Results 211 to 220 of about 88,870 (264)
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[1992] Conference Record of the Twenty-Sixth Asilomar Conference on Signals, Systems & Computers, 2003
The authors present a new definition of ambiguity and illustrate its application to the study of passive localization of sources in deep ocean situations. The tool developed allows the study of the impact of all relevant parameters, including those relative to the physical medium as well as those pertinent to the instrumentation and signals involved ...
J.M. Moura, M.J. Rendas
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The authors present a new definition of ambiguity and illustrate its application to the study of passive localization of sources in deep ocean situations. The tool developed allows the study of the impact of all relevant parameters, including those relative to the physical medium as well as those pertinent to the instrumentation and signals involved ...
J.M. Moura, M.J. Rendas
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Wigner Distribution Function/Ambiguity Function Processor
SPIE Proceedings, 1988The Wigner Distribution Function and Ambiguity Function are both two-dimensional time-frequency representations of a one dimensional signal. In spite of the similarity of the functional definition, however, the information is encoded in the two functions very differently.
Alan A. Rakes +3 more
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Radar ambiguity function inL p frame
Science in China Series A: Mathematics, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Minyou Qi, M. Y. Chi
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Radar Ambiguity Functions and Group Theory
SIAM Journal on Mathematical Analysis, 1985If \(f\in L^ 2({\mathbb{R}})\) then, for \((u,v)\in {\mathbb{R}}^ 2,\) \(A(f)(u,v)=\)defines the radar ambiguity function of f, in \(L^ 2({\mathbb{R}}^ 2)\). The paper studies the properties of ambiguity functions. It is shown that the set of all ambiguity functions is closed in \(L^ 2({\mathbb{R}}^ 2)\) and that if f,g\(\in L^ 2({\mathbb{R}})\), then \
Auslander, Louis, Tolimieri, Richard
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Multi-Target Ambiguity Functions
1993Certain applications in narrow-band radar require that the windowed Fourier transform, or Weyl-Heisenberg wavelet expansion of a signal be computed. Under narrowband assumptions, and in general for real applications it is necessary that the window signal have finite second time and frequency moments, but Balian’s theorem shows that in this case the ...
Louis Auslander, Frank Geshwind
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Executive Function and Ambiguous Sentence Comprehension
American Journal of Speech-Language Pathology, 2016Purpose Sentence comprehension is a critical skill in today's literate society. Recent evidence suggests that processing and comprehending language taps cognitive as well as linguistic abilities, a finding that has critical import for clinicians who have clients with language disorders.
Sarah E, Key-DeLyria, Lori J P, Altmann
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2012
In Section 3.9.3, the point was made that a radar receiver performs a cross-correlation between the received signal and a reference of the transmitted waveform. Furthermore, the received signal may differ from the transmitted signal on account of being time delayed and Doppler shifted.
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In Section 3.9.3, the point was made that a radar receiver performs a cross-correlation between the received signal and a reference of the transmitted waveform. Furthermore, the received signal may differ from the transmitted signal on account of being time delayed and Doppler shifted.
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Wigner distribution and ambiguity function
AIP Conference Proceedings, 1980The Wigner phase space distribution and the Woodward radar ambiguity function have each been optically realized in idealized situations. The realistic performance will be assessed under simulated noise and clutter. A general cross Wigner distribution and cross ambiguity function are also compared as to their advantage in signal analysis.
H. Harold Szu, J. A. Blodgett
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2013
The radar ambiguity function is defined as the absolute value of the envelope of the output of a matched filter when the input to the filter is a Doppler-shifted version of the original signal, to which the filter was matched. Ambiguity functions are usually analyzed on a single pulse basis.
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The radar ambiguity function is defined as the absolute value of the envelope of the output of a matched filter when the input to the filter is a Doppler-shifted version of the original signal, to which the filter was matched. Ambiguity functions are usually analyzed on a single pulse basis.
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UNCERTAINTY PRINCIPLES FOR THE AMBIGUITY FUNCTION
Journal of the London Mathematical Society, 2005Let \(u, v \in L^2(R^d)\). The \textit{radar ambiguity function} associated with \(u\) and \(v\) is defined for \(x, y \in R^d\) by \[ A(u, v)(x,y) = \int_{R^d} u(t+x/2) \overline{v(t-x/2)} e^{2 i \pi \langle t, x \rangle} \, dt. \] The author extends uncertainty principles which are valid for the Fourier transform to the setting of the ambiguity ...
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