Journals >Electronics Optics & Control
Contents
2013
Volume: 20 Issue 12
24 Article(s)
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Research Article
Submarine Searching Models for Helicopters Encircled Sonobuoy Array
QI Xuewen, YAN Jiangang, JIN Fuxin, and GAO Dongfei
Several typical styles of helicopters encircled sonobuoy arrays are introducedand the sonobuoys position models are establishedwhich provides a scientific theoretical basis for sonobuoy placing.The distribution model of submarines initial position was set up and the method for calculating the distribution radius oSeveral typical styles of helicopters encircled sonobuoy arrays are introducedand the sonobuoys position models are establishedwhich provides a scientific theoretical basis for sonobuoy placing.The distribution model of submarines initial position was set up and the method for calculating the distribution radius of the submarines was described.Thenthe submarines maximum velocity was estimated mathematically based on some specific hypothesises.The submarines maximum velocity was defined as twice of its economical speedwhich rationality was demonstrated through the probability theory.In this waythe submarines velocity obeys Rayleigh Distribution.Finallysimulation was made about the effect of the submarines initial position distribution and their economical speed on the antisubmarine searching probability of the encircled sonobuoy arraysand some results were obtained..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 10 (2013)
Complexity Evaluation of Battlefield Electromagnetic Environment Based on Value of Game
TANG Shujuan, PENG Fang, WU Lan, and LI Defang
To make the commander recognize the complicated electromagnetic environment and make correct decisionthe complexity evaluation of battlefield electromagnetic environment was studied.The common complexity evaluation methods was summarized at first.Thenan evaluation method based on value of a Game was proposed from theTo make the commander recognize the complicated electromagnetic environment and make correct decisionthe complexity evaluation of battlefield electromagnetic environment was studied.The common complexity evaluation methods was summarized at first.Thenan evaluation method based on value of a Game was proposed from the perspective of operational application.A model of evaluation was constructed and the solution under the optimal mixed strategy was given.The calculation of the scenario showed thatthis method can evaluate the degree of complexity while the both sides have multiple optional operation modes and make the optimized combat operation selectionthus can improve the decisionmaking and training effect..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 14 (2013)
The Important Role of Fire Control System in Air Combat——Soul of Fighters
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In recent yearswith the complete upgrade of different kinds of aviation weapon equipment different academies may have different definitions on the functions of the fire control system.In this paperthe function of the fire control system in air combat is discussed with its future development direction.Firstthe naturIn recent yearswith the complete upgrade of different kinds of aviation weapon equipment different academies may have different definitions on the functions of the fire control system.In this paperthe function of the fire control system in air combat is discussed with its future development direction.Firstthe nature of fire control system and its functions are analyzed in detailand the role of it in the airborne system is discussed.Secondthe demand to the fire control system is proposed considering the operational requirementsand the effect of the system on improving the operational effectiveness is presented.Finallythe conclusion is proposed that the integration of command and control and the intelligent fire control system should be developed jointly to meet the demand of future combat..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 1 (2013)
SVM Based Evaluation on AntiJamming Performance of Infrared Imaging Seekers
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The antijamming performance of Infrared Imaging Seekers (IRIS) is determined by inherent characteristics and antijamming technologies of the seekers.Firstlya set of evaluation index system was given after analyzing the above two aspects.Thenthe antijamming evaluation model of IRIS was established based on Support The antijamming performance of Infrared Imaging Seekers (IRIS) is determined by inherent characteristics and antijamming technologies of the seekers.Firstlya set of evaluation index system was given after analyzing the above two aspects.Thenthe antijamming evaluation model of IRIS was established based on Support Vector Machine (SVM) method.The digital simulation indicates the practicability of the index system and the evaluation method..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 6 (2013)
Fire Assignment Based on QuantumInspired Estimation of Distribution Algorithm
ZHANG Yi, YANG Xiuxia, and ZHOU Shaolei
Fire assignment is a classical hard NP problem.To solve the problem rapidly and efficientlya nonlinear integer programming model was built up and a new quantuminspired estimation of distribution algorithm (QEDA) is providedwhich combined the merit of global search of the estimation of distribution algorithm (EDA) anFire assignment is a classical hard NP problem.To solve the problem rapidly and efficientlya nonlinear integer programming model was built up and a new quantuminspired estimation of distribution algorithm (QEDA) is providedwhich combined the merit of global search of the estimation of distribution algorithm (EDA) and the merit of local search of the quantum evolution algorithm (QEA).A reasonable encoding method was used and an adaptive quantum rotated operator was designed for fire distribution to improve the iteration efficiency and search capability.Simulation results proved the effectiveness of the algorithm and showed that it can improve the rapidity and accurateness effectively for fire assignment..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 18 (2013)
Neural Network and Evidence Theory Based Improvements on Submarine Search Strategy of CGF
HUAN Jing, TENG Kenan, and TANG Jinguo
Since the Computer Generated Force (CGF) can not take full advantage of battlefield information to optimize CGF submarine search strategy in the cooperative antisubmarine combatthe information fusion technology was introduced into the antisubmarine warfare simulation based on the effective interaction of the informaSince the Computer Generated Force (CGF) can not take full advantage of battlefield information to optimize CGF submarine search strategy in the cooperative antisubmarine combatthe information fusion technology was introduced into the antisubmarine warfare simulation based on the effective interaction of the information between CGF.The basic confidence assignment of the evidence information was obtained using Back Propagation (BP) artificial neural networkand the information from antisubmarine CGF was synthesized by using the improved DS evidence theory.And thus the antisubmarine CGF mobile strategy was improved.Simulation results show that the introduction of artificial neural network and information fusion technology in antisubmarine CGF submarine search process can improve the antisubmarine efficiency..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 22 (2013)
Sonobuoy's Optimized Search Depth Research Based on Game Theory
QIN Feng, SUN Mingtai, and ZHOU Lihui
In antisubmarine warfareit is difficult to choose the sonobuoys search depth for obtaining the optimum detection effectiveness because of the unknown depth of submarine and complex underwater acoustic environmental.Thereforeit is necessary to gain the sonobuoys optimized search depth using game theory and simulatiIn antisubmarine warfareit is difficult to choose the sonobuoys search depth for obtaining the optimum detection effectiveness because of the unknown depth of submarine and complex underwater acoustic environmental.Thereforeit is necessary to gain the sonobuoys optimized search depth using game theory and simulation of underwater acoustic environmental effect.The optimized depth can guarantee the maximum detection capability for the sonobuoy even when the submarine is at a depth difficult to be detected..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 27 (2013)
Affine Design of Subspace Predictive Control Under Fault Estimatio
nWANG Jianhong
A new direct design method was used based on closed loop inputoutput measured data for fault estimationand controllers were designed without setting up a state space model for the fault and system.An inputoutput relationship of the closed loop system was used to parameterize a least square problem for fault estimatiA new direct design method was used based on closed loop inputoutput measured data for fault estimationand controllers were designed without setting up a state space model for the fault and system.An inputoutput relationship of the closed loop system was used to parameterize a least square problem for fault estimation.When imposing the lower and upper bounds constrain conditions on the faultsthe fast gradient method was applied to solve it.On basis of the fault estimationsa concept of the subspace predictive control was introduced to consider how to design the controller when the control inputs have the affine forms.The mutually iterative steepest descent method was used to obtain some affine terms and gain termsaccording to the separable principle.Finally the effectiveness of the method was demonstrated by an example of helicopter in hovering state..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 31 (2013)
Improvement and Implementation of the Adaptive and Automatic White Balance Algorithm
TIAN Likun, LIU Xiaohong, LI Jie, and GUO Xiaoguang
In order to correct the unrealistic color of the images captured by the highresolution image acquisition system in real timean improved adaptive and automatic white balance algorithm was proposed.The color temperature estimation in the YCbCr color space was completed by this algorithm，and a regulation module was addeIn order to correct the unrealistic color of the images captured by the highresolution image acquisition system in real timean improved adaptive and automatic white balance algorithm was proposed.The color temperature estimation in the YCbCr color space was completed by this algorithm，and a regulation module was added to improve the calculation precision of channel gain continuously.Compared with some other automatic white balance algorithmsit could obtain better color correction performance.The circuit design was optimized according to the characteristic of FPGA.The experiment results show that the algorithm consumes less hardware resourcesis fast in image processing and can meet the realtime requirement of highresolution image acquisition system..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 37 (2013)
Algorithm of ScaleChanging Object Tracking Based on LogPolar Transformation
LI Wu, HOU Zhiqiang, and WEI Guojian
A practical tracking system should be equipped with scale adaptation mechanism.To solve the problem of the traditional methods which could not keep up with the scale changing timely and accuratelythe particle filter and an improved Mean Shift method were introduced to locate the centroid of the target.Thenthe correlaA practical tracking system should be equipped with scale adaptation mechanism.To solve the problem of the traditional methods which could not keep up with the scale changing timely and accuratelythe particle filter and an improved Mean Shift method were introduced to locate the centroid of the target.Thenthe correlation coefficient was adopted to map the object and its candidate in the LogPolar Transformation domain to fit the target scale.Experimental results demonstrated that the composite algorithm can select a proper size of tracking window adaptively.Compared with the traditional methodit has a better robustness..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 42 (2013)
An MIMO Radar Reconnaissance Identification Method Based on Blind Source Separation
JIANG Hairong, ZHANG Yu, and RAN Jinhe
To correctly sort MIMO radar signalsa new reconnaissance method is presentedwhich can make multiple reconnaissance planes collect radar signals in multiple positions at the same timeand multiple independent observations can be obtained.The blind source separation algorithm of complex maximization of nonGaussianity To correctly sort MIMO radar signalsa new reconnaissance method is presentedwhich can make multiple reconnaissance planes collect radar signals in multiple positions at the same timeand multiple independent observations can be obtained.The blind source separation algorithm of complex maximization of nonGaussianity (CMN) is utilized to sort MIMO radar signals.Simulation results show that a separation performance of -10 dB can be achieved with SNR as 6 dB for several typical orthogonal waveforms such as phasecoded and frequency division liner frequency modulation waveforms without considering the amplitude fluctuation.The relative analysis of separated waveforms also demonstrates the validity of the method..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 46 (2013)
ObjectLevel Change Detection Based on Image Fusion and MultiScale Segmentation
WU Junzheng, YAN Weidong, NI Weiping, and BIAN Hui
The traditional pixellevel change detection algorithms have the disadvantage of high requirements for radiometric correction accuracy and threshold selectionwhich may limit their applications.An analysis was made to the multiscale segmentation methodand an objectlevel algorithm was proposed based on it.The fused iThe traditional pixellevel change detection algorithms have the disadvantage of high requirements for radiometric correction accuracy and threshold selectionwhich may limit their applications.An analysis was made to the multiscale segmentation methodand an objectlevel algorithm was proposed based on it.The fused image of the remote sensing images at different time phases was segmented by using objectoriented method in coarse and fine scales respectively to capture object areas of different sizes.Discrepancy image was obtained after analyzing of characteristics vectorsand the intensity of the changed information was defined.Thenthe decisionlevel fusion was implemented using the measurement results of the coarse and fine scales based on multivalued logic theory.Experiments indicate thatcompared with traditional pixellevel change detection algorithmsthe algorithm is less influenced by radiometric discrepancyhas higher detection accuracyand can evaluate the changed intensity accurately..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 51 (2013)
Research on Motion Characteristics of Pendulous Gyroscope in Large Azimuth
CHEN He, ZHANG Zhili, ZHOU Zhaofa, WANG Kai, and MA Chao
The current research on motion of pendulous gyroscope is mainly limited in minute azimuth anglewhich cant satisfy the requirement of quick omnibearing north seeking.Unlike the traditional methodwe made analysis on motion characteristics of pendulous gyroscope in large azimuth angleestablished the motion model baseThe current research on motion of pendulous gyroscope is mainly limited in minute azimuth anglewhich cant satisfy the requirement of quick omnibearing north seeking.Unlike the traditional methodwe made analysis on motion characteristics of pendulous gyroscope in large azimuth angleestablished the motion model based on the Euler dynamical equationsand simplified it reasonably according to the actual conditions.Qualitative analysis of movement stability was made based on the Liapunov stability theoryand the condition where there is only one stable balance point was gained.Simulations show that when the azimuth angle is largethe movement of pendulous gyroscope around its equilibrium point is not a sine curvewhich is different from the case in minute azimuth angle;and the swing period varies with pendulum deflection and torque of suspending string.These conclusions can provide a theoretical basis for quick omnibearing north seeking with a large azimuth..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 56 (2013)
Design of a Polarized Navigation Sensor Calibration System
LI Chenggui, SUN Yanfeng, and WEI Peng
A calibration system used to test polarization navigation sensors was designed in the laboratory based on the polarization law of the natural lightwhich has been fabricated into a prototype.The controlling programs of the integrating sphere and highprecision turn table were developed using VC++6.0.The experiment resuA calibration system used to test polarization navigation sensors was designed in the laboratory based on the polarization law of the natural lightwhich has been fabricated into a prototype.The controlling programs of the integrating sphere and highprecision turn table were developed using VC++6.0.The experiment results indicate the rationality and feasibility of the calibration systemwhich can satisfy the requirements under the condition of laboratory..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 60 (2013)
Design of a Minitype and HighPrecision Infrared Blackbody Radiator
CAO Haiyuan, WAN Qiang, CHU Hua, and MI Chaowei
An infrared blackbody radiator is a pivotal part of test and calibration equipment for an infrared system.To meet the requirements of minitypelight weight and highprecision for portable field test equipment of the infrared imagerwe designed the structurecontrol circuit as well as the software of blackbody radiator.An infrared blackbody radiator is a pivotal part of test and calibration equipment for an infrared system.To meet the requirements of minitypelight weight and highprecision for portable field test equipment of the infrared imagerwe designed the structurecontrol circuit as well as the software of blackbody radiator.The blackbody radiator componentsmall and highly efficientwas composed of redcopper radiant areathermoelectric cooler and thermal sink.The temperature acquisition precision of 0.0122 ℃ was realized by using the bridge for measuring temperature driven by the constant current.The conversion precision of 0.01 ℃ between the acquired voltage and the real temperature was achieved by using the indexing function of platinum resistance and the Newton iteration method.Test result shows that the emissivitytemperature control precision and the size of the IR blackbody radiator can meet the requirementand the infrared blackbody radiator has successful application effect..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 63 (2013)
Design and Realization of a Flight Visualization Simulation System
WANG Gang, MEI Wei, LIU Heng, and XIAO Ying
In order to create an flight visualization simulation system in manintheloopan aircraft motion/dynamic and aerodynamic/gravity model was established to calculate flight parameters and expression of rotation quaternion in real timeand simulating module was designed based on Matlab/Simulink conditions.A 3D virtual rIn order to create an flight visualization simulation system in manintheloopan aircraft motion/dynamic and aerodynamic/gravity model was established to calculate flight parameters and expression of rotation quaternion in real timeand simulating module was designed based on Matlab/Simulink conditions.A 3D virtual reality space based on VRML was built up by Vrealm Builder for simulating visualization.Operating deviceflight control module and 3D virtual space were integrated into a complete simulating system by Simulink 3D Animation Blockset.Results of simulation indicate that the system can realize the flight visualization simulation with high fidelity of scene viewsupply accurate and realtime flight parameter outputand implement flight under the control instruction.The system has good maneuverabilityversatility and scalability..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 68 (2013)
A New Method for Identifying Radar Emitter Based on SelfDistilled Pulse Sequence Pattern
LIU Kai, WANG Jiegui, and MENG Xianghao
In order to identify the radar emitter rapidly and reduce the processing stepsa new method based on selfdistilled pulse sequence pattern was proposed.The Pulse Sequence Pattern (PSP) was directly distilled from the full of pulse dataand then was used for matching and identification.This method does not need a procesIn order to identify the radar emitter rapidly and reduce the processing stepsa new method based on selfdistilled pulse sequence pattern was proposed.The Pulse Sequence Pattern (PSP) was directly distilled from the full of pulse dataand then was used for matching and identification.This method does not need a process of feature extraction and the deinterleaving of the radar signal as the conventional method thus the processing is simplified and time for the processing is reduced.The simulation results show that the method has high recognition rate..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 73 (2013)
Controlling of MicroDeformable Mirror for Stabilizing Output of SolidState Laser
XU Zeshuai, YANG Yi, LAN Weihua, and DONG Tao
Passive coaxial spherical cavity is introduced by using a general matrix.In view of the thermallens effect in the cavity of solidstate laserthe closure conditions of thermal lens optical cavity was obtained by using symbolic operation of Matlab.The automatic closed thermal stable cavity model was establishedcombiniPassive coaxial spherical cavity is introduced by using a general matrix.In view of the thermallens effect in the cavity of solidstate laserthe closure conditions of thermal lens optical cavity was obtained by using symbolic operation of Matlab.The automatic closed thermal stable cavity model was establishedcombining the closure condition with the thermal lens effect model of optical cavity.The mirror curvature radius was changed adaptively by controlling the deformable mirror with the increase of pumping powerthus could make the output of resonant cavity of solidstate laser stable..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 77 (2013)
Analysis of FLASH TFFS Based on VxWorks
SHI Gaihui, WU Jing, and LI Bing
The FLASH memorizer is an important part of the embedded systemswhich has found wide application in engineering.It is very convenient for the users to use the FLASH memorizer by developing the FLASH file systemsuch as copyingdeleting and creating.The TFFS configuration of FLASH under VxWorks operation system is discThe FLASH memorizer is an important part of the embedded systemswhich has found wide application in engineering.It is very convenient for the users to use the FLASH memorizer by developing the FLASH file systemsuch as copyingdeleting and creating.The TFFS configuration of FLASH under VxWorks operation system is discussed in detail，and how to realize the file system on FLASH memorizer is presented by taking W78M32VP chip as an example for working out the practical problem that the file system can be not formatted..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 80 (2013)
Numerical Simulation on Temperature Fields of Nylon Materials of Slow Small Target Irradiated by Laser Beam
HAN Xiaofei, MENG Wen, LI Yunxia, and LI Da
To study the damage to composite material of lowslowand small target caused by laser irradiationa model of threedimensional transient temperature fields of the irradiated surface was investigated by using a finite element methodand numerical simulation was performed on temperature fields of nylon materials irradiaTo study the damage to composite material of lowslowand small target caused by laser irradiationa model of threedimensional transient temperature fields of the irradiated surface was investigated by using a finite element methodand numerical simulation was performed on temperature fields of nylon materials irradiated by a laser beam.The distribution of temperature field and ablation field at different time was obtained.The effect of irradiation time on material damage and ablation process was also analyzed.Furthermorethe influence of the beam distribution and spot radius to temperature fields was discussed..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 84 (2013)
A Passive Optical Athermalization Design of Middle Wavelength Infrared Optical System
CHEN Jianfa, WANG Helong, and LIU Xin
A method for passive optical athermalization design of middle wavelength infrared optical system with multiple lenses is introducedand an athermalized middle wavelength infrared dualFOV optical system was designed.The optical system contains a zoom objective system and a secondary imaging systemand adopts the technoA method for passive optical athermalization design of middle wavelength infrared optical system with multiple lenses is introducedand an athermalized middle wavelength infrared dualFOV optical system was designed.The optical system contains a zoom objective system and a secondary imaging systemand adopts the technology of passive athermalization optical design.The zoom function is achieved by moving a set of optical components (2 elements) axially.A passive athermalization optical design is presented by using crystal materials Si and Geand two aspherical surfaces.The results show that the infrared zoom optical system in the 4.5~5.1 μm wavelength possesses a compact structure100% cold shield efficiencyand better image quality in the temperature range from -60 ℃ to +70 ℃thereby the correctness and feasibility of the design method are proved..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 88 (2013)
SemanticOriented Distributed Interactive Modeling Method
YANG Wenbing, ZHU Yuanchang, DI Yanqiang, and FENG Shaochong
The distributed interactive modeling process requires a lot of staff participationthereby causes waste of resources and inefficiency for largescale simulation system.To solve the problem we proposed a semanticoriented distributed interactive modeling method.This method improves the current federation development proThe distributed interactive modeling process requires a lot of staff participationthereby causes waste of resources and inefficiency for largescale simulation system.To solve the problem we proposed a semanticoriented distributed interactive modeling method.This method improves the current federation development process of High Level Architecture (HLA)and introduces the concept of ontology and semantic mapping in it.The federation development process is divided into three subprocedures as domain ontology constructionsemantic mapping and code generation.A concrete example demonstrates the feasibility and effectiveness of the method..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 92 (2013)
Wavelet Transform Based MultiSensor Optimal Information Fusion
CAI Meng
The problem of multisensor information fusion was studied in timefrequency domainand a new optimal criteria weighted by scalars was proposed.Wavelet transform was introduced in multiscale signal filtering.The state vector and observed value were decomposed into multiscale signalsand the multiscale signals (incluThe problem of multisensor information fusion was studied in timefrequency domainand a new optimal criteria weighted by scalars was proposed.Wavelet transform was introduced in multiscale signal filtering.The state vector and observed value were decomposed into multiscale signalsand the multiscale signals (including approximate component and details) were updated.The local sensor estimation was fused via an optimal algorithm weighted by scalarsand timedomain state estimation was obtained through inverse transformation of wavelet.The method proposed can:1)complete multiscale filtering for the whole multisensor system;2)implement information fusion from the time domainand improve the estimation accuracy greatly;and 3)distribute fusion weights by scalarsthus only the computation of scalar weights is required and the calculation cost is reduced obviously.The simulation shows the effectiveness of the algorithm..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 97 (2013)
Design of an Operational Effectiveness Evaluation System for AirtoAir Missile System
LI Xiaoming, LI Na, DONG Shougui, and ZENG Litang
Operational effectiveness is the ultimate expression of system effectiveness under countermeasure conditionand the analysis and evaluation of operational effectiveness is the tallest level of missile system assessment.Considering the necessity of airtoair missile range testand the demand of operational training andOperational effectiveness is the ultimate expression of system effectiveness under countermeasure conditionand the analysis and evaluation of operational effectiveness is the tallest level of missile system assessment.Considering the necessity of airtoair missile range testand the demand of operational training and function improvement for airtoair missile in the futurethe contents and methods of operational effectiveness evaluation for airtoair missile are discussed.The design objectivesystem architecturemodel constitution and work procedure of the operational effectiveness evaluation system are presented.The operational effectiveness of airtoair missiles under different countermeasure conditions is given through simulation..
Electronics Optics & Control
- Publication Date: Dec. 17, 2013
- Vol. 20, Issue 12, 101 (2013)
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