نتایج جستجو برای: phase estimation
تعداد نتایج: 849839 فیلتر نتایج به سال:
This paper describes the analysis of built-up areas using fully polarimetric interferometric SAR data at L-band. This approach uses a polarimetric interferometric segmentation to determine the number of dominant scattering mechanisms required by an interferometric phase estimation using ESPRIT method.
This is a study to investigate the parameters of the glottal source signal that are evidenced by three kinds of signals: an electroglottographic (EGG) signal, an acoustic signal, and an oral airflow signal. The glottal pulse waveform, whether intrinsically defined as glotal airflow or area, can be parameterized with attributes that vary across speakers and types of phonation. Some of these para...
Many articles dealing with individual cell lag phase determination assume that growth, when observed, comes from one cell. This assumption is not in agreement with the Poisson distribution, which uses the probability of growth in a sample to predict how many samples contain one, two, or some other number of cells. This article analyses and compares different approaches to improve the accuracy o...
We propose a depth evaluation method which utilizes a liquid crystal projector. The method is based on the phase shift technique. A sinusoidal grating pattern is used. The phase wrap problem is solved by the introduction of hierarchical pattern projection starting from one-cycle sinusoidal grating. We assume that the object have a diffusive and specular surface. Then the specular surface genera...
The technique used for this composition is a semi automatic system for speech to chant conversion. The transformation is performed using an implementation of shapeinvariant signal modifications in the phase vocoder and a recent technique for envelope estimation that is denoted as True Envelope estimation. We first describe the compositional idea and give an overview of the preprocessing steps t...
This paper proposes a new phase estimation algorithm for turbo-coded OFDM systems at low SNR. In the proposed algorithm, phase estimation process is implemented jointly with iterative decoding process. This algorithm uses extrinsic information at each decoding iteration to estimate OFDM carrier phase rotations instead of using pilots. The proposed algorithm iteratively estimates phase rotation ...
Coupled oscillators are prevalent throughout the physical world. Dynamical system formulations of weakly coupled oscillator systems have proven effective at capturing the properties of real-world systems and are compelling models of neural systems. However, these formulations usually deal with the forward problem: simulating a system from known coupling parameters. Here we provide a solution to...
Estimation of total snow mass by means of SAR interferometry is problematic, due to high sensitivity of the interferometric phase to the snow water equivalent, leading to the phase unwrapping problem. In this paper, we pursue a recently proposed technique, delta-k interferometric phase estimation, that avoids phase wrapping by lowering the sensitivity of the interferometric phase to the snow wa...
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