28 February 2019, Volume 37 Issue 4

    

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Think Tank
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  National security for modern countries and science and technology assessment

  ZHANG Bin, ZHANG Shouming, WU Yu

  Science & Technology Review. 2019, 37(4): 6-11. https://doi.org/10.3981/j.issn.1000-7857.2019.04.001

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  Science and technology has become the basic field of our national security system and the important aspect of the game between the international powers, dominating the role of the national security. The basic development of the national security concept of modern countries since World War Ⅱ is analyzed. The prominent effects of science and technology on the social change, as the national strategic support, are studied. The strategic requirements of the scientific and technological assessment in the forward-looking prediction, the comprehensive comparison and the disruptive analysis are suggested.
Exclusive: Electronic Warfare
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  The EW attacking advantages and the space strategic initiative

  HUANG Xuejun, SHAN Shufeng

  Science & Technology Review. 2019, 37(4): 12-15. https://doi.org/10.3981/j.issn.1000-7857.2019.04.002

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  With the increasingly fiercer space strategic counterbalance, the electronic warfare(EW) will become an important operational style for the space control power in the future. With respect to using the electronic warfare to create the attacking advantage to win the strategic initiative,the effective way is analyzed to take the advantage as the electronic warfare attacking party. It is proposed that the attention should be paid to the characteristics of the EW attacking advantages as well as the development of multiple counterbalance methods of the EW technology in the space field, providing new insights into the development requirements of China's current space power.
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  Problems and countermeasures of actual combat training for electronic countermeasures

  MAO Xuequan, ZOU Pengfei, AO Qi

  Science & Technology Review. 2019, 37(4): 16-19. https://doi.org/10.3981/j.issn.1000-7857.2019.04.003

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  The current actual combat training for electronic countermeasures is not very effective. This paper first analyzes the training guidelines, the training support, the training evaluation and other related elements. It is suggested that the combat should be taken as the guide and the countermeasure training should be taken as the tool, to strengthen the training conditions, to improve the evaluation system and the quality and the effectiveness of the combat training.
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  Application of unmanned surface vehicle in electronic warfare

  LIU Xin, YANG Ge, GUO Richeng

  Science & Technology Review. 2019, 37(4): 20-25. https://doi.org/10.3981/j.issn.1000-7857.2019.04.004

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  In view of the development of unmanned equipment and the needs of Chinese national defence, it is a good idea to use the unmanned surface vehicle (USV) in the electronic warfare (EW). This paper reviews the definition of the USV and the development of foreign USVs, and analyzes the characteristics of the current USV design in 4 aspects, including the platform performance, the hull structure, the interface design and the software design, as well as the functions and the classification of the ship-borne EW equipment. A set of USV EW task execution process, and 6 kinds of USV EW typical application scenarios are designed, to provide an outlook of the USV technology development direction in the EW area.
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  Development of anti-radiation missiles and countermeasures

  SONG Wei, WU Xiaohua, XU Shilong

  Science & Technology Review. 2019, 37(4): 26-29. https://doi.org/10.3981/j.issn.1000-7857.2019.04.005

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  Anti-radiation missiles are important hard-kill weapons for suppressing and destroying the enemy air defense radars and various other radiation sources, and play an increasingly important role in the modern information warfare. This paper reviews the development of the anti-radiation missiles, the development trend, electromagnetic threats to us, and the effective countermeasures, as well as the great importance to protect the normal performance of our various electromagnetic radiation sources in the combat and to effectively deal with the anti-radiation missile threats.
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  Airborne laser weapon and the key technology

  TIAN Chunyu, ZHANG Mengshan

  Science & Technology Review. 2019, 37(4): 30-34. https://doi.org/10.3981/j.issn.1000-7857.2019.04.006

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  As a new conceptual weapon, the airborne laser weapon has attracted the attention of various military powers, with a great amount of research work. In this paper, the composition, the working principle and the characteristics of the airborne laser weapon system are reviewed, focusing on the operational application of the airborne laser weapon system. The key technology of the airborne laser weapon system and the technical problems which need to be solved are analyzed.
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  Security threat analysis for electromagnetic signal of aircraft carrier formation

  QIAO Xiaoqiang, LIANG Tao, LIU Yongxiang

  Science & Technology Review. 2019, 37(4): 35-39. https://doi.org/10.3981/j.issn.1000-7857.2019.04.007

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  This paper reviews the electronic reconnaissance threat situation from the surrounding hostile forces against the aircraft carrier formation, and then takes the aircraft carrier formation crossing the Miyako strait as an example to simulate and analyze the threat degree of its electromagnetic signal. The simulation and analysis results show that when the aircraft carrier formation performs the maritime military missions such as training and exercise, it is threatened by the electronic reconnaissance of the hostile forces. The simulation and analysis can provide a reference for the safety frequency of the aircraft carrier formation.
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  Reconnaissance technology based on cognitive electronic warfare

  YANG Ge, LIU Xin, ZHANG Junzhou

  Science & Technology Review. 2019, 37(4): 40-46. https://doi.org/10.3981/j.issn.1000-7857.2019.04.008

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  Based on the emerging development of the global electronic warfare field-The cognitive electronic warfare, this paper focuses on the related technologies of the cognitive reconnaissance subsystem of the cognitive electronic warfare. Firstly, the current situation of the complex electromagnetic environment is analyzed, and the development directions of the future reconnaissance technology are suggested. Secondly, the radar reconnaissance is used to study the development of the traditional electronic reconnaissance receiver and equipment technology, combined with the traditional reconnaissance process The cognitive reconnaissance processing process is selected for identifying the known or unknown radiation source targets, and a reconnaissance subsystem system architecture and the software architecture with open, integrated and modular features are proposed.
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  Development of phased array terminal guidance and its interference technology

  SHENG Jisong, YOU Yi

  Science & Technology Review. 2019, 37(4): 47-54. https://doi.org/10.3981/j.issn.1000-7857.2019.04.009

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  The phased array system terminal guidance radar seeker technology is an important research topic in the world. This paper, firstly reviews the several nations' development situations of the phased array seeker, with a comparison of the characteristics of signals between the phased array radar system and the conventional mechanical radar and an analysis of the interference modes of the phased array and terminal guidance radar. A pseudo-target jamming method is proposed for the high resolution range profile.
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  A Survey of modulation recognition algorithms in non-cooperative communication

  HUANG Zhitao, YANG Jie, WANG Xiang, CUI Xuan, WANG Yongfang

  Science & Technology Review. 2019, 37(4): 55-62. https://doi.org/10.3981/j.issn.1000-7857.2019.04.010

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  Based on a comprehensive study of the modulation recognition algorithm in the non-cooperative communication, this paper reviews the current research status of the communication signal classical modulation recognition algorithm and the intelligent modulation recognition algorithm based on the deep learning. The concept and the connotation of the modulation recognition technology in the noncooperative communication are explained, focusing on the basic principle and the processing flow of the classical modulation recognition algorithm and the intelligent modulation recognition algorithm, the advantages and disadvantages of each kind of algorithms are analyzed, and the future development direction of the modulation recognition algorithm in the non-cooperative communication are discussed.
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  Application of artificial intelligence technology in radar countermeasures

  LIU Chunsheng, HAO Zhili, WANG Wei

  Science & Technology Review. 2019, 37(4): 63-68. https://doi.org/10.3981/j.issn.1000-7857.2019.04.011

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  The artificial intelligence is in a rapid development, and it is influencing people's vision every day. More and more scientific research institutions and enterprise units are working hard to make breakthroughs in their fields through the artificial intelligence technology. The military has also attached a great importance to the maturing of artificial intelligence. This paper reviews the general development of AI technology, focusing on its application in the electronic warfare of military powers. Taking the adaptive radar countermeasures as an example, this paper analyzes the application of AI key technologies in the radar countermeasures, and proposes some problems that need to be paid attention to and solved in the future development.
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  The LPI radar signal recognition based on deep learning and support vector machine

  ZHANG Muqing, WANG Huali, NI Xue

  Science & Technology Review. 2019, 37(4): 69-75. https://doi.org/10.3981/j.issn.1000-7857.2019.04.012

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  A radar signal recognition method of low probability of intercept (LPI) based on the stacked autoencoder and the support vector machine is proposed. First, the signal is transformed to the time-frequency (T-F) domain to obtain the T-F images through the ChoiWilliams Distribution. Second, image processing methods are used to process the T-F images. Then, the stacked autoencoder is used to extract features from the preprocessed images. Finally, the support vector machine (SVM) is used to recognize the signal. The method uses the arbitrary waveform generator (AWG) to generate eight kinds of LPI radar signals and uses the stacked autoencoder combined with the SVM to recognize the signal. Simulation results show that the method can effectively classify the LPI radar signal in low SNR and small sample situations.
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  Assignment distribution model for electro-optic jamming assignment based on genetic algorithms

  DU Yu, JIAO Junjun, MENG Lingjie

  Science & Technology Review. 2019, 37(4): 76-80. https://doi.org/10.3981/j.issn.1000-7857.2019.04.013

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  This paper evaluates the threat degree of photoelectric interference targets by selecting the style, the speed, the altitude, the distance, the angle, the route of the target as the evaluation indices, and constructing an interference task allocation model. The genetic algorithm is used to implement the model and the feasibility of the method is verified by an example.
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  Development of foreign electronic warfare equipment operational test and the enlightenment

  WANG Zhi

  Science & Technology Review. 2019, 37(4): 81-85. https://doi.org/10.3981/j.issn.1000-7857.2019.04.014

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  For a confrontational equipment, the electronic warfare equipment test must be carried out in a real battlefield environment in order to properly evaluate its operational effectiveness. This paper reviews the development of the foreign electronic warfare equipment combat test, and the main experience of the test. It is suggested to carry out theoretical researches, improve the legal system and the management mechanism, and cultivate the related talents.
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  Development of US military's electromagnetic spectrum warfare and its implications

  ZOU Jianjin, QIAO Fang

  Science & Technology Review. 2019, 37(4): 86-90. https://doi.org/10.3981/j.issn.1000-7857.2019.04.015

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  This paper analyzes the electromagnetic spectrum warfare and the aim of the US military's electromagnetic spectrum warfare development strategy. On this basis, the development status of the US military's electromagnetic spectrum warfare, and the development of the US military's electromagnetic spectrum warfare are reviewed. The difficulties involved in its development, combined with the actual situation of China's national defense and military reform, have suggested ways for the development of our military's electromagnetic spectrum warfare.
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  Development of American missile early warning system

  HAN Jinshan, XING Jianping, ZHAGN Hao, GONG Yanzhao

  Science & Technology Review. 2019, 37(4): 91-95. https://doi.org/10.3981/j.issn.1000-7857.2019.04.016

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  The missile early warning system plays an important role in the national strategic early warning and strategic defense system, as an important part of the strategic deterrence in major countries. After more than 60 years of development, a global missile warning system has been established from the early warning to the terminal interception in the United States. This paper first reviews the development history and the current situation of the American missile early warning system, and then analyzes its system characteristics and predicts its future development trend.
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  The electronic warfare in the gulf war waged by the US army and the enlightenment

  WEN Jingpeng, MA Haibo, ZHAO Gang

  Science & Technology Review. 2019, 37(4): 96-100. https://doi.org/10.3981/j.issn.1000-7857.2019.04.017

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  There is not much study of the US Army's electronic warfare in the Gulf War. Based on the information of the US Army's electronic warfare units, the equipment, and the operations in the Gulf War, this paper revisits the US Army's electronic warfare operations, focusing on its influence, and puts forward some suggestions, for accurately understanding the role of the electronic warfare in modern army operations.
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  Analysis of operational capability and confrontation strategy for EA-18G

  LI Daxi, CHEN Shitao, ZHANG Hang, LI Xiaoxi, LI Yanlei, CAO Zeyang

  Science & Technology Review. 2019, 37(4): 101-106. https://doi.org/10.3981/j.issn.1000-7857.2019.04.018

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  The EA-18G Growler has a powerful capability of full spectrum electronic attack and SEAD. Especially, the EA-18G is known for shooting down the F-22 Raptor during the maneuver in 2009, and creating a new airborne combat model of'Firepower + Electronic Attack'. Firstly, this paper analyzes the electronic warfare mission system of the EA-18G, and the operational capability of the EA-18G in detail. Secondly, the operational use mode of the EA-18G is analyzed from the viewpoint of the operational missions and ways. Finally, the strategy suggestion of the Air Defense system in coping with the EA-18G is made.