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This paper adopts the visibility graph to analyze the short time series of fractal Brownian motion (fBm), and examines this method in estimating Hurst exponents. The maximum likelihood estimation is introduced to estimate the power-law index and the statistics to judge the performance of the estimation. In the result, we found that the first minimum of the Kuiper statistic can provide an optimal estimation...
The Parkinson's disease (PD) state can be distinguished by relay reliability of thalamic cell (TC). Among numerous parameters of single-compartment conductance-based TC model, only two of them mainly modulate the relay reliability of TC. In order to explore the relationship between the two parameters and the firing relay, a parameter estimation method based on particle swarm optimization (PSO) algorithm...
The paper proposes an efficient mathematical description for the range model of a moving target in synthetic aperture radar (SAR) geometry, without any limitations on the model order. The target may have high-order motions such as accelerations, jerks or micro-motions, and any-order one is decomposed in terms of azimuthal and radial directions. The relationship between target motion component, phase...
A novel algorithm is proposed for detecting and estimating sinusoidal frequency-modulated (SFM) signals based on the pulse-repetition-interval (PRI) transform which is originally used for estimating PRIs of pulse trains. Our algorithm utilizes the resemblance between the spectrum of a SFM signal and a pulse train, and applies the PRI transform to this spectrum. It can detect SFM signals under moderate...
This paper addresses the problem of simultaneous estimation of the topological structure and unknown parameters of uncertain general complex networks from noisy time series. Usually the complex networks consist of known node models with some unknown parameters and uncertain topological structure. At the same time, only partial states with heavy noise can be observed in real-world complex networks...
Due to good balance among spectrum efficiency, ambiguity function and peak-to-mean envelope power ratio (PMEPR), wideband Multi-Carrier Phase-Coded (MCPC) radar has caught much attention from researchers recently. Based on separation of sub carriers from multi-frequency structure, this paper provides velocity estimation method for such radar signal. After detecting the peek Doppler spectrum of each...
3S (Remote Sensing System, Global Position System, and Geographical Information System) provides an entirely new kind of data source for estimating OD matrices. In this paper, we go over our recent works in this field and address the following points: how to pre-process the 3S data collected? How to apply the 3S data for estimating OD matrices without surveys? How to test the results? Finally, the...
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