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Electro-Optic Technology Application
Contents
2018
Volume: 33 Issue 6
17 Article(s)
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 1 (2018)
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[in Chinese]
.
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 1 (2018)
Get PDF
Research on Non-destructive Testing Technology and Application of Terahertz Wave
LIANG Da-chuan, and GUAN Song
Terahertz non-destructive testing technology is a more comprehensive technology, which is an important part of terahertz technology application, it involves different areas such as physics, material science, semiconductor technology, optoelectronics and super-conduction electronics. The imaging principle based on terah
Terahertz non-destructive testing technology is a more comprehensive technology, which is an important part of terahertz technology application, it involves different areas such as physics, material science, semiconductor technology, optoelectronics and super-conduction electronics. The imaging principle based on terahertz time-domain spectroscopy is introduced. And the principle and applications of typical terahertz non-destructive testing technology are introduced. The works of scholars in the area at home and abroad are introduces too..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 1 (2018)
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Development Concept of Intelligent Electro-optical Countermeasure Technology Framework
DING Yu, and LI Yu-hai
With the rapid development of artificial intelligence (AI)technology and the continuous advancement of military intelligence, the form of war is accelerating to information warfare. In order to actively respond to the challenges of new technologies and threats of new weapons and equipments, the application of AI techno
With the rapid development of artificial intelligence (AI)technology and the continuous advancement of military intelligence, the form of war is accelerating to information warfare. In order to actively respond to the challenges of new technologies and threats of new weapons and equipments, the application of AI technology in the field of electro-optical countermeasure makes electro-optical countermeasure have the ability of cognitive, greatly reduces the reaction time of countermeasures, and meets the needs of new and unknown threats. The application of AI in the field of electro-optical countermeasure is prospected from the aspects of development requirements, capability characteristics, typical applications abroad, and technical framework and development ideas..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 9 (2018)
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Ultrafast Terahertz Spectroscopy in Carrier Dynamics
ZHOU Jun-hu, and CHENG Xiang-ai
The development of novel semiconductors is the key point of future information industry and electrooptical industry. Exploring the basic physical mechanism of new materials is a necessary requirement for the next-generation optoelectronic devices. Time-resolved terahertz spectroscopy is a more powerful support for stud
The development of novel semiconductors is the key point of future information industry and electrooptical industry. Exploring the basic physical mechanism of new materials is a necessary requirement for the next-generation optoelectronic devices. Time-resolved terahertz spectroscopy is a more powerful support for studying the transient photo-response of semiconductors than terahertz time-domain spectroscopy technology. The principle and characteristics of optical-pumped terahertz probe technology are introduced. And the development trend of ultrafast terahertz spectroscopy in the field of material science will be demonstrated..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 14 (2018)
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Research on Pyrotechnic Jamming Technology for Infrared Imaging Guidance
LI Yong, JIANG Ping, and ZHAO Fei-yu
At present, infrared imaging guided missile technology has been widely used in military field, which detects small differences of radiation intensity or frequency between the target and the background, and forms the infrared images of the target and the background to distinguish the target from the background. Based on
At present, infrared imaging guided missile technology has been widely used in military field, which detects small differences of radiation intensity or frequency between the target and the background, and forms the infrared images of the target and the background to distinguish the target from the background. Based on the analysis of the principle, advantages and disadvantages of infrared imaging guidance, passive jamming technologies for infrared imaging guidance are discussed. And smoke jamming, special material infrared decoy jamming and strong light blinding technologies are imposed..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 19 (2018)
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Development Situation and Trend of High Energy Laser Countermeasure System
ZHANG Yan-xiu, WANG Bing, LEI Ping, MA Na, and WANG Juan-feng
High energy laser countermeasure systems are becoming an important part in the field of electronic countermeasures, which have wide application space in hard destruction field such as anti-missile, anti-satellite and anti-unmanned aerial vehicle (UAV). At first, the principles and development situations of high energy
High energy laser countermeasure systems are becoming an important part in the field of electronic countermeasures, which have wide application space in hard destruction field such as anti-missile, anti-satellite and anti-unmanned aerial vehicle (UAV). At first, the principles and development situations of high energy laser countermeasure technology are introduced. And then, the development courses and equipment research situations of the high energy laser weapons in foreign countries are discussed. At last, the development trends of the weapons are summarized..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 24 (2018)
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T-type Electro-optical Measuring Turntable Optical Axis Detector
ZHANG Shou-li
Aiming at a t-type electro-optical measuring turntable, several commonly used optical axis parallelism testing methods are compared, and an auxiliary equipment for optical axis detection with high precision and portability is designed to complete the optical axis parallelism between a camera and laser. The principle of
Aiming at a t-type electro-optical measuring turntable, several commonly used optical axis parallelism testing methods are compared, and an auxiliary equipment for optical axis detection with high precision and portability is designed to complete the optical axis parallelism between a camera and laser. The principle of the optical axis detector is introduced, the factors affecting the uncertainty of the detection is analyzed. And the all-reflecting kassegreen optical structure design is adopted to reduce the volume weight while removing the effect of wavelength on the accuracy of the detector. The optical axis detector has simple structure and high accuracy, and meets the requirements of field use..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 29 (2018)
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A New Characteristic Method of Visible Light Indoor Positioning System
CUI Zhao-hua, JIN Yong-chang, and ZOU De-jun
To overcome the bandwidth constraint and nonlinearity, at first, the differential pulse amplitude modulation (DAMP) method is used to lower the effect of bandwidth constraint on communication quality. And then, based on the analysis of channel characteristics of visible light communication, the modulation bandwidth con
To overcome the bandwidth constraint and nonlinearity, at first, the differential pulse amplitude modulation (DAMP) method is used to lower the effect of bandwidth constraint on communication quality. And then, based on the analysis of channel characteristics of visible light communication, the modulation bandwidth constraint and nonlinearity of light sources is compensated by pre-equalization and light filtering to improve the bandwidth and throughput. At last, the simulation experiment is performed by using the single laser source being consisted of four LED chips with 1.5 MHz bandwidth. Experimental results show that the total throughput of the system increases with the increasing of the number of LED chips and the transmitted modulation system achieves a LED modulation with high data rate..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 33 (2018)
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Design and Preparation Technology of 3D Eyeglasses Optical Thin Film
ZHANG Jin-bao, WANG Ming-hui, GENG Hao, SHI Cheng-bo, and SUN Ya-wei
3D eyeglasses are widely used in commercial cinema, medicine, shipping, aviation and other electro-optical information industry. The image color from chromatic aberration 3D eyeglasses such as red-blue, red-green, red-cyan will be seriously lost, and the images are distortional. 3D chromatic aberration eyeglasses desig
3D eyeglasses are widely used in commercial cinema, medicine, shipping, aviation and other electro-optical information industry. The image color from chromatic aberration 3D eyeglasses such as red-blue, red-green, red-cyan will be seriously lost, and the images are distortional. 3D chromatic aberration eyeglasses designed by optical thin films can greatly enhance the chromatic fidelity of images and make the images richer. By introducing the principle of chromatic aberration 3D eyeglasses and the interference characteristics of optical thin films, the spectral curves of 3D glasses are designed by Needle optimization algorithm. Compared with the Simplex algorithm of non-1/4 film heap series, the Needle algorithm has fewer layers and thinner thickness, which is more conducive to the realization of the process. The actual design spectra are prepared and spectral measured results are in good agreement with the design, such as Tave is more than 90% at 0.47~0.5 μm, 0.56~0.58 μm and 0.65~0.68μm, Tave is less than 10% at 0.42~0.46 μm, 0.52~0.55 μm, 0.6~0.64 μm and 0.7~0.74 μm. And the technology characteristic requirements of 3D glasses optical film are met..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 39 (2018)
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Research on Adaptive EEMD Denoising of CCD Output Signal for Laser Wavelength Measurement
ZHANG Kai
Some detection signals such as the laser ranging echo, radar echo and so on will be coupled with a lot of noise in the transmission process, resulting in a decrease of signal to noise rate (SNR). The wavelet transform method, derivative method, interpolation method, polynomial fitting algorithm are usually used to deno
Some detection signals such as the laser ranging echo, radar echo and so on will be coupled with a lot of noise in the transmission process, resulting in a decrease of signal to noise rate (SNR). The wavelet transform method, derivative method, interpolation method, polynomial fitting algorithm are usually used to denoise. The fast Fourier transform (FFT) accuracy being affected by the noise of CCD output signals in the experimental device for the laser wavelength measurement based on optical wedge interference has been studied, and then an adaptive ensemble empirical mode decomposition (EEMD) denoising model based on a special normalized index optimization is proposed. It’s shown that the experimental results for denoising of CCD output signals that the method can effectively improve the accuracy of the CCD signal denoising, simplify the denoising process and its operation difficulty..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 44 (2018)
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Research on Working Period Identification of Laser Guided Signal Code
TONG Zhong-cheng
A method for identifying the working period of laser guided signal code is proposed and simulated on the basis of the characteristics of the code and identification demands. The relation between the identifying probability and the number of the laser pulses is found by the analysis of identification procedure. Simulati
A method for identifying the working period of laser guided signal code is proposed and simulated on the basis of the characteristics of the code and identification demands. The relation between the identifying probability and the number of the laser pulses is found by the analysis of identification procedure. Simulation results show that the identifying probability can exceed 0.95 when 6 laser pulses are received, the identifying probability is unconcerned with the number of registers and the availability of the method is verified..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 49 (2018)
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Analysis of Super-resolution Imaging Technology Based on Compressive Sensing
BI Xiang-li, and XU Jia-nuo
Compressive sensing theory is applied to super-resolution imaging for the general sparsity of most images. Compressive sensing principle and simulation show that two dimensional image in transform domain has sparsity. The better are the sensing matrix characteristics, the better is the image reconstruction effect. Only
Compressive sensing theory is applied to super-resolution imaging for the general sparsity of most images. Compressive sensing principle and simulation show that two dimensional image in transform domain has sparsity. The better are the sensing matrix characteristics, the better is the image reconstruction effect. Only 30% measured value about traditional image’s is adopted by compressive sensing sampling, the image quality equal to that of traditional sampling is restored. Comparing with gradient projection sparsity reconstruction (GPSR) and GPSR+TV algorithms, the effect of super-resolution image reconstruction with alternating direction method of multipliers (ADM) algorithm is better. And an optical imaging system with prism reflective compressive code aperture is proposed based on 4f optical system, in which spatial light modulator (SLM) is used as coded template to modulate and compress target images. Four times super-resolution reconstruction effect than that of CCD is realized through developed ADM algorithm software based on total variation sparsity reconstruction. Traditional imaging problems such as low image resolution, high pressure data storage and slow data transmission are resolved by the compressive sensing imaging technology, which has great application potential..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 52 (2018)
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Conception of Simulation Structure of Electronic Penetration of Ballistic Missile
GAO Bo, and CHEN Da-jian
Electronic penetration technology is used to establish a simulation system during penetration combat process, taking the typical intercontinental ballistic missile as a prototype and the missile defense system as a combat target. The simulation deductions with and without countermeasure methods of ballistic missile pen
Electronic penetration technology is used to establish a simulation system during penetration combat process, taking the typical intercontinental ballistic missile as a prototype and the missile defense system as a combat target. The simulation deductions with and without countermeasure methods of ballistic missile penetration are completed, and the feasibility and effectiveness of the detailed jamming methods in ballistic missile penetration is verified, which provide data support for the using of penetration measures, the selection of jamming time and the optimal analysis of the main technical characteristics of the jamming equipment in the real war..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 57 (2018)
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Research on Semi-strapdown Stabilization Technology of Airborne Electro-optical Tracking and Pointing System
WU ZHUO-kun, and TONG XIN-gang
According to the stabilization of airborne electro-optical tracking and pointing system, the technical characteristics of the whole gyro stabilization and the semi-strapdown stabilization are analyzed and compared, and the principle of the semi-strapdown stabilization is described. According to the expression of the in
According to the stabilization of airborne electro-optical tracking and pointing system, the technical characteristics of the whole gyro stabilization and the semi-strapdown stabilization are analyzed and compared, and the principle of the semi-strapdown stabilization is described. According to the expression of the inertia-space angular velocity of the tracking and pointing frame under semi-strapdown stabilization, the main factors influencing the semi-strapdown stabilization are analyzed. The Butterworth second-order low-pass filter has been designed to decrease gyro noise. The mathematics model of the controlled object is built by frequency characteristic analysis and error prognosis methods. The pre-control part has been designed to correct encoder error and gyro data delay. And the simulation analysis performed. Experimental researches have been conducted by the prototype, and the results indicate that the stabilization precision of the semi-strapdown system can match that of the whole gyro stabilization system, which has stronger engineering application..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 62 (2018)
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Research on Measurement Technology of Alcohol Burner Flame Temperature Based on Spectral Emission
ZHAO Da-peng, MA Zhi-wei, and YUAN Zhong-cai
The flame temperature measurement is one of important operations in combustion process control. Based on the theory of molecular spectroscopy, spectral line intensity distribution of OH radicals in the electronic band of [A2∑+X2∏] for several rotational and vibrational temperatures under the condition of instrument bro
The flame temperature measurement is one of important operations in combustion process control. Based on the theory of molecular spectroscopy, spectral line intensity distribution of OH radicals in the electronic band of [A2∑+X2∏] for several rotational and vibrational temperatures under the condition of instrument broadening of 0.07 nm is calculated. Experiments to measure spectral emissions of flames generated by alcohol lamp are carried out with a grating spectrometer. Spectral emissions of OH radicals at certain height of flames are gained. Through comparative analysis of theoretical and experimental spectroscopy, it is found that combustion temperature of alcohol lamp flame at certain height is about 2 600 K. And experimental errors and their causes are analyzed..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 68 (2018)
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Research on Impact of Dynamic Environment on Radiation of MTV Infrared Decoy
DUAN Guo-wen, WU Gang, ZHANG Jing-yuan, and ZHAO Fei-yu
There is a big difference in radiation of MTV infrared decoys in dynamic and static environment. To acquire the combustion and radiation performances in application, the mechanism of static radiation, and the combustion models for MTV infrared decoys in dynamic and static environment are researched. And an experiment-b
There is a big difference in radiation of MTV infrared decoys in dynamic and static environment. To acquire the combustion and radiation performances in application, the mechanism of static radiation, and the combustion models for MTV infrared decoys in dynamic and static environment are researched. And an experiment-based calculation formula is acquired for the radiation performances of MTV infrared decoys in dynamic environment..
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Electro-Optic Technology Application
Publication Date: Jan. 01, 1900
Vol. 33, Issue 6, 71 (2018)
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