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Study on motion compensation method for MMW Chirp - SF radar
Wang Guili,Li Xingguo
Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 184-187
MMW Chirp - SF radar is a kind of radar to get high range resolution, but the problem of rangevelocity coupling is serious. So it is necessary to carry out the motion compensation in order to increase the range resolution of moving target. This paper puts forward a velocity measurement method compounding the Pulse Doppler velocity measurement and the time-domain correlation method based on Chirp - SF signal. The simulations results show that this method can be used to measure velocity accurately with simple arithmetic and high speed.
Keywords: MMW radar Chirp - SF Doppler motion compensation
Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems
Sun Zhongliang,Dou Wenbin
Strategic Study of CAE 2000, Volume 2, Issue 3, Pages 42-47
Recently millimeter wave imaging absorbs many attentions. Especially much research work has been done on the millimeter focal imaging because of its advantage of real time imaging. This paper analyzes extended hemispherical lens, which can be used in focal imaging. An integrated antenna array is placed at the back plane of the lens to receive the power focused by the lens. This structure can eliminate the effect of the surface wave exited in the thick dielectric substrates at millimeter wave wavelengths. Low loss and compact are its merit. Assuming an electromagnetic wave is incident on the lens surface, the field distribution in focal space of the lens is analyzed by using Stratton-Chu formula and ray tracing method. It will provide much information about the imaging performance of the lens. Experiments have been carried out for two types of incident waves, one is normally incident plane wave and another is Gaussian-beam. Good agreement has been found between experiments and calculation results. The lens antenna also can be used to eliminate the transition between paraboloidal antenna and integrated front-end in conventional integrated millimeter wave systems so that the system loss can be decreased and performance can be improved. Furthermore, the lens can be used to couple with a quasi-optical system. The results presented here will provide useful guidelines for the above mentioned applications.
Keywords: millimeter waves antennas imaging extended hemispherical lens
The application of advanced threshold denoising tothe MMW target radiation signal
Fan Qinghui,Li Xingguo
Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 153-157
In this paper based on the characteristics of millimeter wave radiation signal for wavelet transform, non-negative wavelet coefficient is used as the wavelet coefficient of the signal. For a given threshold value, the wavelet coefficient which is smaller than the threshold is set zero and the wavelet coefficient which is larger than the threshold is set the difference between the coefficient and a constant a.The method for valuing a is inferred by the variance function of signal, and the experiments show that it has good ability of removing the noise in MMW target radiation signal.
Keywords: The application of advanced threshold denoising tothe MMW target radiation signal
Hu Ronglin,Li Xingguo
Strategic Study of CAE 2007, Volume 9, Issue 10, Pages 65-70
The basic principle of millimeter wave remote controlling munitions (MMW-RCTCM) is demonstrated in the introduction. Then the concept of correctable intercepting flow is proposed. And the anti-air shooting model of millimeter wave remote controlling munitions (MMW-RCTCM) intercepting mobile anti-ship missile (MACM) is established in section 2 and 3. Subsequently, the hitting probability of single MMW-RCTCM vs. single MACM as well as MMW-RCTCM flow vs. single MACM and MMW-RCTCM flow vs. MACM flow are analyzedin detail. The probabilities of the above are simulated based on the parameters of the two sides of attacking and intercepting in the 5th section. It is illustrated that comparing with the non-controlling munitions, the efficiency of MMW-RCTCM is increased remarkably. At the last, it is concluded that the MMW-RCTCM can resist the attacking of saturate flow; ultra-sonic MACM.
Keywords: MMW remote controlling trajectory correction munitions correctable intercepting flow anti-ship missile hitting probability
Near range millimeter wave synthetic aperture radiometer passive range measurement
Wang Benqing,Li Xingguo
Strategic Study of CAE 2010, Volume 12, Issue 3, Pages 95-99
The Particle Swarm Optimization (PSO) is an evolutionary computation, which not only can search solutions randomly and fully, but also is convenient to be carried out. Hence, the article focuses on the application of PSO to the multiple-objective coordination optimization of project, looking forward to seeking best solutions easily and quickly. After introducing the basic theory of the algorithms and its several versions, the article aims at the efficiency coefficient of quality, cost, time and resource subsystem, and set up a multiple optimization coordination model. In the following part, the article introduces how to apply PSO to solve the project coordination optimization problem in detail. The numeric example followed indicates that PSO can solve the multiple-objectives coordination optimization problem of project exactly and quickly.
Keywords: Particle Swarm Optimization (PSO) project management efficiency coefficient of coordination multiple optimization coordination model numeric example
Passive millimeter-wave target recognition based on Laplacian eigenmaps
Luo Lei,Li Yuehua,Luan Yinghong
Strategic Study of CAE 2010, Volume 12, Issue 3, Pages 77-81
Aiming at the disadvantages of feature extraction and selection in the traditional method for passive millimeter-wave (MMW) metal target recognition, the existence and characteristics of low dimensional manifold of the short-time Fourier spectrum of metal target echo signal are explored using manifold learning algorithm, Laplacian eigenmaps. Target classification is performed through comparing the similarity of the test samples and the positive class in terms of the low dimensional manifold. The experiments show that the method gets higher recognition rate than other linear and kernel-based nonlinear dimensionality reduction algorithm, and is robust to data aliasing.
Keywords: manifold learning Laplacian eigenmaps nonlinear dimensionality reduction low dimensional manifold MMW
Xichen Liu, Lin Yang, Daizhong Yu,362475709@qq.com,eelyang@uestc.edu.cn,15908107465@163.com
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 503-516 doi: 10.1631/FITEE.2000464
Keywords: 毫米波;两径模型;均方根时延扩展;功率延迟分布;CI-TRH路径损耗模型
Wide-Angle Scanning Antennas for Millimeter-Wave 5G Applications Article
Raj Mittra, Abdelkhalek Nasri, Ravi Kumar Arya
Engineering 2022, Volume 11, Issue 4, Pages 60-73 doi: 10.1016/j.eng.2021.10.017
The fifth generation (5G) network communication systems operate in the millimeter waves and are expected to provide a much higher data rate in the multi-gigabit range, which is impossible to achieve using current wireless services, including the sub-6 GHz band. In this work, we briefly review several existing designs of millimeter-wave phased arrays for 5G applications, beginning with the low-profile antenna array designs that either are fixed beam or scan the beam only in one plane. We then move on to array systems that offer two-dimensional (2D) scan capability, which is highly desirable for a majority of 5G applications. Next, in the main body of the paper, we discuss two different strategies for designing scanning arrays, both of which circumvent the use of conventional phase shifters to achieve beam scanning. We note that it is highly desirable to search for alternatives to conventional phase shifters in the millimeter-wave range because legacy phase shifters are both lossy and costly; furthermore, alternatives such as active phase shifters, which include radio frequency amplifiers, are both expensive and power-hungry. Given this backdrop, we propose two different antenna systems with potential for the desired 2D scan performance in the millimeter-wave range. The first of these is a Luneburg lens, which is excited either by a 2D waveguide array or by a microstrip patch antenna array to realize 2D scan capability. Next, for second design, we turn to phased-array designs in which the conventional phase shifter is replaced by switchable PIN diodes or varactor diodes, inserted between radiating slots in a waveguide to provide the desired phase shifts for scanning. Finally, we discuss several approaches to enhance the gain of the array by modifying the conventional array configurations. We describe novel techniques for realizing both one-dimensional (1D) and 2D scans by using a reconfigurable metasurface type of panels.Graphical abstractA number of designs for scanning antennas are presented in this work to realize a one- or two-dimensional scan. The first of these is a Luneburg lens, together with a feed array, designed to realize a wide-angle scan The the second design is based on the use of an electronically reconfigurable phase shifter, which utilizes PIN or varactor diodes inserted between radiating slots in a curved waveguide to provide the desired phase shifts. Next, the paper introduces a novel design to realize both one- and two-dimensional scans, by using reconfigurable metasurface type of panels to provide a wide-angle beam-scanning performance, without compromising either the impedance match or the gain of the array. Additionally, the paper describes several techniques for enhancing the gain of the array to achieve gain levels as high as 30 dB, to render the scanning array competitive with reflectors, for instance.Download : Download high-res image (52KB)Download : Download full-size image
Keywords: Luneburg lens Scanning arrays Millimeter-wave antennas Switchable phase shifters Reconfigurable metasurfaces
Peize Zhang, Haiming Wang, Wei Hong,pzzhang@seu.edu.cn,hmwang@seu.edu.cn,weihong@seu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 471-487 doi: 10.1631/FITEE.2000489
Keywords: 毫米波通信;分簇;绕射;多路通道;传播测量
Tayyab MEHMOOD, Hina QAYYUM, Salman GHAFOOR
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 2, Pages 300-306 doi: 10.1631/FITEE.1700056
A radio-over-fiber (RoF) distributed antenna system (DAS) architecture is proposed, where millimeter wave (mm-wave) signals are transmitted to four different radio access units (RAUs) arranged in a ring topology. The proposed architecture transmits duplex data of 128 Mb/s to each RAU in both downlink (DL) and uplink (UL) directions. The radio frequency (RF) signals are transmitted by polarization multiplexing a multi-wavelength source. Millimeter-wave signals at a frequency of 25 GHz are generated at each RAU using remote heterodyne detection. The proposed architecture provides increased coverage while maintaining good bit error rate (BER) results.
Keywords: Radio over fiber Millimeter wave Radio access units
Prior information based channel estimation for millimeter-wave massive MIMO vehicular communications in 5G and beyond Research Articles
Zhao Yi, Weixia Zou, Xuebin Sun,yz17tx@bupt.edu.cn,zwx0218@bupt.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 6, Pages 777-789 doi: 10.1631/FITEE.2000515
Keywords: 大规模多入多出;毫米波;信道估计;车辆通信;时变
Zhiqiang Wang, Jiawei Liu, Jun Wang, Guangrong Yue,wangzq@std.uestc.edu.cn,842927584@qq.com,junwang@uestc.edu.cn,yuegr@uestc.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 560-570 doi: 10.1631/FITEE.2000451
Keywords: 超大规模相控阵;毫米波;波束倾斜;Zadoff-Chu;单载波频域均衡
Qingyi Guo, Hang Wong,guo_qingyi@163.com,hang.wong@cityu.edu.hk
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 599-608 doi: 10.1631/FITEE.2000514
Modeling and performance analysis of OAM-GSM millimeter-wave wireless communication systems
Qi Zhang, Xusheng Xiong, Qiang Li, Tao Han, Yi Zhong,qiqiz@hust.edu.cn,xiongxusheng@hust.edu.cn,qli_patrick@hust.edu.cn,hantao@hust.edu.cn,yzhong@hust.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 527-547 doi: 10.1631/FITEE.2000444
Keywords: 轨道角动量;广义空间调制;毫米波通信;信道容量;能量效率;误比特率
Analysis and design of transformer-based CMOS ultra-wideband millimeter-wave circuits for wireless applications: a review Review Articles
Yi-ming YU, Kai KANG
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 97-115 doi: 10.1631/FITEE.1900491
Keywords: CMOS Millimeter-wave (mm-Wave) Ultra-wideband Transformer Low-noise amplifier Injection-locked fre-quency tripler Injection-locked frequency divider Mixer
Title Author Date Type Operation
Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems
Sun Zhongliang,Dou Wenbin
Journal Article
The application of advanced threshold denoising tothe MMW target radiation signal
Fan Qinghui,Li Xingguo
Journal Article
Simulation on Hitting Probability of MMW Remote ControllingTrajectory Correction Munition Intercepting Mobile Anti-ship Missile
Hu Ronglin,Li Xingguo
Journal Article
Near range millimeter wave synthetic aperture radiometer passive range measurement
Wang Benqing,Li Xingguo
Journal Article
Passive millimeter-wave target recognition based on Laplacian eigenmaps
Luo Lei,Li Yuehua,Luan Yinghong
Journal Article
Empirical study on directional millimeter-wave propagation in vehicle-to-infrastructure communications between road and roadside
Xichen Liu, Lin Yang, Daizhong Yu,362475709@qq.com,eelyang@uestc.edu.cn,15908107465@163.com
Journal Article
Wide-Angle Scanning Antennas for Millimeter-Wave 5G Applications
Raj Mittra, Abdelkhalek Nasri, Ravi Kumar Arya
Journal Article
Radio propagation measurement and cluster-based analysis for millimeter-wave cellular systems in dense urban environments
Peize Zhang, Haiming Wang, Wei Hong,pzzhang@seu.edu.cn,hmwang@seu.edu.cn,weihong@seu.edu.cn
Journal Article
Polarizationmultiplexing based duplex radio-over-fiber link for millimeterwave signal transmission to a ring of multiple radio access units
Tayyab MEHMOOD, Hina QAYYUM, Salman GHAFOOR
Journal Article
Prior information based channel estimation for millimeter-wave massive MIMO vehicular communications in 5G and beyond
Zhao Yi, Weixia Zou, Xuebin Sun,yz17tx@bupt.edu.cn,zwx0218@bupt.edu.cn
Journal Article
Beam squint effect on high-throughput millimeter-wave communication with an ultra-massive phased array
Zhiqiang Wang, Jiawei Liu, Jun Wang, Guangrong Yue,wangzq@std.uestc.edu.cn,842927584@qq.com,junwang@uestc.edu.cn,yuegr@uestc.edu.cn
Journal Article
A dual-polarized Fabry–Pérot antenna with high gain and wide bandwidth for millimeter-wave applications
Qingyi Guo, Hang Wong,guo_qingyi@163.com,hang.wong@cityu.edu.hk
Journal Article
Modeling and performance analysis of OAM-GSM millimeter-wave wireless communication systems
Qi Zhang, Xusheng Xiong, Qiang Li, Tao Han, Yi Zhong,qiqiz@hust.edu.cn,xiongxusheng@hust.edu.cn,qli_patrick@hust.edu.cn,hantao@hust.edu.cn,yzhong@hust.edu.cn
Journal Article