In this paper, a novel triple-layer band-pass Frequency selective surface (FSS) with wide passband and low insertion loss is proposed. The proposed FSS is composed of three FSS layers and two dielectric substrates whi...
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In this article, the problem of three-dimensional multitarget tracking (MTT) by multi-spacecraft equipped with passive sensors under limited field-of-view (FoV) is considered. A distributed communication network is fo...
In this article, the problem of three-dimensional multitarget tracking (MTT) by multi-spacecraft equipped with passive sensors under limited field-of-view (FoV) is considered. A distributed communication network is formed between sensors, each local node runs a Gaussian mixture probability hypothesis density filter to extract the state of targets. Based on arithmetic average fusion rule, a bearing-only FoV function that incorporates the position, attitude, and angular detection range of the sensors is proposed and applied to adjust the fusion weights accordingly. The region of bearing-only FoV is hard to calculate under inertial Cartesian coordinate. Subsequently, the cubature points sampling is employed to compute the integral in the FoV function. To obtain trajectory information, labeled Gaussian component strategy is adopted in local nodes. Then, a sequential label matching method based on Cauchy-Schwarz divergence is proposed to solve the problem of label inconsistency. To verify the proposed algorithm, a real-time hardware-in-the-loop simulation system that restores the MTT scenario in space environment is established. Simulation results demonstrate that the proposed method can significantly improve the trajectory tracking duration, while ensuring the estimation accuracy and has high computational efficiency.
Here a dual-polarisation printed dipole antenna for spherical near-field measurements is proposed. The printed dipole employs double-layered structure to obtain low cross-polarisation and uses irregular patch to get w...
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In this study, the near-field beam focusing algorithm of reconfigurable reflect array for security imaging application is proposed. The proposed near-field focusing algorithm is based on classic array method, which is...
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In order to improve the tracking and stabilization performance, a control method combining disturbance observer and adaptive feed-forward control using parameterization is proposed for seeker stabilized platforms. The...
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An Ultra Wideband frequency selective surface (FSS) with forth-order bandpass responses operating at Ka band is proposed in the paper. To improve the performance of the FSS especially in angular stability, the couplin...
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In this paper, the radar signal is optimized based on the pulse compression repair (PCR) algorithm, which mainly reduces the computational amount to makes it more advantageous to achieve. The main idea is to implement...
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The phase-switched screen (PSS) has been proved effective in the application of shielding a target or deceiving the radar system when the modulation frequency of it is set greater or smaller than the signal bandwidth....
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Aiming at the four-station networked TDOA (Time Difference of Arrival) localization system, a direct location method based on electronic elevation map search is proposed, the Geometric Dilution Precision (GDOP) is der...
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There is a risk of information leakage in the process of wireless communication. The introduction of key generation in the physical layer can effectively improve the security of wireless communication. This paper prop...
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