2015 Vol. 41, No. 10

Display Method:
Volume 41 Issue102015
iconDownload (39289) 1681 iconPreview
Model analysis of bistatic scattering from randomly rough surfaces
CHEN Kunshan, LI Zhaoliang, LIU Yu
2015, 41(10): 1765-1776. doi: 10.13700/j.bh.1001-5965.2015.0205
Abstract:
Model analysis was presented of bistatic scattering features from randomly rough surfaces theoretically. In particular, a statistical advanced integral equation model (AIEM) was selected as the working model. The scattering coefficients in the location of the dip in azimuthal plane were investigated...
RF characteristics of multiple-gap resonant cavity for sheet beam extended interaction klystron
RUAN Cunjun, DAI Jun, CHEN Shuyuan, LI Renjie, ZHAN Min
2015, 41(10): 1777-1784. doi: 10.13700/j.bh.1001-5965.2015.0207
Abstract:
The sheet beam extended interaction klystron (SBEIK) has the typical and attractive characteristics with the plan structural multiple-gap cavity and extended beam-wave interaction system. A type of novel miniaturization strong-coupling five-gap extended resonant cavity was investigated combined with...
Application of dispersion characteristics of periodic structures for high frequency vacuum devices
FENG Jinjun, CAI Jun, HU Yinfu, WU Xianping
2015, 41(10): 1785-1791. doi: 10.13700/j.bh.1001-5965.2015.0209
Abstract:
As the key component of vacuum electron device (VED), slow wave structure is a kind of periodic structure, whose dispersion properties can be presented as the sum of an infinite number of space harmonic wave. Each space harmonic wave exits as a dispersion curve with its characteristic. We proposed t...
Fast electromagnetic simulation of characteristics of radome-antenna system in receiving mode
HE Mang, LIU Jinbo, WANG Binbin, XU Xiaowen, ZHANG Chuanfang, SUN Houjun
2015, 41(10): 1792-1800. doi: 10.13700/j.bh.1001-5965.2015.0212
Abstract:
An efficient hybrid approach, which combines the full-wave and high-frequency method, i.e., the multilevel fast multipole algorithm (MLFMA) based volume-surface integral equation (VSIE) and the modified surface integration (MSI) method, was proposed to analyze the electromagnetic characteristics of ...
Characteristics of hexapolarized MIMO channel in two-mirror channel
PIAO Dazhi, CHEN Peng
2015, 41(10): 1801-1806. doi: 10.13700/j.bh.1001-5965.2015.0215
Abstract:
To study the effect of multipath richness in the two-mirror channel on the characteristics of the hexapolarized multiple-input multiple-output (HPMIMO) channel, a co-located and orthogonal dual-polarized antenna was designed, composed of an electric dipole and an electric loop working at 28GHz, base...
Optimum design of calibration device for field mill type electric field sensor based on finite element method
CUI Yong, YUAN Haiwen, ZHAO Luxing, HU Duo
2015, 41(10): 1807-1812. doi: 10.13700/j.bh.1001-5965.2014.0783
Abstract:
Field mill type electric field sensors are widely used to measure the total electric field at ground level under the high voltage direct current (HVDC) transmission lines. The size of the traditional calibration device is extremely large and it is not very convenient to move for outdoor measurement ...
Thermal aware floor planning timing optimal method for buffer insertion
WANG Xinsheng, HAN Liang, YU Mingyan
2015, 41(10): 1813-1820. doi: 10.13700/j.bh.1001-5965.2014.0809
Abstract:
With the integration degree of integrated circuit (IC) is increasingly high, the heat on a chip is also growing, which leads to an uneven temperature distribution intra-die and affects the propagation delay of the critical path thereby affecting the performance of buffer insertion path. A buffer ins...
Method for EMC antenna factor temperature error correction
HE Yang, SU Donglin, LI Yan, ZHAO Zihua, LIU Hongyi
2015, 41(10): 1821-1829. doi: 10.13700/j.bh.1001-5965.2014.0746
Abstract:
In order to reduce the influence of the outfield environmental temperature and improve the measuring precision of electromagnetic compatibility(EMC) test equipment, a method for antenna factor temperature error correction was presented. Firstly, according to the principle of two antenna calibration ...
Improved eigenfilter-based time-domain wideband beamforming
WANG Jianshu, FAN Yangyu, DU Rui, LYU Guoyun
2015, 41(10): 1830-1835. doi: 10.13700/j.bh.1001-5965.2014.0778
Abstract:
An improved eigenfilter-based wideband beamforming method with frequency invariance and nulls was proposed. Based on the optimization model formed by maximum energy array cost function and linear constraints of array response in main great direction, array spatial response variation was integrated i...
Study on current-tuning-induced intensity noise in resonator integrated optic gyro
ZHI Yinzhou, FENG Lishuang, WANG Junjie, TANG Yichuang
2015, 41(10): 1836-1841. doi: 10.13700/j.bh.1001-5965.2014.0780
Abstract:
Resonator integrated optic gyro (RIOG) employing laser diode (LD) is beneficial to miniaturization developing. However, when the frequency of the LD is tuned by current, accompany intensity noise is produced. Influence of current-tuning-induced intensity noise on the open-loop RIOG was theoretically...
Antenna array layout optimization of collaborative passive millimeter-wave imaging system
SHANG Xiaozhou, SUN Peng, HU Anyong, MIAO Jungang
2015, 41(10): 1842-1847. doi: 10.13700/j.bh.1001-5965.2014.0811
Abstract:
Based on the advantages of phased array and synthetic aperture imaging method in passive millimeter-wave imaging, a collaborative passive millimeter-wave imaging system was developed for real-time and high resolution imaging in human security application. In the horizontal orientation, by applying a...
Analysis of electromagnetic multi-scale structure and non-linear effects
MAO Yuru, XIE Yongjun
2015, 41(10): 1848-1852. doi: 10.13700/j.bh.1001-5965.2015.0210
Abstract:
The microstructures and the electrical contact property may affect the performance of the macro scale objects, and the passive intermodulation (PIM) problems cannot be directly calculated by frequency-domain methods. Firstly, the Floquet's theorem combined with the full-wave method was proposed to a...
Analysis and optimization of active tunable microwave absorber
QI Kainan, WANG Yongfeng, HOU Xinyu, CHEN Junwen
2015, 41(10): 1853-1858. doi: 10.13700/j.bh.1001-5965.2015.0211
Abstract:
In order to improve the limited band of passive radar absorbing materials, an active tunable microwave absorber was designed based on transmission line theory. The absorber was a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer was replace...
Research on radio coverage generated by antennas in confined space
LI Dawei, WANG Junhong, HE Xianshi
2015, 41(10): 1859-1866. doi: 10.13700/j.bh.1001-5965.2015.0213
Abstract:
Efficient radio wave coverage in confined space is one of the foundation factors to guarantee quality and reliability of communication which is important for the layout and optimization of the antenna system. However, the existing researches rarely consider the effect of the antenna parameters on fi...
Error analysis of equivalence principle algorithm on different equivalence surfaces
DANG Xunwang, LI Maokun, YANG Fan, XU Shenheng
2015, 41(10): 1867-1872. doi: 10.13700/j.bh.1001-5965.2015.0214
Abstract:
Equivalence principle algorithm (EPA) is a domain decomposition algorithm based on the Huygens' equivalence principle to solve large scale scattering problems. The errors of the equivalence principle operator (EPO) in EPA using cubic, spherical and smooth cubic equivalence surfaces were analyzed to ...
Aircraft radar stealth test and evaluation technology and progress
XIAO Zhihe, GAO Chao, BAI Yang, YUAN Xiaofeng
2015, 41(10): 1873-1879. doi: 10.13700/j.bh.1001-5965.2015.0220
Abstract:
Weapon equipment stealth is comprehensive. Stealth performance becomes one of the most important combat skills. Stealth testing and evaluation is an important indicator and indispensable link to realize the equipment stealth performance, involving stealth equipment from the design verification,desig...
Several fundamental challenges of millimeter-to-terahertz electron cyclotron devices
DU Chaohai, LUO Li, LIU Pukun
2015, 41(10): 1880-1886. doi: 10.13700/j.bh.1001-5965.2015.0231
Abstract:
It is always an important tendency of the electronic power devices to explore and develop electromagnetic radiation sources operating on higher frequency and with higher power capability. The cyclotron electron device which was developed based on the mechanism of the electron cyclotron maser and wit...
High frequency characteristics for W-band multiple beam staggered double-vane traveling wave tube amplifier
ZHANG Muwu, RUAN Cunjun
2015, 41(10): 1887-1893. doi: 10.13700/j.bh.1001-5965.2015.0074
Abstract:
A new micro-structure scheme was proposed by using three parallel pencil beams instead of the sheet beam for the W-band staggered double vane traveling wave tube amplifier, and detailed analysis and optimization were given for the high frequency characteristic with its input/output couplers. The res...
Neutron single event effects testing and evaluation method for avionics
XUE Haihong, WANG Qunyong, CHEN Dongmei, CHEN Yu, YANG Hui, LI Hongjun
2015, 41(10): 1894-1901. doi: 10.13700/j.bh.1001-5965.2014.0776
Abstract:
The atmospheric neutron radiation reliability parameters, such as hard failure, hard error and soft error for avionics neutron single event effect (NSEE) were defined. A set of testing and evaluation method to demonstrate the avionics NSEE-resistance capability was presented and verified by a case s...
Avionic devices fault diagnosis based on fusion method of rough set and D-S theory
SUN Weichao, LI Wenhai, LI Wenfeng
2015, 41(10): 1902-1909. doi: 10.13700/j.bh.1001-5965.2015.0030
Abstract:
In order to solve the conflict of multi-sources information in the fault diagnosis process of avionics electric equipment, a method based on rough set theory and evidence theory for fault diagnosis was proposed. Because both rough set theory and evidence theory had advantages in dealing with uncerta...
Many-objective optimization based on sub-objective evolutionary algorithm
LEI Yuyao, JIANG Wenzhi, LIU Lijia, MA Xiangling
2015, 41(10): 1910-1917. doi: 10.13700/j.bh.1001-5965.2014.0706
Abstract:
many-objective optimization is widely used in engineering area. There are some flaws to deal with many-objective optimization problem which the number of objectives exceeded three. The method which could chose proper individual solution is very crucial to solve high-dimension many-objective optimiza...
Carrier tracking algorithm based on bandwidth optimization
MU Weiqing, LIU Rongke, SONG Qingping, DUAN Ruifeng
2015, 41(10): 1918-1924. doi: 10.13700/j.bh.1001-5965.2014.0715
Abstract:
In the existing high dynamic weak signal carrier tracking algorithm, frequency locked loops (FLL) auxiliary phase locked loops (PLL) carrier tracking algorithm has the problem that the loop adjusted discontinuously, and easily lost lock. More optimal combination FLL with PLL algorithm and transition...
Annotations and consistency detection for Chinese dual-mode emotional speech database
JING Shaoling, MAO Xia, CHEN Lijiang, ZHANG Nana
2015, 41(10): 1925-1934. doi: 10.13700/j.bh.1001-5965.2014.0771
Abstract:
To solve problem of lacking emotional speech database with rich emotion annotation information, a Chinese dual-mode emotional speech database which contained speech and Electroglottography (EGG) information was established. Annotation and consistency detection for the established database were condu...
Online sketch recognition for mixed point and irregular military symbols
DENG Wei, WU Lingda, ZHANG Yougen, ZHAO Zhipeng
2015, 41(10): 1935-1942. doi: 10.13700/j.bh.1001-5965.2014.0826
Abstract:
Most of current research on online sketched military symbols recognition concerns only one type of symbols, point symbols or irregular symbols, using different methods to recognize separately. But in practical applications the two types of symbols are mixed. It becomes a major issue to find a way to...
GNSS-R delay mapping processing method based on block averaging pre-processing
WANG Feng, YANG Dongkai, LI Weiqiang, ZHANG Yanzhong
2015, 41(10): 1943-1949. doi: 10.13700/j.bh.1001-5965.2015.0040
Abstract:
To improve signal-to-noise ratio of global navigation satellite system reflected signals, a method of processing navigation satellites reflected signal based on block averaging pre-processing (BAP) was presented, which divided the received signals into blocks with period of pseudocode and achieved t...
SMC-PHD algorithm based on squared cubature particles
LIU Zhe, WANG Zulin, XU Mai, LIU Jingxian, YANG Lan
2015, 41(10): 1950-1958. doi: 10.13700/j.bh.1001-5965.2015.0100
Abstract:
Most of the conventional sequential Monte Carlo probability hypothesis density (SMC-PHD) approaches adopt the state transition density as importance sampling function. When targets are with nonlinear motions, such a selection makes few particles with large weights, leading to inaccurate estimation a...
Architecture of unified network based on programmable control gateway
LIU Feng, WANG Yufei
2015, 41(10): 1959-1965. doi: 10.13700/j.bh.1001-5965.2014.0708
Abstract:
Due to the long-term coexistence of Internet Protocol (IP) and non-IP networks, there exist interconnection and interworking difficulties in heterogeneous networks for the difference of network architectures and protocols. Focusing on the gateway, the key node of heterogeneous networks interconnecti...
Constructing general cube to be aware of network security situation
WEN Zhicheng, Chen Zhigang
2015, 41(10): 1966-1974. doi: 10.13700/j.bh.1001-5965.2015.0010
Abstract:
Concerning the problems of limited current network security situation assessment scope, single information source, higher time and space complexity and larger deviation of the accuracy, a method was put forward to construct general cube, which can be aware of the network security situation. The cont...