This paper is focused on the Seismic Signal characteristics of wheel and track vehicles. The effect of vehicle speed of these two vehicles on the Seismic Signal was studied through experimental and theorical methods. ...
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We propose a fast-printable and function-switchable metamaterial based on laser-induced graphene for terahertz (THz)wave modulation in the reflection mode. The design can modulate the linear polarization of the incomi...
We propose a fast-printable and function-switchable metamaterial based on laser-induced graphene for terahertz (THz)wave modulation in the reflection mode. The design can modulate the linear polarization of the incoming wave fronts to its cross-polarization from 0.27 to 0.41 THz and linear polarization to circular polarization from 0.48 to 0.62 THz. The function of the device can also be switched from a polarization converter to an absorber by bending it with an angle of 57°. Experimental results showed a good agreement with those of the simulation. The proposed polarization converter may find its application in THz polarization control systems and sensing.
The precise detection of infrared (IR) tiny objects against complex backgrounds is of great significance in the field of aircraft imaging guidance. However, due to the extremely small target features, low brightness, ...
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Model Set Adaptation(MSA)plays a key role in the Variable Structure Multi-Model tracking approach(VSMM).In this paper,the Error-Ambiguity Decomposition(EAD)principle is adopted to derive the EAD-MSA criterion that is ...
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Model Set Adaptation(MSA)plays a key role in the Variable Structure Multi-Model tracking approach(VSMM).In this paper,the Error-Ambiguity Decomposition(EAD)principle is adopted to derive the EAD-MSA criterion that is optimal in the sense of minimizing the square error between the estimate and the ***,the EAD Variable Structure first-order General Pseudo Bayesian(EAD-VSGPB1)algorithm and the EAD Variable Structure Interacting Multiple Model(EAD-VSIMM)algorithm are *** proposed algorithms are tested in two groups of maneuvering target tracking scenarios under different modes and observation error *** simulation results demonstrate the effectiveness of the EAD-VSMM approach and show that,compared to some existing multi-model algorithms,the proposed EAD-VSMM algorithms achieve more robust and accurate tracking results.
RF integration is widely needed by modern shipborne radars. A novel dual-band FSS radome with mathrm{S}+mathrm{X} passband is designed and simulated with angular stability. The passband are 1.55~3.4GHz and 9.2~9.7GHz....
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Catering the continuous development of intelligent technology and the wide application prospects of unmanned aerial vehicles (UAVs), the target tracking technology will be applied in future combat. In order to deal wi...
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Torsion balance system as a high precision important ultra-small force measurement tool usually requires ultra-high-resolution deviation measurement of the torsion angle. Currently, autocollimators are used for the to...
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With the widespread use of unmanned aerial vehicles (UAVs) and computer vision, much attention has been devoted to aerial tracking. Previous tracking methods were mostly implemented in clean and well-lit environments,...
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In this paper, by employing the PIN diodes to the ultra-thin Artificial Magnetic Conductor (AMC), a new kind of reconfigurable multi-band phase switched screen (PSS) was proposed. By control the switch sequences betwe...
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This paper presents an available scheme based on update lifting morphological wavelet (ULMW) and Non-negative matrix factorization (NMF) for wheeled and tracked vehicles classification. The ULWM algorithm which utiliz...
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