Journal ArticleDOI
Survey of excitation signals for FFT based signal analyzers
Reads0
Chats0
TLDR
The properties of ten different excitation signals are studied to analyze their suitability as excitation signal for fast Fourier transform (FFT)-based signal and network analyzers and the flexibility to create a customized amplitude spectrum is investigated.Abstract:
The properties of ten different excitation signals are studied to analyze their suitability as excitation signals for fast Fourier transform (FFT)-based signal and network analyzers. Their influence on the measurement time, accuracy, and sensitivity to nonlinear distortions is described. The flexibility to create a customized amplitude spectrum is investigated. With this information it becomes possible to select the best excitation signal for many applications. >read more
Citations
More filters
Patent
Method and device for broadband analysis of systems and substances
TL;DR: In this article, a method and device for high speed broadband testing of systems and substances using a binary, spectrally sparse sequence (SSS) as a periodic excitation waveform is presented.
Journal ArticleDOI
On the Advantages of Periodic Excitation in System Identification
TL;DR: In this article, the influence on the uncertainty of the estimates, the model validation problem, initial state estimate and the frequency range of the measurements is analyzed and illustrated, and it is shown that periodic excitations offer significant advantages in system identification compared to noise excitation.
Journal ArticleDOI
Design of tri-level excitation signals for broadband bioimpedance spectroscopy.
TL;DR: This paper proposes a synthesis method to design a series of tri-level MFM signals which contain only three values (+1, 0, -1), and has majority energy distributed on its (2(n)th primary harmonics), which has both high energy efficiency and a low crest factor.
Dissertation
Identification of small-signal dq impedances of power electronics converters via single-phase wide-bandwidth injection
TL;DR: In this paper, a small-signal identification algorithm for switching power converter, which is based on FFT, is presented and explained, and a decoupling control is proposed to regulate ac injection voltage, providing robust and reliable strategy for series voltage injection.
Journal ArticleDOI
Wavelet-Based Frequency Response Function: Comparative Study of Input Excitation
TL;DR: In this paper, a time-variant frequency response function based on the continuous wavelet transform (SWT) was used for the analysis of time-varying broadband input excitations.
References
More filters
Journal ArticleDOI
On the use of windows for harmonic analysis with the discrete Fourier transform
TL;DR: A comprehensive catalog of data windows along with their significant performance parameters from which the different windows can be compared is included, and an example demonstrates the use and value of windows to resolve closely spaced harmonic signals characterized by large differences in amplitude.
The fast Fourier Transform
TL;DR: A computer algorithm that computes the discrete Fourier transform much faster than other algorithms, is explained and examples and detailed procedures are provided to assist the reader in learning how to use the algorithm.
Journal ArticleDOI
Synthesis of low-peak-factor signals and binary sequences with low autocorrelation (Corresp.)
TL;DR: In this correspondence, a formula for the phase angles is derived that yields generally low peak factors, often comparable to that of a sinusoidal signal of equal power.
Journal ArticleDOI
Peak factor minimization using a time-frequency domain swapping algorithm
TL;DR: In this paper, an algorithm is presented to minimize the peaks in the time domain of bandlimited Fourier signals, which has the ability to compress signals effectively without disturbing their spectral magnitudes.