Improved transmit beamforming design based on ADMM for low probability of intercept of FDA-MIMO radar by Pengcheng GONG, Yuntao WU

“…Considering the low probability of intercept problem that the signal-dependent interference and the target were located in the same angle, an improved transmit beamforming design based on the alternating direction method of multipliers (ADMM) was proposed for multiple-input multiple-output with frequency diverse array radar.The transmit energy was minimized at the target under constraints of the energy at each transmitter and signal clutter-plus-noise ratio requirement.Subsequently, a cyclic algorithm was developed to tackle the non-convex design problem.Firstly, the optimal receive filter was obtained by generalized Rayleigh quotient.And then the transmit beamforming was optimized by employing auxiliary variables and ADMM to solve quadratic programming problem with fractional inequality constraint.Moreover, both the convergence and computational complexity of the proposed algorithm were discussed.Simulation results show that, compared with the semi-denite programming method, the proposed method not only attains the given antenna power, but also achieves the better mainlobe focusing performance at the target.Furthermore, the null levels at the clutter locations and the jamming directions obtained by the proposed method are -50 dB above.…”
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Development of Wrist Rehabilitation Device based on Coaxial Spherical Parallel 3RRR Mechanism by Shuaixu Ji, Yongguo Liang, Huimin Hao, Li'na Li, Jiahai Huang

“…The experimental results show that the device runs smoothly and there is no jamming in the working space.…”
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Cancellation performance of co-site antenna interference cancellation system for AM interference by Yunhao JIANG, Nan ZHAO, Cong LIU, Wenfang DING, Ziqiang XI

“…The interference cancellation performance of actual co-site antenna interference cancellation system (CICS) under amplitude modulation jamming signal was analyzed.The expressions of the steady-state weights and theirs structure characteristics of the interference cancellation system under the AM signal were given.The formulae of the interference cancellation ratio (ICR) for carrier frequency and side frequency were derived.The influence factors and the influence rules of the ICR were analyzed.The steady state weights of the interference cancellation system (ICS) were the weighting of the carrier frequency optimal weights and the edge frequency optimal weights according to the power ratio.The increase of the signal bandwidth will increase the discreteness of the carrier frequency optimal weights and the edge frequency optimal weights and lead to the decrease of the interference cancellation ratio (ICR).The decrease degree of the edge frequency ICR was greater than that of the carrier frequency ICR.To improve ICR by increasing the gain was limited.The relationship between the interference cancellation ratio limit and the equivalent transmission delay was given.The design method of the interference cancellation system to improve the ICR under the AM signal was proposed.Finally,the correctness and validity of the theoretical analysis was verified by simulation.…”
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Research on the Method of Traffic Organization and Optimization Based on Dynamic Traffic Flow Model by Shu-bin Li, Guang-min Wang, Tao Wang, Hua-ling Ren

“…The modern transportation system is becoming sluggish by traffic jams, so much so that it can harm the economic and society in our country. …”
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Predicting Tunnel Squeezing Using Multiclass Support Vector Machines by Yang Sun, Xianda Feng, Lingqiang Yang

“…It could cause shield jamming, budget overruns, and construction delays and could even lead to tunnel instability and casualties. …”
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Experimental and Optimization Study on the Sliding Force Monitoring and Early Warning System for High and Steep Slopes by Ligang Wang, ZhiGang Tao, ManChao He, Xiaocong Yang

“…Due to numerous problems such as constant resistance fluctuation and pipe jamming of the original sliding force monitoring system, leading to system failure, a series of improvements on the current monitoring systems were implemented. …”
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Evolution of Friction and Permeability in a Propped Fracture under Shear by Fengshou Zhang, Yi Fang, Derek Elsworth, Chaoyi Wang, Xiaofeng Yang

“…The increase in the number of proppant layers, from monolayer to triple layers, significantly increases the friction of the propped fracture due to the interlocking of the particles and jamming. Permeability of the propped fracture is mainly controlled by the magnitude of the normal stress, the proppant thickness, and the proppant grain size. …”
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Intelligent interference decision algorithm with prior knowledge embedded LSTM-PPO model by ZHANG Jingke, YANG Kai, LI Chao, WANG Hongyan

“…Focusing on the issues of low efficiency and effectiveness in decision-making as well as the instability of traditional reinforcement learning model-based multi-function radar (MFR) jamming decision algorithms, a prior knowledge embedded long short-term memory (LSTM) network-proximal policy optimization (PPO) model based intelligent interference decision algorithm was developed. …”
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Automatic incident detection in smart city using multiple traffic flow parameters via V2X communication by Zafar Iqbal, Majid Iqbal Khan

“…Recent research trends in intelligent transportation system are focused toward developing automatic incident detection systems to deal with on-road incidents including accidents, traffic congestion, and jamming which cause damage to precious human lives and financial losses. …”
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Artificial noise-aided robust secure information and power transmission scheme in heterogeneous networks with simultaneous wireless information and power transfer by Bo ZHANG, Kaizhi HUANG, Zhou ZHONG, Yajun CHEN

“…A heterogeneous network with simultaneous wireless information and power transfer under the stochastic channel state information (CSI) error was considered.In this network,to guarantee the security and reliability of information and energy transmission,an artificial noise (AN)-aided robust secure information and power transmission scheme was proposed.By jointly designing the downlink information beamforming and AN matrix of macrocell base station and femtocell base stations,the eavesdroppers were jammed and the energy receiving performance of system was improved simultaneously.The problem of maximizing the energy receiving performance was modeled under the constraints on the base station power,the outage probability of information transfer and confidential information eavesdropped.Due to the probabilistic and rank-one constraints,this problem was non-convex.To obtain the solution,the original problem was first transformed into an equivalent form,which was easy to process.Then,the Bernstein-type inequality and the Large-deviation inequality was utilized to transform the outage probability limits into convex linear matrix inequalities,respectively.Finally,the rank-one beamforming constraints were processed with quadratic equality constraint procedure.Simulation results show that the proposed scheme has higher energy receiving performance and feasible performance in comparison with compared schemes,which validates the effectiveness and the robustness of our proposed scheme.…”
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Rolling Element Bearing Fault Recognition Approach Based on Fuzzy Clustering Bispectrum Estimation by W.Y. Liu, J.G. Han

“…Furthermore, there exist large amounts of noise jamming and nonlinear coupling components in bearing vibration signals. …”
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The Unbiased Characteristic of Doppler Frequency in GNSS Antenna Array Processing by Yuchen Xie, Zhengrong Li, Feiqiang Chen, Huaming Chen, Feixue Wang

“…The antenna array technology, especially the spaced-time array processing (STAP), is one of the effective methods used in Global Navigation Satellite System (GNSS) receivers to refrain the power of jamming and enhance the performance of receivers in the circumstance of interference. …”
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Research on Path Planning and Trajectory Generation of Hoists for Lifting Sluice Gates by Hou Chunyao, Fang Zifan, Zhou Yi, Zhang Yu, Dong Yuanfa

“…In view of the phenomena such as the groove interference and the slot jamming, a stepwise deceleration planning method for the gate falling process was proposed. …”
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Exploring the critical factors of depot maintenance on weapon systems in South Korea by Yongdo Hur

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Object prediction and detection of ground-based weapon with an improved YOLO11 approach by Hanyul Ryu, Mingyu Park, Dae-Yeol Kim

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Automobilization in the perception of the population of a large city by M. Yu. Popov, E. N. Tuzhba

“…The progressive process of automobilization providing a comfortable life entails many negative consequences such as safety risks for the environment and people, limited space for physical movement in the city and traffic jams, the scale of which is constantly increasing. …”
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Physical layer security of full-duplex relay-assisted D2D networks under outdated CSI by Jingjie SHEN, Guangqiu LI, Yancui LUO, Huizhi LIU

“…The relay aided device to device (D2D) network can improve the spectrum efficiency of D2D users and the physical layer security of cellular user (CU) by sharing spectrum with the cellular network.To further improve their performance, transmit antenna selection can be used at the base station and the relay node of the D2D link, and full duplex technology can be used in the relay node.However, due to the feedback delay and mobility, the channel state information (CSI) used for the antenna selection of cellular link and all D2D links may be outdated.For the physical layer security and reliability in the above scenario, security model of a full duplex relay aided D2D network was proposed in the presence of active eavesdropping and outdated CSI, in which the base station and relay nodes both used transmit antenna selection.The closed-expressions for outage probability, ergodic capacity, probability of non-zero secrecy capacity, secure outage probability, asymptotic secure outage probability of relay aided D2D networks were derived.The numerical calculation and simulation results show that the more the number of base station transmit antennas and relay jamming antennas are, the better the CU security performance is.The outdated CSI will deteriorate the outage and security performance of CU.…”
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Self-assembly by anti-repellent structures for programming particles with momentum by Junghyun Bae, Jinsik Yoon, Sangmin Oh, Kibeom Kim, Hyeli Kim, Kahyun Hur, Hyesung Cho, Wook Park

“…For granular materials, however, a particle’s momentum in air leads to random collisions and the formation of disordered phases, eventually producing jammed configurations when densely packed. Therefore, unlike fluidic self-assembly, the self-assembly of dry particles typically lacks programmability based on density and ordering symmetry and has thus been limited in applications. …”
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An Optimal DoS Attack Strategy Disturbing the Distributed Economic Dispatch of Microgrid by Yihe Wang, Mingli Zhang, Kun Song, Tie Li, Na Zhang

“…Firstly, a DoS attack model is proposed, in which the DoS attacker intentionally jams the communication channel to deteriorate the performance of the microgrid. …”
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Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates by Fan Zhang, Linchong Huang, Yu Liang

“…When the shield passes through this area, the shield cutterhead may be jammed by the drainage plates, resulting in excavation surface instability, excess ground deformation, and schedule delay. …”
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