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The vehicle routing problem with time windows (VRPTW) is investigated in this paper. The constraints of vehicle's capacity and the time windows are considered. Based on the principles of the intelligent water drops, a fast and efficient intelligent water drops algorithm for solving the VRPTW is designed. Simulation results show that we can find the global optimal solution of VRPTW with high probability...
A noise-robust classification method is proposed to discriminate the moving vehicle and walking human via the time-frequency feature extracted from the micro-Doppler signature of low resolution radar. Since the signal-to-noise ratio (SNR) directly relates to the distance between the target and radar for a given noise power and radar power, the denoising preprocessing is usually required to increase...
For robust classification of moving wheeled and tracked vehicles using returned micro-Doppler signals within short dwell time, the influence of receiver white noise and low spectrum resolution are encountered. In this paper, noise reduction and super-resolution are realized simultaneously via a redundant dictionary based l1 -norm optimization method. Experiments based on the measured data are presented,...
This paper utilizes empirical mode decomposition to analyze the micro-motion of moving vehicles. Due to the adaptive function of empirical mode decomposition (EMD), different micro-motion of moving vehicles can be extracted by this decomposition technique. The analysis results based on simulated data and measured data show that special structures of different vehicles can be well depicted by EMD.
Micro-Doppler information contained in the returned echo reflects the special structure of moving vehicles and can be utilized to discriminate wheeled vehicle and tracked vehicle. In this paper, generalized matched filter is employed to suppress clutter and a preprocessing is used to eliminate the influence of bulk velocity for Doppler spectrum firstly. Then features which depict the distinction between...
In this paper, an integrated vehicle dynamics control system is designed to improve vehicle handling and stability by coordinating control of Active Front Steering (AFS) and Electronic Stability Program (ESP). The integrated control system includes a coordinated controller in upper layer and two subsystem controllers in lower layer. The control algorithm based on β - β̇ phase plane is used to identify...
The paper introduces the basic principle, composition and technologic application of geomagnetic aided inertial navigation system (GAINS). Two frameworks of GAINS are commonly used, one of which is based on matching algorithm and the other is based on stochastic linear technology. Although they work on some different principles, there are many commonalities, such as data grid interpolation generating...
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