Journals >Electro-Optic Technology Application
Contents
2010
Volume: 25 Issue 5
23 Article(s)
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Research Article
Design of Smoke Jamming Effectiveness Evaluation System
TAN Wei, HE You-jin, and MAO Jian-ying
The evaluation of smoke jamming effectiveness is an important segment of smoke jamming tech-nology and smoke weapon tactical application.The function and makeup of the evaluation system was discussed, some key technologies such as imaging video tracking device, simulation of smoke jamming scene and evaluation methods oThe evaluation of smoke jamming effectiveness is an important segment of smoke jamming tech-nology and smoke weapon tactical application.The function and makeup of the evaluation system was discussed, some key technologies such as imaging video tracking device, simulation of smoke jamming scene and evaluation methods of smoke jamming effectiveness were analyzed.The design proposal was put forward..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 65 (2010)
[in Chinese]
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, -1 (2010)
Design of Ray Path Test System in Turntable
LIU Hai-ou, and WANG Jia-yi
The composition and function of turntable are described.The working principle of a bunch of par-allel light gathered on the focus when passing off-axis parabola was applied to design a test system to adjust the internal optical alignment precision for the turntable.The test equipment was used to directly observe the spThe composition and function of turntable are described.The working principle of a bunch of par-allel light gathered on the focus when passing off-axis parabola was applied to design a test system to adjust the internal optical alignment precision for the turntable.The test equipment was used to directly observe the spot displacement，and to make a position adjustment of a few slices of mirrors to reach the target accuracy.In order to reduce the test error of test system，the off-axis parabola on the focal plane of the defocus amount was strictly controlled，and the potential error of the system was analyzed..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 1 (2010)
Study on the Image Tracked by Mirror in Trajectory
SUN Shuai, and SONG Yu-gui
The speed and posture of moving targets are an important matter in range measurement, using mirror to solve the problem of short trajectory tracked by the fixed high-speed camera.According to the mov-ing discipline of projectile and relationship of imaging, the moving discipline of the mirror can be got, and so the eccThe speed and posture of moving targets are an important matter in range measurement, using mirror to solve the problem of short trajectory tracked by the fixed high-speed camera.According to the mov-ing discipline of projectile and relationship of imaging, the moving discipline of the mirror can be got, and so the eccentricity moment of the camera is zero any time.In addition there is another concern of motor and system re-quest to be considered.Finally this system can get a whole procedure of the flying projectile, the length of image is in the rang of1/5to3/5of the CCD length, the angle of tracking area can reach to 90°..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 3 (2010)
Study of Lighting System in Visual Chart Projector
LIU Hai-feng
Conventional lighting system used in visual chart projector have the disadvantage of high lamp-house temperature, high power, low projection lightness and asymmetry ray.To these traits, several kinds of il-lumination scheme were compared and analyzed according to the imaging theory in geometrical optics.And a new illumConventional lighting system used in visual chart projector have the disadvantage of high lamp-house temperature, high power, low projection lightness and asymmetry ray.To these traits, several kinds of il-lumination scheme were compared and analyzed according to the imaging theory in geometrical optics.And a new illuminating system has been designed.Moreover, the system lamp-house is a luminescence compounding of high lightness LED in this illuminate system with some excellence, for example, less glow, lower electric pow-er, higher lightness and more regular beam..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 6 (2010)
Application Research of DXF File in Laser Marking System
ZHANG Guo-qing
For high requirement of speed and reconstruction for laser marking system, an effective and easy use file format will play a crucial role.The DXF(drawing exchange format)document structure and the DXF's application in laser marking system based on DSP(digital signal processing)are introduced.The method of ana-lyzinFor high requirement of speed and reconstruction for laser marking system, an effective and easy use file format will play a crucial role.The DXF(drawing exchange format)document structure and the DXF's application in laser marking system based on DSP(digital signal processing)are introduced.The method of ana-lyzing DXF file is stated in details, and the advantages of DXF file in this system will be pointed out.Using the data exchange interface for DXF's secondary development can also make the system to achieve better graphics processing effects..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 8 (2010)
Research for Measuring the Energy Distribution Uniformity of Laser Parallel Light Curtain
LIU Xin-gang, LI Yang-jun, and GAO Jian
Laser parallel light curtain can be extensively used to measure the diameter of the object, the velocity and coordinate of the projectile, the density of projectile in target etc.The uneven distribution of light energy made timing er-ror, directly influencing the accuracy of measurement.The measurement of the uniformitLaser parallel light curtain can be extensively used to measure the diameter of the object, the velocity and coordinate of the projectile, the density of projectile in target etc.The uneven distribution of light energy made timing er-ror, directly influencing the accuracy of measurement.The measurement of the uniformity of light energy distribution mainly provides data preparation and theoretical basis for the study of larger screen and dense target, and improves the pre-cision of the curtain tests.The energy distribution of laser spot is introduced theoretically, the design principle of the laser parallel light curtain is explained, the experiment of measuring parallel light uniformity was completed, and the measure-ment data use of the origin software was analyzed.The experimental results are conformable to the theoretical analysis, the feasibility of the measurement method is proved..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 12 (2010)
Construction and Application of a New Type Platform For Infrared Signal Processing
HE Xi-jun, CHEN Hua-chu, and CHEN Xiao-dong
With the high speed progress of infrared detector technology, the Real-time processing of infrared signals meets a biggish challenge.When executing more complicated processing arithmetic, the Signal Process-ing Platform based on trad framework is hard to meet the demand of real-time processing in the infrared system wiWith the high speed progress of infrared detector technology, the Real-time processing of infrared signals meets a biggish challenge.When executing more complicated processing arithmetic, the Signal Process-ing Platform based on trad framework is hard to meet the demand of real-time processing in the infrared system with a detector which has more cells and higher frame speed.With the developing of General Processing Graphic Processing Unit(GPGPU), it provides the better platform for Real-time infrared signal processing.According to the characteristic of Real-time processing in the infrared system, a new type platform based on FPGA+CPU+GPU framework to process infrared signals was constructed and applied practically.The experiment results indi-cate that the platform is equal to the Real-time signal processing task of the infrared system in which the detector has more cells, higher frame speed, and more complicated arithmetic..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 15 (2010)
Calculation of Relationships between Housing Parameters and Radiant Intensity of Optical Switch Emitter
WENG Jian-hua
With the Ray-tracing technique, the variation of the radiant energy with the distance between the emitter and the receiving area was calculated.As the distance increases, the radiant energy radiated on the receiving area decreases.Besides, the variation of the radiant energy with the aperture width in the housing and tWith the Ray-tracing technique, the variation of the radiant energy with the distance between the emitter and the receiving area was calculated.As the distance increases, the radiant energy radiated on the receiving area decreases.Besides, the variation of the radiant energy with the aperture width in the housing and the receiving area was calculated as well.The results are helpful to understand the optical characteristics of the switch.Moreover, further calculations can provide useful references for the determination of the housing param-eters during the EO switch design..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 20 (2010)
Airborne High-speed Video Acquisition System Using CMOS Sensor Bases on FPGA
HOU Hong-lu, WANG Rong, and DU Juan
Based on the difference of image gathering and the transmission, a new approach of data acquisi-tion is proposed, which takes the CMOS digital image sensor as the camera electro-optic transform component.The high-speed video gathering system is designed with FPGA as core control chip, USB as transmission inter-face; CMBased on the difference of image gathering and the transmission, a new approach of data acquisi-tion is proposed, which takes the CMOS digital image sensor as the camera electro-optic transform component.The high-speed video gathering system is designed with FPGA as core control chip, USB as transmission inter-face; CMOSOV5620as image gathering chip.The system design structure was presented while each module hardware design method and the software flow were given.The test shows that this system is feasible..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 24 (2010)
Analysis of Fraunhofer Diffraction Field Distribution for One Dimensional Variable-Line Space Gratings
HUANG Zao-Shan, JIN Xue-mei, LI Xiao-long, OU Yang-min, and LV Xiao-xu
Two methods were proposed to deduce the distribution of the Fraunhofer diffraction field for one dimensional Variable-Line Space gratings(VLS gratings), including surposing the complex amplitude of the diffracted light by a narrow slit and strict integration of illustrating area of grating depended on the scalar theo-rTwo methods were proposed to deduce the distribution of the Fraunhofer diffraction field for one dimensional Variable-Line Space gratings(VLS gratings), including surposing the complex amplitude of the diffracted light by a narrow slit and strict integration of illustrating area of grating depended on the scalar theo-ry.It shows that both calculating results are nearly the same when the grating has similar slit widths of different periods.But when the VLS grating has variable slit widths, it represents obviously difference with the position and intensity of higher diffraction orders except the zero order.Examples are taken to analyze the distribution of diffraction field of VLS grating, which are also discussed by simulating with Matlab software.From the preced-ing discussion we can immediately draw a conclusion that strict integration depended on the scalar theory is more suitable for VLS grating to investigate its diffraction field distribution.Moreover, brief introduction was given about the ability of VLS gratings for displacement sensor and focusing wave, basing on the above analysis..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 29 (2010)
Design of 1000 mm Diameter Fresnel Lens For Collecting Solar Energy
YU Sui-xi, WU Han-ping, XIONG Yan-jian, LV Zhao-shun, and ZHOU Wei
Because of the low utilization of solar energy and the high cost of photovoltaic power, Fresnel lens were used to focus sunlight from the point of concentrator.On the basis of the analysis of the structure of Fres-nel lens, the evaluation indexes of the lens were put forward and a1000mm diameter Fresnel lens which can Because of the low utilization of solar energy and the high cost of photovoltaic power, Fresnel lens were used to focus sunlight from the point of concentrator.On the basis of the analysis of the structure of Fres-nel lens, the evaluation indexes of the lens were put forward and a1000mm diameter Fresnel lens which can meet the demands was designed, the location of the lens when it concentrates light was also discussed.The de-sign has a certain universal, which can be applied to other large diameter Fresnel lens design, it is important to promote the development of solar energy collection..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 35 (2010)
Optical Fiber Temperature Sensor
LEI Fei-peng, NING Ti-gang, ZHOU Qian, BI Chong-ying, CAO Yi, and WANG Hui
The principle and classification of the optical fiber temperature sensor are briefly introduced.The operating principle and development status of three typical optical fiber temperature sensors based on Fabry-Perot interference, Semiconductor absorption and Bragg grating are introduced, respectively.Moreover, the speciThe principle and classification of the optical fiber temperature sensor are briefly introduced.The operating principle and development status of three typical optical fiber temperature sensors based on Fabry-Perot interference, Semiconductor absorption and Bragg grating are introduced, respectively.Moreover, the specific mechanism, experimented devices and research results are presented and compared..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 39 (2010)
Research on Thermal Lens Effect of Grooved Laser Crystal
ZHAO Zhen-yu, and NIE Jin-song
The influence factors of the thermal effect of laser crystal were analyzed.Using the heat conduc-tive equation, the relationship between area of surface and thermal change of end face caused by the asymmetry distribution of inner temperature was deduced.The thermal distortion and thermal focus of common columni-form crThe influence factors of the thermal effect of laser crystal were analyzed.Using the heat conduc-tive equation, the relationship between area of surface and thermal change of end face caused by the asymmetry distribution of inner temperature was deduced.The thermal distortion and thermal focus of common columni-form crystal and grooved crystal were calculated, respectively.And the results indicate that the thermal effect of laser crystal can be effectually improved by using the grooved crystal..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 43 (2010)
Coupling of a Laser Diode to a Single-Mode Polarization-Maintaining Fiber
LIU Juan
An accurate method for coupling a laser diode(LD)to a single-mode polarization-maintaining fiber was proposed, the beam quality of the semiconductor laser was measured, and its collecting, collimating, forming and coupling into fiber were experimentally investigated.At the meantime, the positioning sensitivities of theAn accurate method for coupling a laser diode(LD)to a single-mode polarization-maintaining fiber was proposed, the beam quality of the semiconductor laser was measured, and its collecting, collimating, forming and coupling into fiber were experimentally investigated.At the meantime, the positioning sensitivities of the shaping system and the fiber were measured.The theoretic analysis of spherical surface lenticule optical fiber and laser diode coupling was made.The lens parameters, the coupling form and the influence of laser diode wave scattering on the coupling efficiency and characteristics were discussed.The computed results and experi-mental data of two practical coupling systems were given and compared to the theoretic calculated results.Fine-ly, the optimal parameter of the lenticule was obtained in combination with the experiment..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 46 (2010)
Simulation of Optical Communication Apparatus Based on the Comsol Software
ZANG Ke-kuan, SUN Xiao-hong, Li Da-hai, and LIU Guo-bin
The comsol software is used to simulate some integrated apparatus of the optical commuciaction such as photonic crystal fiber, waveguide, wave separater and filter.The result of simulation is very good.The advantages of photonic crystal devices can be more intuitively understood.It provides the useful information for tThe comsol software is used to simulate some integrated apparatus of the optical commuciaction such as photonic crystal fiber, waveguide, wave separater and filter.The result of simulation is very good.The advantages of photonic crystal devices can be more intuitively understood.It provides the useful information for the development of the apparatus of the optical commuciaction..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 51 (2010)
Design of Black-Body Cavity Transient High Temperature Sensor on Sapphire Fiber
LI Wei, HAO Xiao-jian, and ZHOU Han-chang
A sapphire fiber blackbody cavity transient high temperature sensor based on contact and contact-less integration are introduced.The blank-body cavity production and weak photoelectricity signal detection were analyzed.Finally, the testing results were also given.The experimental results show that after the new photo-eA sapphire fiber blackbody cavity transient high temperature sensor based on contact and contact-less integration are introduced.The blank-body cavity production and weak photoelectricity signal detection were analyzed.Finally, the testing results were also given.The experimental results show that after the new photo-electric detector and film material used, the temperature range and signal to noise ratio of the sensor was in-creased.The temperature sensor measuring range upper limit is greater than2000℃and the response time less than100ms.It can meet the temperature measurement required by the research and industrial production in some specific environment..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 54 (2010)
Design of Demodulating Circuit for Rayleigh Backscatter Signal
LIU Jing, QIAO Xue-guang, WEI Ting, GAO Hong, and FENG Hong-fei
Optical time domain reflectometer plays a very important role in the test of optical fiber system, how to improve its resolution and dynamic range has become a difficulty.In order to make the designed demodu-lation system to achieve the requirements for measuring accuracy and dynamic range, the Xilinx xc3s400and USB siOptical time domain reflectometer plays a very important role in the test of optical fiber system, how to improve its resolution and dynamic range has become a difficulty.In order to make the designed demodu-lation system to achieve the requirements for measuring accuracy and dynamic range, the Xilinx xc3s400and USB singlechip were adopted as the main core device, the functions such as A/D sampling and communications were completed respectively, A/D takes12150Mbps fast-sampling chips to accomplish the quantization of the measurement.Communications are realized in USB communication mode, in order to realize data collection and data transfer between PC.A data transfer rate reached over30M.In developing visual graphic interface PC complete data processing and results..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 58 (2010)
Application of Embedded SQLite in Inspection Instrument of Temperature and Humidity
LIAO Yi-Peng
The inspection instrument of temperature and humidity for Fluo-curing Barn was designed based on ARM and WinCE operation Platform with the small embedded database called SQLite3.The system struc-ture for the inspection instrument, the characteristic and the detailed process of porting in WinCE platform of SQLite3were iThe inspection instrument of temperature and humidity for Fluo-curing Barn was designed based on ARM and WinCE operation Platform with the small embedded database called SQLite3.The system struc-ture for the inspection instrument, the characteristic and the detailed process of porting in WinCE platform of SQLite3were introduced.The specific application of SQLite3database in the inspection instrument was ana-lyzed in detail.Experimental results show that the application of SQLite3achieved a good result, the tempera-ture and humidity data can be savable and manageable, and the technical curve of temperature and humidity dur-ing the process of drying tobacco was obtained which prepare the conditions for follow-up steps..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 61 (2010)
Finite-Difference Time-Domain Method of Dispersion Metal
WEN Ming, WANG Xin-lin, LUO Hu, ZHU Shi-jia, and YI Chen-lin
Surface plasmon polaritons(SPPs)have some characteristics such as optical field localization and local electromagnetic field enhancement and so on, so it exhibits extensive potential application in nano-photonics and microscopic detection and many other domains.The finite-difference time-domain(FDTD)numerical method caSurface plasmon polaritons(SPPs)have some characteristics such as optical field localization and local electromagnetic field enhancement and so on, so it exhibits extensive potential application in nano-photonics and microscopic detection and many other domains.The finite-difference time-domain(FDTD)numerical method can simulate the surface plasmon(SP)effect of laser interaction with the subwavelength metal mi-crostructure.The relative dielectric constant of metal is frequency dependent(dispersion).There are three dis-persion models about metal's relative dielectric constant in visible light and near-infrared wave band, such as Drude model, Lorentzs model and Drude-Lorentzs mode.In order to get FDTD iterative computation stable, FDTD numerical method should increase the subsidiary variable and the corresponding auxiliary difference equa-tion..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 70 (2010)
Study on the Evaluation of Combat Efficiency of Laser Reconnaissance Equipment
GAO Jun-guang, HAN Xin-wen, ZHAO wei, CHE Jin-xi, and YANG Bao-qing
Based on the working mechanism of laser reconnaissance equipment, the main factors effecting combat efficiency were analyzed.According to the method of systems analysis, by modeling the availability vec-tor A, reliability vector D and ability vector C of the system, the mathematic model to quantitatively evaluate the cBased on the working mechanism of laser reconnaissance equipment, the main factors effecting combat efficiency were analyzed.According to the method of systems analysis, by modeling the availability vec-tor A, reliability vector D and ability vector C of the system, the mathematic model to quantitatively evaluate the combat efficiency of laser reconnaissance equipment was established.Finally, the models was validated with an example..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 74 (2010)
Research on Image Guided Weapons Jamming Effect Evaluation Method
CONG Long-yang, QU Yu-bao, XU Hong, YANG Fan, and CAI Jun
The dividing basis of the image guided weapons jamming results grade was analyzed.The success-ful probability of jamming and the killed probability of the image guided weapons before and after being jammed were calculated, a jamming effect evaluation criterion for image guided weapons was presented, which can used to eThe dividing basis of the image guided weapons jamming results grade was analyzed.The success-ful probability of jamming and the killed probability of the image guided weapons before and after being jammed were calculated, a jamming effect evaluation criterion for image guided weapons was presented, which can used to evaluate the jamming effect on image guided weapon..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 77 (2010)
Analysis and Simulation of Steady-State Performance in Nonlinear Tracking-Differentiator
YANG Guang-da, and ZHOU You
Considering the problem that the nonlinear tracking-differentiators(NTD)cannot track all the in-put signals without error, the steady-state performance of the nonlinear tracking-differentiators in three different forms was discussed.The applicable scope of NTD was determined through analysis the characteristics of re-sConsidering the problem that the nonlinear tracking-differentiators(NTD)cannot track all the in-put signals without error, the steady-state performance of the nonlinear tracking-differentiators in three different forms was discussed.The applicable scope of NTD was determined through analysis the characteristics of re-strain function and steady-state error in typical input, and the deductive results were verified in simulation.The results show that the nonlinear tracking-differentiators are first-order indiscrimination systems which only can track the step signal without error..
Electro-Optic Technology Application
- Publication Date: Oct. 09, 2021
- Vol. 25, Issue 5, 80 (2010)
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