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Micro-Doppler based target recognition and classification methods are new approach of great significance. Translation will induce translation, slope and fold of micro-Doppler which will make it difficult to extract micro-Doppler, i.e., number of parameters in Hough method will be added. To solve the problem, we derived the motion, signal as well as Doppler model of rotating scatter. A micro-Doppler...
This paper presents a case study of three different five bit multidimensional constellations using Orthogonal Chaotic Vector Shift Keying (OCVSK); a two dimensional chaotic QPSK equivalent scheme (QCSK), a spherical Triakis Icosahedral scheme and a five dimensional hypercubic constellation. The optimal duration for each signal chip within the scheme is determined, in the light of the perceived noise...
Microarray technology is a big step in bioinformatics. Hidden information within the large amounts of data provides scientists with molecular functions or essential biological meanings to study and analyze. However, these data often contain a certain portion of entities that are missing. Several methods to estimate these missing values are developed, but most of them are with disadvantages. In this...
In this paper, a robust high voltage direct-current (HVDC) wide-area time-delay damping control strategy is proposed to prevent the potential low-frequency power oscillation and enhance the power stability of HVDC/AC interconnected power systems. Firstly, the basic design concept and the related design flow are presented. Then, the general wide-area power system model with the time-delay characteristic...
The time-independent plastic and time-dependent creep deformations of Sn3.8Ag0.7Cu solder are considered in a unified framework by using a state variable approach. A new viscoplastic constitutive model that includes the kinematic hardening behavior of solder is proposed in this paper. Back stress, which is used for characterizing the kinematic hardening behavior, is selected as the state variable...
The technique of terahertz pulses generated from the photoconductive switches has been applied in the ultrafast electrical pulse metrology recently. A lumped-element theoretical model is established to describe the performance of the LT-GaAs ultrafast photoconductive switch used in the ultrafast pulse standard. Based on the model, waveforms and power spectrums of the generated terahertz pulses are...
The paper introduces a new algorithm of interpolation based on bipolar coordinates. According to the comparing point by point interpolation principle, the linear interpolation theories in polar coordinates and its algorithms are discussed in detail. The recurrence formula is deduced. The interpolation algorithm can be applied to the parallel mechanism based on polar coordinates, and its algorithm...
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