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检索条件"机构=Science and Technology on Communication Information Security Control Laboratory NO.36"

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An Analysis of Routing Simulation technology of Unmanned Cluster Based on OPNET 1

引用

3rd EAI International Conference on Artificial Intelligence for communications and Networks, AICON 2021

作者： Dai, Jiahao Wang, Yuhui Zhu, Huijie Ren, Yongji Science and Technology on Communication Information Security Control Laboratory Harbin China China Electronic Corporation NO. 36 Institute Zhejiang Jiaxing China Naval Aviation University Changzhi China

ISBN: (数字)9783030901998

ISBN: (纸本)9783030901981

The military strategic guideline under the new situation points out that the base point of future war preparation is to win the informationized war mainly from the direction of unmanned cluster. Routing protocol is an important part of unmanned network communication system, and it is one of the most challenging tasks in unmanned network. This paper simulates five protocols, AODV, DSR, OLSR, TORA and GRP, analyzes the characteristics of each protocol under different circumstances, finds suitable protocols for unmanned trunking communication network under different environments, and provides suggestions for the establishment of a reasonable network. © 2021, ICST Institute for Computer sciences, Social Informatics and Telecommunications Engineering.

关键词： OPNET Routing protocol Unmanned cluster

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A compact wideband planar inverted-F antenna (PIFA) loaded with metamaterial

A compact wideband planar inverted-F antenna (PIFA) loaded w...

引用

2011 Cross Strait Quad-Regional Radio science and Wireless technology Conference, CSQRWC 2011

作者： Li, Xin-Yuan Fu, Jia-Hui Zhang, Kuang Hua, Jun Wu, Qun School of Electronics and Information Engineering Harbin Institute of Technology Harbin 150001 China Science and Technology on Communication Information Security Control Laboratory Jiaxing 314033 China

ISBN: (纸本)9781424497904

This paper proposes a novel planar inverted-F antenna (PIFA) with metamaterial loaded on the ground plane. The metamaterial is composed of an array of Jerusalem cross-shaped PEC structure. Simulation results show that this novel antenna has a bandwidth of 49.4%, which is from 2.56GHz to 4.24GHz. Compared to conventional PIFA, the proposed antenna reduces 91% in size. And the gain reaches more than 3dB over the whole bandwidth. The proposed antenna has a characteristic of backward radiation in the bandwidth. © 2011 IEEE.

关键词： Metamaterials

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Geometric Dilution of Precision for Far-Distance TDOA Location of Shortwave

Geometric Dilution of Precision for Far-Distance TDOA Locati...

引用

information communication Technologies Conference (ICTC)

作者： Xin Yang Yun-Xia Ye No.36 Research Institute of CETC Jiaxing Zhejiang China No.36 Research Institute of CETC Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang China

A method of time difference of arrival (TDOA) location for shortwave signal source by four receiving stations is introduced. The precision of time difference and the Geometric Dilution of Precision (GDOP) of TDOA location are analyzed and simulated. The results show that TDOA estimation performance is positively correlated with signal bandwidth, signal cumulative time and signal-to-noise ratio (SNR), while TDOA location precision is positively correlated with TDOA estimation precision and distance between the receiving stations. At the same time, the simulation analysis of station arrangement among multiple stations is carried out, and the results show that Y-shaped station mode gets the best location effect.

关键词： Time difference of arrival Simulation Estimation Bandwidth Position measurement Reflection communications technology

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A Long Synthetic Aperture Passive Localization Method Using Two Planes

A Long Synthetic Aperture Passive Localization Method Using ...

引用

2021 CIE International Conference on Radar, Radar 2021

作者： Chen, Bowei Wang, Yuqi Sun, Guang-Cai Xing, Mengdao Zhang, Zijing Yang, Xiaoniu Xidian University National Laboratory of Radar Signal Processing Xi'an China Science and Technology on Communication Information Security Control Laboratory Jiaxing China

ISBN: (纸本)9781665498142

A long synthetic aperture passive localization algorithm is proposed in this paper. First of all, the Doppler change rate of signal can be measured by the image contrast and then, grid points are divided within the maximum possible latitude and longitude of the emitter location, the Doppler change rate at each grid point can be calculated by using known position and velocity of the receiver. The grid points at which the calculated Doppler change rate is equal to the value measured by the received signal form an isoline. Two receivers can draw two isolines on the ground and the intersection of the isolines gives estimate of the emitter location. © 2021 IEEE.

关键词： Azimuth focusing Doppler change rate Passive localization Synthetic aperture localization

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The short-time multifractal formalism: Definition and implement* 4th

The short-time multifractal formalism: Definition and implem...

引用

4th International Conference on Intelligent Computing, ICIC 2008

作者： Gang, Xiong Xiaoniu, Yang Huichang, Zhao NO.36 Research Institute of CETC National Laboratory of Information Control Technology For Communication System JiaxingZhe-Jiang314001 China Electronic engineering dept. NJUST Nanjing210094 China

ISBN: (纸本)9783540859291

Although multifractal descirbles the singularity distribution of SE, there is no time information in the multifractal formalism, and the time-varying singularity distribu-tion indicates the spatial dynamics character of system. Therefore, the definition and implement of the short-time multifractal formalism is proposed, which is the prelude of time time-singularity spectra *** this paper, the singularity analysis of windowed signal was given, further the short-time hausdorff spectum was deduced. The Partition Function and Short-time Legendre Spectrum was fractal statistical distribution of SE. WTMM method is popular in implement of MFA, and in section Ⅳ,Short-time multifractal spectra based on WTMM is brough forward.. © Springer-Verlag Berlin Heidelberg 2008.

关键词： Fractals

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Modulation recognition of composite signal based on ResNet and frequency domain graph 3

Modulation recognition of composite signal based on ResNet a...

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2021 3rd International Conference on Artificial Intelligence and Computer science, AICS 2021

作者： Wang, Lijun Han, Yu Ge, Hongfang Zhao, Yongkuan Shen, Lei Science and Technology on Communication Information Security Control Laboratory Jiaxing China The 36th Research Institute of China Electronics Technology Group Corporation Jiaxing China School of Communication Engineering Hangzhou Dianzi University Hangzhou China

Aiming at the problem of composite signal recognition in measurement and control system, a modulation recognition method of composite signal is proposed based on clipped internal modulation signal frequency image and residual network. Residual network has the advantages of fast convergence and high recognition accuracy, which is used to realize the recognition of different modulation modes and different bandwidth signals. The experimental results show that, compared with the traditional decision tree algorithm and the constellation based CNN recognition algorithm, the recognition performance of the proposed method is improved by more than 3dB for the variable bandwidth composite modulation signal set (BPSK-FM and QPSK-FM with internal modulation bandwidth of 128kHz, BPSK-FM and QPSK-FM with internal modulation bandwidth of 2kHz and 2FSK-FM with internal modulation bandwidth of 32kHz and 2kHz). © Journal of Physics: Conference Series 2021.

关键词： Quadrature phase shift keying

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Detection of PFCP Protocol Based on Fuzz Method 2

Detection of PFCP Protocol Based on Fuzz Method

引用

2nd International Conference on Computer, control and Robotics, ICCCR 2022

作者： Cao, Yebei Chen, Yucheng Zhou, Wenan Science and Technology on Communication Information Security Control Laboratory Jiaxing China School of Computer Science Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781665466745

5G as a widely used mobile network, its security is of great significance. PFCP protocol is one of the important protocols that introduced into 5G core network, After the analysis of PFCP protocol and its security threat, this paper profoundly fuzzed the PFCP protocol. In order to improve the efficiency, this paper improves the random Fuzzing test technology, proposes a new data mutation algorithm and frame. By analyzing the test results, we found that the application of the new algorithm made the fuzzing technology greatly improved in terms of efficiency and found security vulnerabilities. © 2022 IEEE.

关键词： Efficiency

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引用

6th IEEE International Conference on Computer and communications, ICCC 2020

作者： Xie, Yifan Zhou, Wenan Hu, Huamiao Lu, Zhicheng Wu, Mengyuan School of Computer Science Beijing University of Posts and Telecommunications Beijing China Science and Technology on Communication Information Security Control Laboratory Beijing China

ISBN: (纸本)9781728186351

Code similarity detection is one of the important means to maintain the healthy development of the software eco-environment. Early code similarity detection method is mainly based on the code attribute measurement technology, this method can quickly detect more obvious similar parts on small-scale code datasets, but when faced with large-scale datasets or code segments with similar syntax and semantics, the detection performance is not effective. The new code similarity detection technology based on tree-structure representation and machine learning can adapt to different data changes, thus providing new solutions. This paper proposes a new detection method that combines the abstract syntax tree (AST) structure and unsupervised clustering, this new method can improve the detection efficiency of code clustering analysis, because it not only considers the syntax and semantic information of the code, but also reduces the workload of code data preprocessing through unsupervised clustering. © 2020 IEEE.

关键词： Cluster analysis

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A wideband circularly polarized microstrip antenna with capacitively coupled feed

A wideband circularly polarized microstrip antenna with capa...

引用

2011 Cross Strait Quad-Regional Radio science and Wireless technology Conference, CSQRWC 2011

作者： Fu, Jia-Hui Chen, Peng Song, Chang-Hong Wu, Qun Hua, Jun Microwave Engineering Department Harbin Institute of Technology Harbin China Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang China

ISBN: (纸本)9781424497904

In this paper, a wideband circularly polarized (CP) microstrip antenna with capacitively coupled feed is presented. There is a pair of slits and two pairs of truncated corners on the patch. A metallic disk connected to a 50 Ω SMA connector is placed below the patch. Simulation results show that the return loss is below -10dB and the BW is 34.2% from 1.84GHz to 2.60GHz. The CP center frequency is 2.35GHz with a CP BW of 8.51%. Good right-hand CP radiation is observed and the gain is about 8.0dB at 2.35GHz. The only metal of the proposed antenna is aluminum and it has the advantage of easy fabrication and low cost. © 2011 IEEE.

关键词： Microstrip antennas

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Modulation recognition of composite modulation signal based on two-fold digital receiver and goodness of fit test

Modulation recognition of composite modulation signal based ...

引用

2021 IEEE International Conference on Electronic technology, communication and information, ICETCI 2021

作者： Lijun, Wang Yu, Han Pan, Zhou Hongfang, Ge Lei, Shen Science and Technology on Communication Information Security Control Laboratory Jiaxing China The 36th Research Institute of China Electronics Technology Group Corporation Jiaxing China School of Communication Engineering Hangzhou Dianzi University Hangzhou China

ISBN: (纸本)9781665432511

Aiming at the modulation recognition problem of mixed signal set {BPSK, QPSK, BPSK-FM, QPSK-FM} with unknown parameters, this paper proposes a modulation recognition algorithm based on two-fold PLL (phase locked loop) and goodness of fit test. The PLL is used to extract the features of the composite modulation signal, and the goodness of fit test is used to measure the distance of the phase cumulative distribution of the demodulation information. Theoretical analysis and simulation results show that the performance of the recognition method based on two-fold PLL and goodness of fit test is better than the widely used modulation recognition method based on constellation. ©2021 IEEE.

关键词： Phase locked loops

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