennas and noise radar technology. Results of outdoor trials are presented for both SAR imaging and differential interfrometry measurements.
Konstantin A. Lukin +6 more
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Power efficiency of high dynamic range noise waveform
2016 17th International Radar Symposium (IRS), 2016Noise radars — radars that use random waveforms as sounding waveforms — are prone to what is known as a masking effect. This occurs when the correlation sidelobes of a strong target echo masks weaker echoes. In order to overcome this limitation, the sounding signals which have correlation functions with suppressed sidelobes may be used.
Janusz S. Kulpa, Anna Kurowska
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Application of arbitrary waveform generator for noise radar
SPIE Proceedings, 2011The approach, when the waveforms of different types are exploited in the same radar (waveform diversity) requires new-generation sources of initial signals. For generating of different types of waveforms in the same radar we suggest using Arbitrary Waveform Generator, that allows output any type of pre-programmed signal in real time.
Konstantin A. Lukin +3 more
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