time and frequency
Time and frequency domain statistical methods for high-frequency time series
... and time scale ...higher frequency sampling in space and time are required, to better understand the EpCO2 dynamics, due to the spatio-temporal heterogeneity in the catchment characteristics and ...
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Time and Frequency System
... The Frequency Measurement is a software option that provides the ability to precisely measure the frequency of an externally applied 1, 5, or 10 MHz ...averaging time. It supports a periodic, zero ...
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Fundamentals of Time and Frequency
... the frequency counter, and f nominal is the frequency labeled on the oscillator’s nameplate, or specified output ...frequency. Frequency offset measurements in the time domain involve a ...
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Frequency Estimation Using Time-Frequency Based Methods
... the time-frequency plane similar to the one shown in Figure 4, as well as shearing it along the time and frequency ...the time-frequency cells presents new opportunities of ...
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NIST Time and Frequency Services
... accurate time, but they automatically adjust for Daylight Saving Time, leap seconds, and leap ...synchronizations, time is kept using the quartz ...maintain frequency to within a few parts per ...
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TIME AND FREQUENCY BROADCAST WITH DCF77
... disseminated time signals and standard frequency by means of the low-frequency transmitter ...legal time for Germany has been broadcast using coded time information by way of amplitude ...
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Joint Time-Frequency Scattering
... Joint Time-Frequency Scattering Joakim And´en, Vincent Lostanlen, and St´ephane Mallat Abstract—In time series classification and regression, signals are typically mapped into some intermediate ...
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Multivariate time-frequency analysis
... modelling time varying signals, the concept of the modulated oscillation was introduced in [1]; where both the amplitude and frequency of such oscillations vary as a function of time, and are ...
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Recursive Time-Frequency Reassignment
... efficiency, time-frequency resolution and stability of the ...to time- frequency resolution ...as time-frequency reassignment has shown to yield TFRs with superior ...
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CSMA/CA in Time and Frequency Domains
... IV. A NALYSIS AND C ONFIGURATION In this section, we first introduce a Markov-chain model to study the spectral self-organization of TF-CSMA/CA. The main purpose of this analysis is to show that a simple ...
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Measuring comovement in the time-frequency space
... the time domain through the well-known correlation coefficient while the evolving properties are investigated either through a rolling window or by considering non-overlapping ...the frequency level, such a ...
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Time and frequency distribution using satellites
... This would complicate the design of the receiver, and might also make it more difficult to protect the frequency allocation from interference by other ground-based uses. The height of the ionosphere is about ...
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Robust Blind Frequency and Transition Time Estimation for Frequency Hopping Systems
... A blind estimation scheme is presented for estimating frequency and transition time without using reference signals. The scheme is robust in the sense that it can avoid the unbalanced sampling block problem ...
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The Role of GPS in Precise Time and Frequency Dissemination
... Accuracies of 50-100 nanoseconds are acceptable for most purposes such as earthquake monitoring, mineral research, and general navigation. To benefit from this smoothing, an atomic clock is needed as a reference. ...
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A Time Frequency Approach for Discrimination of Heart Murmurs
... as time-frequency (TF) analysis methods [2]. Short-time Fourier transform (STFT) is one of the existing tech- niques that tackles the nonstationarity of the PCG signal by segmenting it into ...
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Time errors in a frequency controller
... ramping time errors in the electrical generation network that started appearing after the commissioning of the Frequency Keeping Controller on the High Voltage Direct Current link between the North and ...
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A general theory on frequency and time–frequency analysis of irregularly sampled time series based on projection methods – Part 2: Extension to time–frequency analysis
... Here we provide such a framework. To this end, we define the scalogram as the continuous-wavelet-transform equiva- lent of the extended Lomb–Scargle periodogram defined in Part 1 of this study (Lenoir and Crucifix, ...
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Sweep frequency response analysis using time frequency distribution
... “SWEEP FREQUENCY RESPONSE ANALYSIS (SFRA) USING TIME FREQUENCY DISTRIBUTION (TFD)” is the result of my own research except as cited in the ...
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A general theory on frequency and time–frequency analysis of irregularly sampled time series based on projection methods – Part 1: Frequency analysis
... Received: 16 June 2017 – Discussion started: 4 July 2017 Revised: 4 December 2017 – Accepted: 6 December 2017 – Published: 5 March 2018 Abstract. We develop a general framework for the frequency analysis of ...
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Time-frequency processing - Spectral properties
... for time-frequency representations computed by fil- terbank analysis in the limit when L T f ...applying frequency-domain smoothing to the frequency response of the filter, tapered analysis ...
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