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Signal Processing of the Area-Target for a Short-Range Radar

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Journal of Systems engineering and Electronics 2000年第2期11卷 73-80页

作者： Li, Guolin Wang, Baolin Shi, Jusheng naval aeronautical engineering acad Yantai China

This paper presents a multi-component frequency modulation (FM) signal model for short-range radar based on the multi-points scattering model of a target, and proves that the method of computing the instantaneous frequency of single frequency is not suitable to the multi-component signal. The method of TLS-ESPRIT combining the mathematical statistics is presented for obtaining the multi-component signal instantaneous frequency (IF). The computer simulation has shown that the method has the high accuracy for measuring the distance.

关键词： Computer simulation Electromagnetic wave scattering Frequency modulation Mathematical models Statistics

Rapid transfer alignment for SINS of carrier craft

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Journal of Systems engineering and Electronics 2013年第2期24卷 303-308页

作者： Jingshuo Xu Yongjun Wang Zhicai Xiao Qingdao Campus of naval aeronautical and Astronautical University Department of Control engineering Naval Aeronautical and Astronautical University

In order to improve the survival ability and rapid response ability of the carrier craft,a new rapid transfer alignment method of the strapdown inertial navigation system（SINS） on a rocking base is put *** the method,the aircraft carrier does not need any form of ***,interfering motions such as rolling,pitching,and yawing motions caused by sea waves are effectively ***,the deck flexure deformation model is ***,the state space model of transfer alignment is ***,the feasibility of this method is validated by the *** results show that the misalignment angle error can be estimated and reach an anticipated precision-0.2 mrad in 5 s,while the deck deformation angle error can be estimated and reach a better precision- 0.1 mrad in 20 s.

关键词： strapdown inertial navigation system(SINS) transfer alignment carrier aircraft carrier moored.

Maximal capacity nonorthogonal pulse shape modulation

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Chinese Journal of Aeronautics 2015年第6期28卷 1699-1708页

作者： Chen Zhaonan Wang Hongxing Liu Xiguo Zhong Peilin Department of Electrical and Information engineering Naval Aeronautical and Astronautical University Department of Basic Experiment Naval Aeronautical and Astronautical University

To improve spectral utilization of communication system, a novel nonorthogonal pulse shape modulation （NPSM） based on prolate spheroidal wave function （PSWF） is proposed. The modulation employs nonorthogonal PSWF pulses to transmit information and it shows a higher capacity than traditional orthogonal modulations. The NPSM capacity under the constraint of finite input alphabet, which is determined by parameters of PSWF pulse, is derived. An optimiza- tion model for maximal capacity of NPSM is constructed and an exhaustive self-adapting gradient search algorithm for the model is proposed. A practical NPSM scheme with the maximal capacity is obtained by this search algorithm and it is proved to be superior to orthogonal signaling in the capacity. Our theoretical analysis is validated by numerical simulations and practical tests, and the results show that NPSM outperforms orthogonal modulations in the capacity and has a lower Peak-to-Average Power Ratio.

关键词： capacity Modulation Orthogonality Prolate spheroidal wave function Quadrature amplitude modulation

Highly maneuvering target tracking using multi-parameter fusion Singer model

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Journal of Systems engineering and Electronics 2017年第5期28卷 841-850页

作者： Shuyi Jia Yun Zhang Guohong Wang Research Institute of Information Fusion Naval Aeronautical and Astronautical University Department of Aircraft engineering Naval Aeronautical and Astronautical University

An algorithm of highly maneuvering target tracking is proposed to solve the problem of large tracking error caused by strong maneuver. In this algorithm, a new estimator, named as multi-parameter fusion Singer (MF-Singer) model is derived based on the Singer model and the fuzzy reasoning method by using radial acceleration and velocity of the target, and applied to the problem of maneuvering target tracking in strong maneuvering environment and operating environment. The tracking performance of the MF-Singer model is evaluated and compared with other manuevering tracking models. It is shown that the MF-Singer model outperforms these algorithms in several examples.

关键词： maneuvering target multi-parameter fusion Singer (MF-Singer) fuzzy reasoning Singer model

A distributed cooperative guidance law for salvo attack of multiple anti-ship missiles

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Chinese Journal of Aeronautics 2015年第5期28卷 1438-1450页

作者： Zhang Youan Wang Xingliang Wu Huali Department of Control engineering Naval Aeronautical and Astronautical University

The consensus problem of impact time is addressed for multiple anti-ship missiles. A new distributed cooperative guidance law with the form of biased proportional navigation guidance （BPNG） is presented. The proposed guidance law employs the available measurements of relative impact time error as the feedback information to achieve the consensus of impact time among mis- siles and, by exploiting the special structure of the biased cooperative control term, it can handle the seeker＇s field-of-view （FOV） constraint. The proposed scheme ensures convergence to consensus of impact time under either fixed or switching sensing/communication network, and the topological requirements are less restrictive than those in the existing results. Numerical examples are provided to illustrate the effectiveness of the proposed guidance law.

关键词： Cooperative Distributed Field-of-view constraint Missile guidance Missile trajectory control

Distributed H_∞ control of multi-agent systems with directed networks

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Chinese Physics B 2015年第9期24卷 73-79页

作者：刘伟柳爱利周绍磊 Department of Control engineering Naval Aeronautical and Astronautical University

This paper studies the distributed H∞control problem of identical linear time invariant multi-agent systems subject to external disturbances. A directed graph containing a spanning tree is used to model the communication topology. Based on the relative states of the neighbor agents and a subset of absolute states of the agents, distributed static H∞controllers are proposed. The concept of an H∞performance region is extended to the directed graph situation. Then the results are used to solve the leader–follower H∞consensus problem. Sufficient conditions are proposed based on bounded real lemma and algebraic graph theory. The effectiveness of the theoretical results is illustrated via numerical simulations.

关键词： multi-agent systems H∞ control performance region leader–follower H∞ consensus

Guidance law with impact time and impact angle constraints

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Chinese Journal of Aeronautics 2013年第4期26卷 960-966页

作者： Zhang Youan Ma Guoxin Liu Aili Department of Control engineering Naval Aeronautical and Astronautical University

A novel closed-form guidance law with impact time and impact angle constraints is pro- posed for salvo attack of anti-ship missiles, which employs missile＇s normal acceleration （not jerk） as the control command directly. Firstly, the impact time control problem is formulated as tracking the designated time-to-go （the difference between the designated impact time and the current flight time） for the actual time-to-go of missile, and the impact angle control problem is formulated as tracking the designated heading angle for the actual heading angle of missile. Secondly, a biased proportional navigation guidance （BPNG） law with designated heading angle constraint is constructed, and the actual time-to-go estimation for this BPNG is derived analytically by solving the system differential equations. Thirdly, by adding a feedback control to this constructed BPNG to eliminate the time-to-go errorthe difference between the standard time-to-go and the actual time-to-go, a guidance law with adjustable coefficients to control the impact time and impact angle simultaneously is developed. Finally, simulation results demonstrate the performance and feasibility of the proposed approach.

关键词： Feedback control Guidance law Impact angle Impact time Missiles Proportional navigation guidance

Neural Blind Beamformer for Cyclostationary Signals

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Journal of Systems engineering and Electronics 2005年第3期16卷 498-501页

作者：李洪升何友杨日杰 Institute of Information Fusion Naval Aeronautical Engineering Inst. Institute of Information Fusion Naval Aeronautical Engineering Ins.t

A blind beamforming algorithm based on a neural network is presented according to the characteristic of cyclostationary signals. This method transforms the question of estimating beamformer weight vectors into the one of computing the SVD of the cross correlation matrix of array input signals and their frequency shift signals. A cross correlation neural network is introduced to compute the SVD of the cross correlation matrix so as to reduce the computational complexity and carry out the blind beanfforming more efficiently. The improved cross-coupled Hebbian learning rule presented can make the weights of the neural network converge much fast. Therefore, it is more promising in the practical use. This method can restrain noise and interference, simulation proves its correctness.

关键词： cyclostationarity signals blind beamfomaing neural network simulation.

Strategy dominance mechanism of autonomous collaboration in unmanned swarm within the framework of public goods game

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Journal of Systems engineering and Electronics 2023年第5期34卷 1252-1266页

作者： PAN Li WU Zhonghong YU Minggang LIU Jintao MEI Dan Weaponry engineering College Naval University of EngineeringWuhan 430000China Electronics engineering College Naval University of EngineeringWuhan 430000China Coastal Defense College Naval Aeronautical UniversityYantai 264001China Qingdao Campus Naval Aeronautical UniversityQingdao 266000China

The key advantage of unmanned swarm operation is its autonomous cooperation. How to improve the proportion of cooperators is one of the key issues of autonomous collaboration in unmanned swarm operations. This work proposes a strategy dominance mechanism of autonomous collaboration in unmanned swarm within the framework of public goods game. It starts with the requirement analysis of autonomous collaboration in unmanned swarm;and an aspiration-driven multiplayer evolutionary game model is established based on the requirement. Then the average abundance function and strategy dominance condition of the model are constructed by theoretical derivation. Furthermore, the evolutionary mechanism of parameter adjustment in swarm cooperation is revealed via simulation,and the influences of the multiplication factor r, aspiration levelα, threshold m and other parameters on the strategy dominance conditions were simulated for both linear and threshold public goods games(PGGs) to determine the strategy dominance characteristics;Finally, deliberate proposals are suggested to provide a meaningful exploration in the actual control of unmanned swarm cooperation.

关键词： unmanned combat swarm autonomous collabora-tion strategy dominance multi-player public goods game(PGG)