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Chinese Journal of Aeronautics 2024年第11期37卷 398-419页

作者： Xiaoyang LI Teng WANG Dinghan WANG Hairuo ZHANG Ying ZHOU Deyun ZHOU School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China

To address the guided search task of airborne phased array radar in the scenarios of large airspace with widespread distribution of cluster targets in Beyond Visual Range(BVR)air combat,a hierarchical strategy framework based on deep reinforcement learning is proposed to guide different stages of search ***,an airspace set-covering model and a radar parameter optimization model for the guided search task of cluster targets are ***,the hierarchical strategy framework including upper-level and lower-level strategies is constructed based on the above ***,the happo-rgs algorithm is proposed for feature extraction from Markov continuous observation sequences,to enhance the training effectiveness and improve the algorithm convergence *** results show that the trained agent can make precise autonomous decisions rapidly based on airspace-target covering situation and target guidance information which significantly improves the radar search performance in the forementioned scenarios compared to traditional algorithms.

关键词： Beyond-visual-range air combat phased array radar radar search resource optimization Reinforcement learning Multi-head attention mechanism

Variable scheduling interval task scheduling for phased array radar

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Journal of Systems Engineering and Electronics 2018年第5期29卷 937-946页

作者： ZHANG Haowei XIE Junwei ZHANG Zhaojian SHAO Lei CHEN Tangjun Air and Missile Defense College Air Force Engineering UniversityXi’an 710051China Air Force Early Warning Academy Wuhan 410039China Unit 94921 of the PLA Jinjiang 362200China

A scheduling algorithm is presented aiming at the task scheduling problem in the phased array radar. Rather than assuming the scheduling interval(SI) time, which is the update interval of the radar invoking the scheduling algorithm, to be a fixed value,it is modeled as a fuzzy set to improve the scheduling *** scheduling algorithm exploits the fuzzy set model in order to intelligently adjust the SI time. The idle time in other SIs is provided for SIs which will be overload. Thereby more request tasks can be accommodated. The simulation results show that the proposed algorithm improves the successful scheduling ratio by 16%,the threat ratio of execution by 16% and the time utilization ratio by 15% compared with the highest task mode priority first(HPF)algorithm.

关键词： phased array radar task scheduling variable scheduling interval(SI) fuzzy set

Novel cued search strategy based on information gain for phased array radar

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Journal of Systems Engineering and Electronics 2008年第2期19卷 292-297页

作者： Lu Jianbin Hu Weidong Xiao Hui Yu Wenxian ATR Key Lab National Univ. of Defense Technology Changsha 410073 P. R. China

A search strategy based on the maximal information gain principle is presented for the cued search of phased array radars. First, the method for the determination of the cued search region, arrangement of beam positions, and the calculation of the prior probability distribution of each beam position is discussed. And then, two search algorithms based on information gain are proposed using Shannon entropy and Kullback-Leibler entropy, respectively. With the proposed strategy, the information gain of each beam position is predicted before the radar detection, and the observation is made in the beam position with the maximal information gain. Compared with the conventional method of sequential search and confirm search, simulation results show that the proposed search strategy can distinctly improve the search performance and save radar time resources with the same given detection probability.

关键词： phased array radar search strategy cued search beam position information gain.

Real-Time Dwell Scheduling Based on a Unified Pulse Interleaving Framework for phased array radar

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Tsinghua Science and Technology 2024年第5期29卷 1540-1553页

作者： Ting Cheng Luqing Liu Zhongzhu Li Siyu Heng School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 614000China

Dwell scheduling is a key for phased array radar to realize multi-function and it becomes especially challenging in complex tactical *** this manuscript,a real-time radar dwell scheduling algorithm based on a unified pulse interleaving framework is proposed.A unified pulse interleaving framework that can realize pulse interleaving analysis for phased array radars with different receiving modes is put forward,which greatly improves the time utilization of the *** on above framework,a real-time two-stage approach is proposed to solve the optimization problem of dwell *** importance and urgency criteria are guaranteed by the first pre-schedule stage,and the desired execution time criterion is improved at the second stage with the modified particle swarm optimization(PSO).Simulation results demonstrate that the proposed algorithm has better comprehensive scheduling performance than up-to-date algorithms that consider the pulse interleaving technique for both single beam and multiple beams receiving ***,the proposed algorithm can realize dwell scheduling in realtime.

关键词： phased array radar dwell scheduling receiving mode pulse interleaving particle swarm optimization

Design and Realization of phased array radar Optical Fiber Transmission System

维普期刊数据库评论

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维普期刊数据库

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Journal of Beijing Institute of Technology 2007年第1期16卷 87-92页

作者：胡善清刘峰龙腾 School of Information Science and Technology Beijing Institute of Technology Beijing 100081China

One optical fiber transmission system is designed. The modularization optical fiber transmission adapters were utilized in the system, so the system structure could be flexibly sealable. The sub-array adapter and signal processor adapter were designed and realized utilizing the new field programmable gate array （FP- GA） which could drive the optical transceiver. The transmission agreement was designed based on the data stream. In order to solve the signal synchronization problem of the optical fiber transmitted phased array radar, a method named synchronous clock was designed. The fiber transmission error code rate of the system was zero with an experimental transmission velocity of 800 Mbit/s. The phased array radar system has detected the airplane target, thus validated the feasibility of the design method.

关键词： phased array radar optical fiber transmission adapter synchronization

Improving the Nowcasting of Strong Convection by Assimilating Both Wind and Reflectivity Observations of phased array radar:A Case Study

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Journal of Meteorological Research 2022年第1期36卷 61-78页

作者： Xiaoxia LIN Yerong FENG Daosheng XU Yuntao JIAN Fei HUANG Jincan HUANG Guangzhou Institute of Tropical and Marine Meteorology/Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction Chinese Meteorological AdminstrationGuangzhou 510641 Guy Carpenter Asia-Pacific Climate Impact Centre School of Energy and EnvironmentCity University of Hong KongHong Kong 999077 Zhuhai Meteorological Bureau Zhuhai 519000 Foshan Meteorological Service of Guangdong Province Foshan 528200

With the advent of the phased array radar(PAR)technology,it is possible to capture the development and evolution of convective systems in a much shorter time interval and with higher spatial resolution than via traditional Doppler *** on the assimilation of PAR observations in numerical weather prediction models is still in its infancy in *** this paper,the impact of assimilating PAR data on model forecasts was investigated by a case study of a local heavy rainfall event that occurred over Foshan city of Guangdong Province on 26 August 2020,via a series of sensitivity *** the retrieved three-dimensional wind and hydrometeor fields were assimilated through the nudging method with the Tropical Regional Assimilation Model for South China Sea_Rapid Update Cycle_1km(TRAMS_RUC_1km).The temperature and moisture fields were also adjusted *** results show that significant improvements are made in the experiments with latent heat nudging and adjustment of the water vapor field,which implies the importance of thermodynamic balance in the initialization of the convective system and highlights the need to assimilate PAR radar observations in a continuous manner to maximize the impact of the *** tests also indicate that the relaxation time should be less than 5 *** general,for this case,the assimilation of PAR data can significantly improve the nowcasting skill of the regional heavy *** study is the first step towards operational PAR data assimilation in numerical weather prediction in southern China.

关键词： phased array radar data assimilation initialization nudging

ALGORITHMS FOR TRACKING MANEUVERING TARGET WITH phased array radar

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Chinese Journal of Aeronautics 1998年第4期11卷 42-53页

作者：杨晨阳毛士艺李少洪 Faculty 203 Department of Electronic Engineering Beijing Univ. Aero. and Astronaut. Beijing 100083 China

Several typical algorithms for tracking maneuvering target with phased array radar are studied in this paper. The constant gain filter with multiple models is analyzed. A typical method for adaptively controlling the sampling interval is modified. The performance of the single model and multiple model estimator with uniform and variable sampling interval are evaluated and compared. It is shown by the simulation results that it is necessary to apply the adaptive sampling policy based on the multiple model method when the maneuvering targets are tracked by the phased array radar since saving radar resources is more important. The adaptive algorithms of variable sampling interval are better than the algorithms of variable model. The adaptive policy to determine the sampling interval based on multiple model are superior than those based on the single model filter, because IMM estimator can adapt to the maneuver more quickly and the prediction covariance of IMM is the more sensitive and more reliable index than residual to determine the sampling interval. With IMM based method, lower sampling interval is required for a certain accuracy.

关键词： phased array radar maneuvering target tracking multiple model estimator adaptive sampling policy

A scheduling method based on a hybrid genetic particle swarm algorithm for multifunction phased array radar

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Frontiers of Information Technology & Electronic Engineering 2017年第11期18卷 1806-1816页

作者： Hao-wei ZHANG Jun-wei XIE Wen-long LU Chuan SHENG Bin-feng ZONG Air and Missile Defense College Air Force Engineering University Xi'an 710051 China Troop 94225 Rizhao 276000 China Troop 94710 Wuxi 214000 China

A hybrid optimization approach combining a particle swarm algorithm, a genetic algorithm, and a heuristic interleaving algorithm is proposed for scheduling tasks in the multifunction phased array radar. By optimizing parameters using chaos theory, designing the dynamic inertia weight for the particle swarm algorithm as well as introducing crossover operation and mutation operation of the genetic algorithm, both the efficiency and exploration ability of the hybrid algorithm are improved. Under the frame of the intelligence algorithm, the heuristic interleaving scheduling algorithm is presented to further use the time resource of the task waiting duration. A large-scale simulation demonstrates that the proposed algorithm is more robust and efficient than existing algorithms.

关键词： phased array radar Scheduling Particle swarm algorithm Genetic algorithm Pulse interleave

Nonlinear Analysis of Period Pulse Load for phased array radar

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Nonlinear Analysis of Period Pulse Load for Phased Array Rad...

Cued search algorithm with uncertain detection performance for phased array radars

第三十九届中国控制会议

作者： Yong Sun Song Lin China Electronics Technology Group Corporation No.14 Research Institute

The load characteristic of phased array radar is nonlinear period pulse load with various *** stability of power supply system is the key condition to ensure the functions of *** analyzing the characteristics of array load,the nonlinear model of the period pulse load is established by the state space segmentation *** to the working characteristics of period pulse load,the analytical voltage expressions are *** analytical expressions of the average current and power of the pulse load are derived by the period average *** order to find the theoretical law between the characteristics and working mode of the nonlinear pulse load,the theoretical results are proposed based on the analytical solutions of the differential *** variation laws are obtained on the voltage extremum,voltage drop,current and ***,the results are verified by the *** theoretical results presented in this paper constitute the theoretical basis for the power supply system design of phased array *** results provide guidance for the optimization design of nonlinear power supply system of large-scale phased array radar.

关键词： phased array radar Pulse Load State Space Segmentation Period Average

来源： cnki会议评论

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Journal of Systems Engineering and Electronics 2013年第6期24卷 938-945页

作者： Jianbin Lu Hui Xiao Zemin Xi Mingmin Zhang Electronic Engineering College Naval University of Engineering Air Force Early Warning Academy

A cued search algorithm with uncertain detection performance is proposed for phased array radars. Firstly, a target search model based on the information gain criterion is presented with known detection performance, and the statistical characteristic of the detection probability is calculated by using the fluctuant model of the target radar cross section （RCS）. Secondly, when the detection probability is completely unknown, its probability density function is modeled with a beta distribution, and its posterior probability distribution with the radar observation is derived based on the Bayesian theory. Finally simulation results show that the cued search algorithm with a known RCS fluctuant model can achieve the best performance, and the algorithm with the detection probability modeled as a beta distribution is better than that with a random selected detection probability because the model parameters can be updated by the radar observation to approach to the real value of the detection probability.

关键词： phased array radar detection performance cued search information gain beta distribution