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  • Exclusive: System of Systems Engineering
    ZHAO Guohong
    Science & Technology Review. 2019, 37(13): 6-13.
    Abstract (786) PDF (1181) HTML   Knowledge map   Save
    This thesis explains the connotation and major features of battle management system and analyzes co-relationships among related notions. A generation-division method for battle management systems is presented. Some typical battle management systems are described. The development motivation and requirement of battle management system, architecture design, and organizing principle and method are sorted, as well as means of management on forces, resources, actions, battlefield knowledge and energy. Finally, the related key technologies are addressed.
  • Exclusive: System of Systems Engineering
    YANG Dongsheng, JIANG Jun
    Science & Technology Review. 2019, 37(13): 14-22.
    Maritime composite formation (MCF) is the main combat force of future, and combat command information architecture construction (CCIAC) is important to support system combat capability formation. This paper clarifies combat command activity characteristics and information requirements, and provides a basic combat command pattern and function mechanism of MCF on the basis and environment of CCIAC of MCF. Then it presents a construction theory and method for command information architecture, and the main idea is all elements of combat command information system of systems should focus on actions and converge to the command and control of MCF, so as to sustain the multi-loop nested command pattern of MCF and meet the needs of information and decision, and shape relative superiorities of MCF including information superiority, decision superiority and action superiority.
  • Exclusive: System of Systems Engineering
    LIU Zhaopeng, SI Guangya, TANG Yubo, LIU Shaojun
    Science & Technology Review. 2019, 37(13): 23-31.
    Aimed at the resource scheduling in joint operation planning, a reactive scheduling framework based on resource flow is proposed. To tackle the time uncertainty in the scheduling process, a method of fuzzy number modeling is proposed. To deal with the resource uncertainty in the scheduling process, a resource competition method based on double priority is proposed, and the global optimal solution is searched by genetic algorithm. For the problem of mission uncertainty, a reactive robust strategy model is designed. The validity of the model is verified by experiments.
  • Exclusive: System of Systems Engineering
    JIAN Ping, XIONG Wei, GUO Lin
    Science & Technology Review. 2019, 37(13): 32-39.
    Networking information-centric system-of-systems (NISoS), as a new concept in recent years,features diversified networking methods, complex heterogeneous topology, constant information exchange and vulnerable to network attacks and emergency. On the basis of concept and features of NISoS, the paper adds service and security factors to the combat from a system perspective and proposes a modeling framework and design method for the networking information-centric system-of-systems in terms of multiple views, and constructs a typical NISoS top-level architecture model. The paper offers a necessary reference to the top-level design and safe development of the networking information-centric system-of-systems.
  • Exclusive: System of Systems Engineering
    WEI Zhengxian, SONG Min, TONG Pengpeng, WANG Hongbin
    Science & Technology Review. 2019, 37(13): 40-46.
    When the system-of-systems (SoS) carries out its missions, it faces various risks of destruction, interference or threat from outside and inside. SoS flow vulnerability is expressed as the degree of impact of mission execution efficiency when a risk event occurs on the SoS flow. In this paper, a method for SoS flow vulnerability analysis based on information entropy is proposed. Firstly, for the risk events and flow structure characteristics, a vulnerability analysis process model is established. Secondly, the SoS flow is transformed into a directed graph model, and a vulnerability calculation model of node in the SoS flow is put forward based on information entropy. Thirdly, the directed graph model of complex SoS flow is decomposed and further simplified to three basic structures:series structure, parallel structure and combination structure, and vulnerability calculation models of these basic structures are also built. Finally, the SoS flow vulnerability can be calculated through the above process. A case study demonstrates the effectiveness of the proposed method.
  • Exclusive: System of Systems Engineering
    GAO Jie, SHA Enlai, XIE Zheng, WANG Zheng
    Science & Technology Review. 2019, 37(13): 47-52.
    An active control technique using blowing method at the tail of aircraft carrier is presented to mitigate the effect of cock wake caused by deck wind on carrier-based aircraft. Computational fluid dynamics is used to calculate the characteristics of the CVN-73 carrier wake field. When the deck wind angle is zero, a comparative study is carried out under working conditions with and without active control technology, respectively, and the effect of blowing angle on the flow field is also analyzed. The result shows that with the increase of blowing angle, the inhibition effect of control technology on downwash in the wake field increases first and then decreases. When the blowing angle is 30 or 45 degrees, the inhibition effect is the most obvious, and the maximum downwash speed can be reduced to half. In conclusion, the active control technique using blowing method can improve the cock wake environment and increase landing safety of carrier-based aircraft.
  • Exclusive: System of Systems Engineering
    ZHAO Xuejun, DONG Yuhao, YUAN Xiujiu, BAO Zhuangzhuang, LI Jialin, LIANG Xiaolong
    Science & Technology Review. 2019, 37(13): 53-58.
    Aiming at route planning of UAV cluster under various threats, this paper proposes a cluster control method and periodic bilevel optimization algorithm. Based on a fixed-point arrival mission, a cluster dynamic control model is constructed by combining d-norm, impact function and inverse function, which can realize Reynolds rules. A periodic bilevel optimization algorithm is designed to solve the route planning problem of central UAV. Eeffectiveness of the model and feasibility of the optimization algorithm are verified by simulation examples. Compared with the hybrid genetic algorithm ie. artificial potential field algorithm, the periodic bilevel optimization algorithm has a higher efficiency and better optimization effect.
  • Exclusive: System of Systems Engineering
    GAO Fei, DU Liang, DU Zhiwei, MENG Wengong
    Science & Technology Review. 2019, 37(13): 59-65.
    In order to maintain the stochastic stability of flight control system of UAV, two Markov processes are used to model both GNSS system fault and integrity monitoring process. The relation between system noises and time to alert (TTA) of GNSS integrity monitor is studied, and a method to obtain the appropriate range of TTA is proposed.
  • Exclusive: System of Systems Engineering
    CUI Shanshan, CUI Yuwei
    Science & Technology Review. 2019, 37(13): 66-69.
    The paper sorts out the basic process of multiple batches and multiple flights in the airport. In view of all kinds of influence factors of the safeguard work process, the paper defines the constraint conditions and optimization objectives for the optimization of airport security resource allocation, classifies the constraint conditions according to their characteristics, and constructs a mathematical model of airport security resource allocation.
  • Exclusive: System of Systems Engineering
    HU Chujun, AN Qianglin, WANG Xiaocheng
    Science & Technology Review. 2019, 37(13): 70-75.
    In this paper, a new model for calculating shipboard helicopter's landing operating envelope at forward fight condition is established by means of the momentum-source CFD method. In the new model, unsteady Euler equations in inertial coordinate system are used as governing equations, finite volume method (FVM) is employed in spatial discretization, and a five-stage Runge-Kutta explicit time iteration algorithm is adopted in temporal discretization, which all can help well simulate the rotor/fuselage/ship coupled aerodynamic characteristics in a complex turbulent flowfield environment during landing on the ship. To improve efficiency significantly, momentumsource model is chosen to represent the effect of rotor on its flowfield. In addition, the helicopter's trim calculation is also considered determine the operating envelope. Then, a Helicopter UH-60 is selected as the research object, and the wind azimuths of 0, 60 and 300 degrees are chosen for trim calculations. By using the available test data, the capability of the present trim method combined with CFD model is examined. With this method, the sample helicopter's landing operating envelope is calculated based on the judging criteria determined by the main rotor and tail rotor's control, helicopter's attitude angle and required power. Results show that the present method is suitable for determining shipboard helicopter's landing operating envelope.
  • Exclusive: System of Systems Engineering
    SUN Haoxiang, CHEN Changxing, CHI Wensheng, LING Yunfei
    Science & Technology Review. 2019, 37(13): 76-82.
    In the spectrum sensing process, cooperative sensing method is to fuse the sensing results of multiple nodes in space to eliminate the influence of path shadow and deep fading and effectively improve accuracy and reliability of results. In order to ensure that the detection probability and the false alarm probability of the fusion result reach the standard, the cooperative decision criterion based on weighted fusion needs to make the perceptual result of each node reach the corresponding standard. Therefore, this paper proposes a method to set an appropriate perceptual threshold for each perceptual node to achieve optimization. Firstly, the analysis of each sensory node can obtain the relationship between the threshold and node weight under the condition of fixed detection probability and false alarm probability. Secondly, using the genetic algorithm, the weight is optimized to realize the weight optimization, the adaptive optimization process of perceptual threshold optimization. Finally, simulation results show that the proposed method can efficiently and accurately realize adaptive optimization of sensing threshold, thus ensuring the actual performance of cooperative spectrum sensing.
  • Exclusive: System of Systems Engineering
    ZHU Liang, LI Bo
    Science & Technology Review. 2019, 37(13): 83-87.
    In whichever jamming mode, the jamming effect of spaceborne SAR mainly lies on the similarity between jamming signal and spaceborne SAR echo, namely signal structure and character of similarity between the two. In this paper, an active jamming method for spaceborne SAR based on the scattering statistical characteristics (SSC) is proposed. The mathematical mode of clutter-like signal used for jamming spaceborne SAR is constructed, the scattering statistics characteristic similarity between spaceborne SAR echo and this jamming signal is analyzed and simulated. Results show that this method has a better interference effect under the same jamming signal ratio and a better application prospect.
  • Exclusive: System of Systems Engineering
    CHEN Jianhua, MU Xihui, DU Fengpo, HE Yi, CUI Donghua
    Science & Technology Review. 2019, 37(13): 88-92.
    To improve the lower limb exoskeleton moving effect, an impedance self-adjusted control method by gait classification for support phase is presented, and a comparative analysis between traditional position control method and constant impedance control methods and the impedance self-adjusted control method is experimentally conducted by setting up an indicator system based on radar maps and evaluating the moving effects of different control methods during the support phase. Results show that the impedance self-adjusted control method can meet different sports needs at different stages of the supporting phase, which has optimal overall motion effect compared with the traditional impedance control method.
  • Exclusive: System of Systems Engineering
    LIU Xubo, LIU Jingshu, LIU Bin, Qin Lingling, CHEN Tao
    Science & Technology Review. 2019, 37(13): 93-97.
    In modern warfare, the radar electronic warfare environment is more and more complicated. With the variety of radar types and the complexity of radar inter-pulse modulation, the difficulty in identifying signal sorting is increasing. This paper proposes a random forest algorithm to sort the characteristics of pulse descriptors, which can daptively select features and achieve classification. Random forest can make the error balance of unbalanced data. Meanwhile through the multi-decision tree voting method, it can quickly complete the rapid training of large amounts of data. In the case of a pulse loss, the recognition accuracy can still be maintained. Experimental results show that the proposed method is effective in presorting radar pulse descriptors.
  • Exclusive: System of Systems Engineering
    SONG Min, JU Yang, WEI Zhengxian
    Science & Technology Review. 2019, 37(13): 98-103.
    Internetware is the software system in which various components in open and independent forms implement cross-network interconnections, intercommunications and collaborations in various collaborative methods. Dynamic evolution is an important characteristic of internetware and would lead to system failure when it occurs. So reliability analysis of internetware oriented dynamic evolution is one of the hot research topics. Firstly, the protocol relations of interaction at the interfaces between components and dynamic evolution error propagation reachability of internetware are analyzed, and a generation model of error propagation reachability graph is established. Secondly, in order to solve the problem of state space "explosion", a Markov state transition graph is generated from the error propagation reachability graph, and a Markov-based reliability analysis method for internetware oriented dynamic evolution is proposed. Finally, a case study demonstrates the effectiveness of the proposed method.
  • Exclusive: System of Systems Engineering
    YIN Huaizhi, XU Songlin, WANG Junyan
    Science & Technology Review. 2019, 37(13): 104-108.
    The high energy characteristic of high energy propelled system makes the fighting efficiency of missile weapons stronger but also more dangerous to use and sustain. The nitrate ester polyether propellant and propelled systems of missiles and rockets using NEPE are generalized. Safety accidents of missiles and rockets in recent years are reviewed briefly. Technique preparation of certain rocket with high energy propelled system is introduced. Hazard source identification on technical preparation of high energy propelled vehicle is studied by PHA method, and the disposal measures are suggested a. The research can provide a technical support for the test of high energy propelled vehicle test in test range.
  • Exclusive: System of Systems Engineering
    ZHANG Jia, YANG Hongyi, LIU Yizhe
    Science & Technology Review. 2019, 37(13): 117-123.
    This paper introduces the concept of DoDAF based on the definition of architecture, discusses the advantages of DoDAF 2.0, explains the meanings of 52 models in 8 viewpoints of DoDAF 2.0, and analyzes the principles and steps of architecture development under DoDAF 2.0. Then it briefly analyzes the application fields of DoDAF 2.0, and explains the operational viewpoint (OV) and system viewpoint (SV) by taking weapons and equipment requirement analysis as an example. Through comprehensive review and analysis, the paper provides a reference for application of DoDAF 2.0 in different fields.
  • Exclusive: System of Systems Engineering
    HU Ping, LIU Kai, QIAN Chao, GU Xuefeng
    Science & Technology Review. 2019, 37(13): 124-128.
    Vietnam has been equipped with Kilo class submarine, which is one of the best silent conventional power submarines in the world, and its "Club-S" submarine-launched anti-ship missile has advanced performance. In this paper, the performance, characteristics and working process of the missile are analyzed, and the anti-submarine and anti-missile capabilities of American aircraft carrier formation are also analyzed, with an emphasis on the anti-missile mode of operation. Since the anti-submarine and anti-missile operational capabilities and tactical application of the US carrier formation are typical representative and referential, we hope this[paper can provide important support for the theoretical research and practical operation of our naval carrier formation in dealing with the threat of submarinelaunched anti-ship missiles.
  • Exclusive: System of Systems Engineering
    ZHENG Xinhua, QU Xiaodong
    Science & Technology Review. 2018, 36(20): 6-9.
    Abstract (1383) PDF (488) HTML   Knowledge map   Save
    Mr. Qian Xuesen is the founder of China's systems engineering theory. According to the experience of China's aerospace industry, he summed up the systems engineering methods with Chinese characteristics, and further developed the theories of system science architecture and meta-synthesis method, etc. By reviewing development process of Qian Xuesen's thought on systems engineering, we can not only understand his thought on systems engineering correctly, but also find out guide and methods for developing SOS engineering.
  • Exclusive: System of Systems Engineering
    GU Jifa
    Science & Technology Review. 2018, 36(20): 10-19.
    This paper introduces the origin of system of systems (SoS) and system of systems engineering (SoSE), the meaning and characteristics of SoS and SoSE, SoSE process, effective architecture framework of SoS and research hotspots of SoSE.[JP2]From the perspective of systems science and systems engineering development history, the background and main contents of SoS and SoSE are described, different viewpoints in the research work are listed, and the current research hotspots are introduced, which can be referred for researchers in this field.
  • Exclusive: System of Systems Engineering
    ZHANG Hongjun, HUANG Baiqiao, JU Hongbin, QIU Bohua, ZHANG Peng
    Science & Technology Review. 2018, 36(20): 20-26.
    In this Paper, after systematic analysis on set of organic characteristics of organic system in nature, organic characteristics are integrated into the concept of systems of system vitality, and after combining artificial intelligence and its relevant information technology, a technical framework which makes the set of organic characteristics directed emergency in engineering technology SoS is proposed. The theoretical framework of SoS vitality provides theoretical guidance in improving system stability and availability, and promoting system ability on optimization and selective evolvability.
  • Exclusive: System of Systems Engineering
    ZHANG Weiming, LIU Junxian, CHEN Tao, LUO Aimin
    Science & Technology Review. 2018, 36(20): 27-31.
    Focused on the new problems of architecture design of system of systems (SoS), we analyzed the conception and characteristics of SoS architecture. By means of some new IT technologies such as AI and Big Data, we present a new paradigm of data and model driven architecture design of SoS. The difficulty problems and the challenges in studying and applying the new paradigm are discussed.
  • Exclusive: System of Systems Engineering
    HE Qiang, WANG Ying
    Science & Technology Review. 2018, 36(20): 32-37.
    This paper introduces the concept and research progress of SoS, expounds the common type of SoS through example, and describes the difference between system and system from multiple dimensions. According to the practice summary, this paper puts forward the core definition criterion of system and SoS, and describes it in detail in combination with engineering practice.
  • Exclusive: System of Systems Engineering
    GUO Baozhu
    Science & Technology Review. 2018, 36(20): 38-42.
    Systems thinking is a systematic way of thinking. Systems engineering is an interdisciplinary approach and means to enable the realization of successful systems. Facing the challenge of technology and management complexity, the emphasis must be given to systems thinking in management and systems engineering in technical fields.
  • Exclusive: System of Systems Engineering
    CAO Song
    Science & Technology Review. 2018, 36(20): 43-47.
    To begin with the analysis of the linguistic meaning of the word engineering, this paper points the essence and characters of systems engineering (SE) on the basis of the difference between science, technology and engineering. The paper also summarizes the definition of SE applied in the engineering projects developing man-made systems, elaborates on the relationship and difference between SE and project management, explains the implication of various arguments about SE. This paper will help catch the essence of SE accurately which may contribute to the research and application of SE at present.
  • Exclusive: System of Systems Engineering
    SHU Zhen, LIU Junxian, LUO Aimin, HE Xinghua
    Science & Technology Review. 2018, 36(20): 48-56.
    As an important method for the top-level design of military information systems, the architecture method has gradually entered the practical application stage from the theoretical research stage. Aiming at specific requirements for architecture design of military information systems at different stages, starting from the concept of architecture, the paper briefly analyzes the role of the architecture framework and the effect of architecture methods, and focuses on the application model of the architecture method in the different stages of military information system development. These stages are requirements demonstration, planning and plan, project verification and development and construction. In order to provide guidance for improving the application ability for architecture design of military information system.
  • Exclusive: System of Systems Engineering
    LU Jinzhi, WANG Guoxin, ZHENG Xinhua, HUANG Baiqiao
    Science & Technology Review. 2018, 36(20): 57-66.
    Model-based Systems Engineering is a new trend in the current Chinese industry It adopts model-based approaches to formalize the system development and minimize the risk brought by design changes of the later development phase. The model-based approaches can be used for across domain integrations of the whole life cycle of products. Though MBSE has been widely used in specific domains, such as software, mechanical systems and electric systems, the system-level integration has not been realized. This paper introduces the results of questionnaires about MBSE application in China. The results can be used for current system developers to understand MBSE and its trends.
  • Exclusive: System of Systems Engineering
    ZHAO Xianmin
    Science & Technology Review. 2018, 36(20): 67-73.
    This article, referring to the entropy increase theory, dissects the nature of system engineering, analyzes the different understanding of research and development activities and organization, reveals the different organization way to produce the principle of difference in terms of running effect. Based on this, a method for structuring and organizing research and development activities is put forward, which is implemented in engineering practice in the form of a meta-file system and an integrated file system.
  • Exclusive: System of Systems Engineering
    WEN Yuejie
    Science & Technology Review. 2018, 36(20): 74-78.
    This paper briefly introduced the necessary steps of tailoring during the application of systems engineering. There are two levels of tailoring:organization-level tailoring and project-level tailoring. A practical tailoring strategy is proposed, cutting unnecessary processes/activities and tasks at first, then adjusting or calibrating in accordance with precise needs. On the basis of references of mature methods, some mistakes and traps are listed to be avoided. At last, in the light of tailoring strategies, a series of domain cases are analyzed from the view of systems engineering application. These research results could be reference for the proper application of systems engineering in the new domains.
  • Exclusive: System of Systems Engineering
    XIN Ji, SUN Qiang, WANG Zhong
    Science & Technology Review. 2018, 36(20): 79-88.
    According to the requirement analysis of military helicopter, the concerned task simulation scenery was set. Then, the developing secondly to motion simulation and logical simulation software by XML language was applied to establish the simulation demonstration model for the scenery deduction and logical function demonstration. The verification approach for battle scenery simulation model was proposed and the simulation model was proved by taking the example of the helicopter attacking tank battles exercised and deducted in various countries. The military helicopter design weight pre hierarchical evaluation method was built and an optimization method design oriented military helicopter operational mission index to technique specification was presented. The system operational performance index was transformed into helicopter flight performance index using optimization method taking the example of the effect of early warning helicopter on the formation of destroyer.
  • Exclusive: System of Systems Engineering
    QIN Liangliang
    Science & Technology Review. 2018, 36(20): 89-91.
    Using the acoustic wave gauge to measure the wave height is the main means for the submarine to obtain the weather information of the sea. Concerning the complexity of the effecting factors on measuring the wave under the environment of submarine movement, this paper analyzes the working principle, environment of underwater wave and the influencing factors of wave error of submarine movement by using the theory of wave spectrum, gives out the methods of submarine measuring waving height based on dynamic wavemeasuring and carries out the verifications by simulation experiment.
  • Exclusive: System of Systems Engineering
    SONG Jian, LING Lin, ZHAO Lei
    Science & Technology Review. 2018, 36(20): 92-96.
    Landing ship is an important transport equipment in amphibious warfare. Aiming at the complexity of its motion law, a maneuvering model of landing ship based on MMG is established in deep and shallow water. When a landing ship is sailing, the thrust of the propeller is the main force, which is used to overcome the resistance of the water and maintain the maneuvering motion of the ship. Therefore, the hydrodynamic model of propeller is an important component of landing ship motion modeling. On the basis of the special maneuvering model of landing ship, the model of propeller force in maneuvering motion of landing ship is emphatically introduced.