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Outdoor localization is of great importance for driving navigation, attracting many research efforts in past decades. Prevailing GPS achieves meter-level localization accuracy under general outdoor conditions. Yet, GPS service performs poorly in urban canyons where skyscrapers blocks GPS signals and drain mobile phone battery quickly within few hours. In this work, we exploit common city facilities,...
In many fields of MRI (Magnetic Resonance Imaging), especially in DMRI (Dynamic MRI) domain, long acquisition time often limits its clinical applications. The new online MRI technique can obviously accelerate the imaging time for DMRI based on under-sampling acquisition and sparsity performance between neighbor frames. The data acquisition of previous online MRI schemes was based on the Cartesian...
Starting from 3rd Generation Partnership Projects (3GPP), heterogeneous network (HetNet) is widely deployed to solve the weak-coverage problems in hot spots, architectural barriers spots and large inner buildings. HetNet consists of macro base station (MBS) with strong transmission capacity and low power Pico base station (PBS) which are set up in these weak-coverage areas and provide greater bandwidth...
This paper addresses a collision avoidance problem in a multi-robot system. Each robot has a set of possible trajectories, each trajectory fulfilling its individual task. The trajectories consist of sequences of regions to be followed, and the time for moving inside each region is known. The problem is to avoid inter-robot collisions by imposing initial time delays for each trajectory. Two solutions...
This paper studies output synchronization problem for a heterogenous network of discrete-time introspective right-invertible agents. We propose a decentralized control scheme to solve the output synchronization problem for a set of communication topologies. Moreover, if the synchronization trajectories are assumed to be bounded, a universal controller can be constructed for all communication topologies...
In this paper we study control under input saturation and disturbances of neutrally stable and critically unstable linear systems. It is shown that a feedback controller can be designed so that the closed-loop states remain bounded for disturbances which belong to two different classes depending on the specific system structure and the equilibrium is globally asymptotically stable.
We study in this paper the control of discrete-time neutrally stable and critically unstable linear systems subject to input saturation and disturbances. It is shown that a feedback controller can be designed so that the closed-loop states remain bounded for two classes of disturbances and the equilibrium is globally asymptotically stable. This paper is a companion of [7].
In this paper, we consider the problems of semiglobal and global internal stabilization along with disturbance rejection for the case of so-called matched uncertainties and disturbances for linear systems subject to actuator saturation. We develop here low-and-high gain and scheduled low-and-high gain state as well as measurement feedback design methodologies to solve the posed stabilization and disturbance...
Using a classical ensemble method, we predict that electron-electron correlation before first ionization leads to measurable effects in both nonsequential and sequential double ionization regimes. Laser field ellipticity is key to observe these effects.
This paper introduces the use of chaotic Duffing oscillators to ballistocardiograph system for detection of weak signal. A ballistocardiograph (BCG) is an instrument that records the motions of the body imparted to it by the heart beat. It has been found that digital filters are not suitable for processing the BCG signals in noise. So in this paper, we propose a chaotic oscillators algorithm to detect...
Ballistocardiogram (BCG) is a new, noninvasive technique used to record the movement of the body synchronous with the heartbeat due to left ventricular pump activity. However, BCG signal is so weak and easy to be jammed. In this paper, we achieved it through the measure system which is made by our BCG laboratory. Then, attempt to detect useful information from noises by chaotic oscillators. Experimental...
The body of a motion controller comprises of command parser, trajectory planner, position loop and real-time interpolator, pulse generator, and pulse distributor.This paper illustrated design method of a general motion controller using digital pulse interface style. MCU make complex motion plans, the programmable digital hardware generates high frequency pulse trains. An extended DDA circuit is used...
The ultimate goal of our research is to develop a new speech dynamic feature that is able to capture the effects of fine-grained acoustic location on speech recognition behavior. As part of this work we are investigating recurrence quality analysis (RQA) and cross recurrence plot (CRP) approach. In the experiments reported here, we analyzed the Chinese vowel and vocabulary using CRP. Experimental...
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