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A Fast Spatial Phase Unwrapping AlgorithmWith Suppressing Pull-Line Error as Far as Possible
ZHANG Ying, and CAO Yi-ping
Traditional line scanning spatial phase unwrapping algorithms can achieve rapid phase unwrapping,however,it is susceptible to pull-line error propagation caused by factors such as noise and defocusing,which can lead to reconstruction errors or even failure. In light of these challenges,this paper proposes a spatial phaTraditional line scanning spatial phase unwrapping algorithms can achieve rapid phase unwrapping,however,it is susceptible to pull-line error propagation caused by factors such as noise and defocusing,which can lead to reconstruction errors or even failure. In light of these challenges,this paper proposes a spatial phase unwrapping algorithm with suppressing pull-line error as far as possible. The proposed algorithm,built upon the principles of fringe projection profilometry,binarizes the obtained wrapped phase to generate a binary wrapped phase sequence,thereby mitigating the influence of phase thresholds on fringe orders. Furthermore,it employs multi-anchor point validation by forward-backward crossings of this sequence to locate fringe jump points and confirm the fringe order map. Finally,the unwrapping phase and object depth information are computed from the fringe order map and the original wrapped phase. Experimental results demonstrate the feasibility and effectiveness of this algorithm. Moreover,it inherits the high-speed phase unwrapping capabilities of traditional line scanning algorithms while achieving higher measurement accuracy and noise robustness..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 1 (2024)
A Geometric Model-Based Passive Localization Method Under Airborne Electro-Optics Platforms
MAJie, ZHANG Cheng, and FAN Xin-hui
In the modern military conflict,the optoelectronic countermeasure technology has been more and more widely used,and concealment is also an important part of the warplanes,which can not be ignored. Due to the launch of electromagnetic wave ranging is easy to leak their own position,single station passive or passive posiIn the modern military conflict,the optoelectronic countermeasure technology has been more and more widely used,and concealment is also an important part of the warplanes,which can not be ignored. Due to the launch of electromagnetic wave ranging is easy to leak their own position,single station passive or passive positioning technology has many advantages such as small size,good concealment and high mobility,so it has an important application prospect in modern war. In this paper,in accordance with the idea of positioning before ranging,from the perspective of single airborne passive positioning algorithm,the differences between the proposed method and the traditional passive ranging method in terms of solving speed and accuracy are compared and analyzed by establishing three kinds of geometrical models under the geodetic coordinate system. By modeling and designing the actual application scenarios of airborne targets,the two algorithms are respectively used to solve the effective return distance values after filtering the pitch angle at an altitude of 4 000 m and a solving frequency of 500 Hz. The experimental comparisons result in a significant reduction in the computational complexity of the proposed passive positioning algorithm compared with the traditional passive ranging methods,and an increase in the average solving time of about 56.91%,which greatly increases the frequency of solving the airborne targets and saves more computational resources at the same time. It greatly increases the frequency of on-board target solving,saves more computational resources,and also ensures the stability of positioning accuracy,which can meet the requirements of practical use..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 9 (2024)
An Absolute Phase Extraction Method Based on Normalized Modulation Demodulating
WANG Jian, CAO Yi-ping, and LI Xiao-shun
Conventional absolute phase extraction techniques typically require multiple frames of additional coded patterns to assist in fringe order recognition,reducing the effectiveness of the projection. Therefore,an absolute phase extraction method based on normalized modulation demodulating is proposed in this paper. FirstlConventional absolute phase extraction techniques typically require multiple frames of additional coded patterns to assist in fringe order recognition,reducing the effectiveness of the projection. Therefore,an absolute phase extraction method based on normalized modulation demodulating is proposed in this paper. Firstly,the space division multiplexing technology is used to establish a lookup table that specifies a unique code word sequence that corresponds one-to-one with the fringe order. Then,the phase-shifting sinusoidal fringes are used as carrier frequency fringes to directly modulate the code word to the amplitude intensity to form a space division multiplexing composite phase-shifting fringes. When the group of composite phase-shifting fringes is projected onto the measured object,both the wrapped phase and the modulation can be simultaneously demodulated from the captured composite deformed patterns. Normalization of the modulation can effectively suppress the influence of uneven reflectivity and demodulate the four grayscale codewords that can locate the fringe order,achieving absolute phase extraction without the need for any additional coding patterns. In order to improve the robustness of multi-level grayscale codeword extraction,the image morphology processing operations are utilized to segment the grayscale of the modulation,and a half-cycle connected domain codeword correction method is also proposed. The experimental results validate the feasibility and effectiveness of the proposed method..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 16 (2024)
An Aerial Calibration Method for Installation Error of Photoelectric Pod
TAN Ren-long
Aiming at the issue of complex operation caused by the need of specialized instruments for ground calibration of installation errors in traditional optoelectronic pods,which requires repeated adjustments,an airborne calibration method is proposed. In the process of carrier flight,by selecting the cooperative target witAiming at the issue of complex operation caused by the need of specialized instruments for ground calibration of installation errors in traditional optoelectronic pods,which requires repeated adjustments,an airborne calibration method is proposed. In the process of carrier flight,by selecting the cooperative target with known coordinates in the field of view for tracking,and using the data such as carrier position,carrier attitude,observation pointing angle of the photoelectric pod, and the position of the cooperative target,the real-time fitting solution of the installation error angle of the photoelectric pod can be carried out. This proposed method can greatly save the workload and improve the efficiency while ensuring the calibration accuracy..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 28 (2024)
Wavefront Aberration Measurement of Lenses Using Phase Measuring Deflectometry Based on Entrance Pupil Center of Camera Lens
ZHOU Si-yi, LI Da-hai, GE Ren-hao, and ZHANG Ze-kun
In order to achieve high-precision and efficient detection of the imaging quality of transmissive elements,a method for measuring wavefront aberration of lens to be tested based on the entrance pupil center of camera using phase measuring deflectometry (PMD) is proposed in this paper. The basic principles of PMD for waIn order to achieve high-precision and efficient detection of the imaging quality of transmissive elements,a method for measuring wavefront aberration of lens to be tested based on the entrance pupil center of camera using phase measuring deflectometry (PMD) is proposed in this paper. The basic principles of PMD for wavefront aberration measurement in both forward and reverse ray-tracing models based on the camera’s entrance pupil center are described. The simulation measurements of wavefront aberrations for a plano-convex lens and a telephoto lens are conducted using ZEMAX software respectively. The simulation results indicate a close agreement between the wavefront aberrations calculated through forward and reverse ray-tracing models, validating the feasibility of the proposed method. In experiments,the wavefront aberrations of a plano-convex lens and a custom-built telephoto lens are measured,and the measurement results are compared with those obtained from interferometer. The discrepancies between the proposed method and the interferometer are found to be RMS=46.7 nm,PV=92.3 nm for the plano-convex lens,and RMS=126.9 nm,PV=112.5 nm for the telephoto lens,respectively. The results demonstrate that the measurement outcomes of the proposed method agree well with those obtained from interferometer..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 35 (2024)
Research on the Measurement Method of External Ballistic Parameters Based on Acoustic and Optical Signal Fusion
ZHAO Yue, and CAI Rong-li
This paper first analyzes the significance of shock wave Mach angle in the study of supersonic flying objects and points out the shortcomings of testing methods for shock wave Mach angle in modern shooting range tests. A new measurement method for shock wave Mach angle,projectile velocity,and projectile flight distanceThis paper first analyzes the significance of shock wave Mach angle in the study of supersonic flying objects and points out the shortcomings of testing methods for shock wave Mach angle in modern shooting range tests. A new measurement method for shock wave Mach angle,projectile velocity,and projectile flight distance is proposed. By analyzing the time at which the shock wave is received by the shock-wave acoustic piezoelectric sensor and the time at which the supersonic flying projectile is obscured by the high-speed target detector,and combining the spatial information of the two detectors,a mathematical model for the external ballistic parameter testing system based on acoustic and optical dual signals is constructed. Simulation model analysis shows that the error of the projectile Mach angle based on the acoustic and optical dual signals is less than 0.6%. Experimental results show that for supersonic flying projectiles,the ballistic parameter measurement system based on acoustic and optical signal detection system has a high measurement accuracy..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 47 (2024)
3D Measurement of Complex Reflectance Ice Shapes Based on Polarization Imaging
WEI Zhen-dong, WANG Jie, WANG Qi-jiang, ZHU Si-jie, and WANG Ya-jun
Icing on the wings is an important potential danger for flight safety,the study of anti-de-icing is of great significance for the evaluation of aircraft power performance,safety assessment,etc.,thus the accurate measurement of the icing profile is the basis for the study of icing on the wings. Different from ordinary oIcing on the wings is an important potential danger for flight safety,the study of anti-de-icing is of great significance for the evaluation of aircraft power performance,safety assessment,etc.,thus the accurate measurement of the icing profile is the basis for the study of icing on the wings. Different from ordinary objects,the ice has more complex reflectivity,and the stray light of ice surface is more serious. The traditional method is difficult to accurately extract the centerline of the ice surface. Therefore,to solve the problem of stray light on the ice surface,a high-accuracy measurement method of ice shape with complex reflectance based on polarization imaging technique by using the polarization property is proposed. The original images captured by the polarization camera are separated and interpolated,and the maximal eigenvalues and their eigenvectors are selected pixel by pixel,fused into the optimal polarization information. Then the laser centerline based on Steger's algorithm to realize the 3D reconstruction of the ice shape is extracted. The experimental results show that the standard deviation of the measurement error is 0.123 7 mm for the flat plate-shaped ice surface,and the proposed method is able to effectively reconstruct the three-dimensional shape of the ice shape with complex reflectivity..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 56 (2024)
Machine Vision-Based Positional Movement Monitoring System for Radiation Therapy
WU Zu-wei, HUANG Shao-sheng, LIN Xian-jin, WANG Shao-feng, WANG Lei, and LIN Chun
A machine vision-based displacement monitoring system for radiotherapy is designed and implemented to address the patient’s body position movement during fractionated radiotherapy. The system places three cameras on the two sides of the radiotherapy table and the middle and upper part of the end of the bed,with active A machine vision-based displacement monitoring system for radiotherapy is designed and implemented to address the patient’s body position movement during fractionated radiotherapy. The system places three cameras on the two sides of the radiotherapy table and the middle and upper part of the end of the bed,with active illumination provided by infrared LEDs,to capture images during radiotherapy in real time. A normalized cross correlation-based template matching algorithm is used to track markers pre-positioned on both sides and in the middle of the patient’s body membrane in real time. Field experimental results show that the system has a measurement mean error of 0.008 mm and a standard deviation of 0.028 mm,and can be used for real-time monitoring of minute patient body movement during radiotherapy..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 64 (2024)
CG Image Detection Based on Generalized Center Difference Convolution and Spatial Layout Mechanism
ZHANG Ying, and ZHU Nan
A computer-generated image (CGI) detection network based on generalized center difference convolution (GCDC)and spatial layout mechanism(SLM)is proposed to meet the growing demand of computer-generated image detection technology in the fields of digital forensics and judicial expertise. Firstly,a correlation feature exA computer-generated image (CGI) detection network based on generalized center difference convolution (GCDC)and spatial layout mechanism(SLM)is proposed to meet the growing demand of computer-generated image detection technology in the fields of digital forensics and judicial expertise. Firstly,a correlation feature extraction module containing three parallel independent branches is designed. Next,the outputs of the three branches are concatenated and then fed into a channel attention mechanism submodule. Finally,five successive convolutional modules with spatial layout mechanism modules are utilized to learn higher level hierarchical representation for making decision. The detection accuracy on the SPL2018 and DSToK public datasets can reach 94.76% and 95.38%,which is 3.12% and 3.23% higher than the best comparison method in detecting generated images. The detection accuracy on the SPL2018 and DSToK public datasets can reach 94.76% and 95.38%,which is 3.12% and 3.23% higher than the best comparison method in detecting generated images. The ablation experiment verifies the contribution of each module in the network to the overall detection performance of the model. Finally,the robustness of the network to JPEG compression and additive noise is verified,and even for compressed images with a quality factor of 60,the detection accuracy can still reach over 84%..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 73 (2024)
Object Tracking Algorithm Based on Attention Fusion
JIANG Hui-feng, WANG Dong, and GAO Shan
In order to solve the problems of weak anti-interference ability and poor robustness of the current target tracking algorithm based on Siamese network,a tracking algorithm which uses channel and spatial attention fusion based on SiamCAR is proposed. The improved efficient channel attention module and spatial attention In order to solve the problems of weak anti-interference ability and poor robustness of the current target tracking algorithm based on Siamese network,a tracking algorithm which uses channel and spatial attention fusion based on SiamCAR is proposed. The improved efficient channel attention module and spatial attention module are cascaded between the feature extraction subnetwork and the classification regression subnetwork,so as to strengthen the network’s attention to the important channel features and location features in the response map after cross-correlation,and suppress the unimportant feature information. On OTB100,the success rate and accuracy of the proposed algorithm are improved by 3.1% and 2.8% compared with SiamCAR under the challenge of background clutter,respectively. And the robustness and expected average overlap rate of the proposed algorithm are increased by 4.9% and 2.2% respectively compared with SiamCAR in VOT2018. Experimental results show that the proposed algorithm enhances the robustness of the tracker and improves the tracking effect of the tracker in complex scenes..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 83 (2024)
Pulse Rate Measurement Method Based on Amplitude and Phase Difference Criterion Using Rife Algorithm
LI Yi, WANG Feng-sen, Lü Heng, ZHU Tao, ZHU Jia-bing, and LIU Cai-cai
Aiming at the problem of low pulse rate measurement accuracy of photoplethysmography in low perfusion,by analyzing the characteristics of FFT amplitude and phase difference,a pulse rate measurement method based on amplitude and phase difference criterion by using Rife algorithm is proposed. This method is based on the Aiming at the problem of low pulse rate measurement accuracy of photoplethysmography in low perfusion,by analyzing the characteristics of FFT amplitude and phase difference,a pulse rate measurement method based on amplitude and phase difference criterion by using Rife algorithm is proposed. This method is based on the robustness of the Rife algorithm in the adjacent frequency center area,and uses a new criterion to process the frequency shift of the signal,so as to obtain a higher pulse rate measurement accuracy. The established pulse wave model is simulated,and the results show that under the condition of signal-to-noise ratio of -14 dB,the performance of the proposed method is equivalent to that of the I-Rife algorithm,and the correction direction misjudgment rate is reduced by about 15% compared with the Rife algorithm. Under the condition that the number of points is in the order of magnitude,the proposed method reduces the calculation amount by more than 25% compared with the I-Rife algorithm. At the same time,the pulse wave signal is used for experiments,and the results show that the proposed method has high measurement accuracy and stability. The new measurement method has higher measurement accuracy and provides a new way of thinking for the measurement of human pulse rate..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 92 (2024)
Study on Degradation Mechanism of Energy-Supplied Laser in Electronic Current Transformer
LOU Gang-jie, HUANG Jun-chang, and XIA Li
The power supply laser in electronic current transformers is a semiconductor device that supplies energy to the remote module. In order to solve the problem of frequent failures,it is necessary to study its degradation mechanism in order to provide feasible ideas for improving device reliability. A comprehensive testinThe power supply laser in electronic current transformers is a semiconductor device that supplies energy to the remote module. In order to solve the problem of frequent failures,it is necessary to study its degradation mechanism in order to provide feasible ideas for improving device reliability. A comprehensive testing system for the external characteristics of semiconductor lasers is designed. By using a constant temperature heating box and a vibration table,the PIV curve,wavelength and other external characteristic parameters of the laser can be measured at different temperatures and vibrations. Through correlation analysis,the impact mechanism between the key parameters of slow degradation and environmental sensitive parameters is demonstrated. Secondly,the failure characterization of the faulty optical chip is carried out to determine the degradation mechanism of the power supply laser. Finally,exponential fitting is performed on the optical power of lasers with different degrees of degradation to obtain an expected lifespan of 127 438 hours under operating conditions,and maintenance improvement measures are proposed. The research results show that the slope efficiency of the degraded laser changes significantly up to 7.99%,and the threshold current changes by 4.98%. The two parameters are strongly correlated with laser degradation. The main reason for chip degradation and even failure is that the damage of the cavity facial mask layer continues to intensify,leading to optical catastrophes on the cavity surface..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 100 (2024)
Propagation Characteristics of Multiple Hermite-Gaussian Sub Beams
LUO Jia-wen, LI Ya-qing, REN Yu-hang, and ZHANG Chen
In this paper,the Laguerre-Gaussian vortex beam is decomposed into multiple Hermite-Gaussian sub beams based on the interconversion relationship between the Laguerre-Gaussian and Hermite-Gaussian modes,and the intensity distribution of the mode conversion relationship is given. Then,using the Huygens-Fresnel principle,In this paper,the Laguerre-Gaussian vortex beam is decomposed into multiple Hermite-Gaussian sub beams based on the interconversion relationship between the Laguerre-Gaussian and Hermite-Gaussian modes,and the intensity distribution of the mode conversion relationship is given. Then,using the Huygens-Fresnel principle,an expression for the field distribution at the receiving surface of multiple Hermite-Gaussian sub beams propagated in vacuum under non-parallelaxis conditions is derived. The intensity and phase distributions of multiple Hermite-Gaussian sub beams with different topological charges and distances during vacuum transmission are investigated using numerical analysis. The results show that the multiple Hermite-Gaussian sub beams have a high light intensity energy concentration in the main fan-site region in the short distance and it can be used for precise optical manipulation. The isophase line of the sub beams field changes from a straight line to a smooth arc as the propagation distance increases. For long-distance propagation,the phase variation of the non-parallel-axis approximation multiple Hermite-Gaussian sub beams is much smaller than the phase distribution of the parallel-axis approximation Laguerre-Gaussian beam. It can be seen that the non-parallel-axis approximation condition of the multiple Hermite-Gaussian sub beams is more suitable for long-distance transmission. The results in this paper can provide a theoretical basis for the propagation of Laguerre-Gaussian vortex beams with high topological charge and wide divergence angle..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 107 (2024)
Comparison of Image Transmission Characteristics in OOK/QPSK Modulation Modes in Laser Communication
LI Di-shui
Aiming at the current explosive growth of information and the higher demand for communication channel capacity,taking image transmission as an example,the transmission results of images transmitted through additive Gaussian noise channel and Rician channel under two common modulation methods in laser communication,OOK Aiming at the current explosive growth of information and the higher demand for communication channel capacity,taking image transmission as an example,the transmission results of images transmitted through additive Gaussian noise channel and Rician channel under two common modulation methods in laser communication,OOK modulation and QPSK modulation,are simulated and compared in MATLAB software. At the same time,the error rate curves under two modulation methods are also compared. The simulation results show that regardless of the modulation method,the received image will significantly deteriorate with the increase of noise,but the degradation speed of additive Gaussian channel is slower than that of Rice channel. Under the same channel conditions,the degradation of images after QPSK modulation is better than that of OOK modulation. The comparison of error rates shows that the QPSK modulation method has a significantly better error rate than OOK modulation. Through the simulation results,it is concluded that QPSK modulation has its unique advantages over OOK modulation in noise environment,which provides a reference for the selection of modulation methods in laser communication systems..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 114 (2024)
Analysis of Infrared Radiation Characteristics of Combustion Flames
LIAO Peng-hao, WANG Yu-qin, LI Jia-wen, and ZHANG Rong-zhu
When detecting flame targets formed by combustion,the imaging effects vary significantly in different infrared bands due to their different radiation characteristics. The infrared radiation characteristics in the near infrared(0.9~1.7 μm), mid-infrared(3.8~4.7 μm),and far-infrared(7.5~13 μm)wavelength bands are analyzeWhen detecting flame targets formed by combustion,the imaging effects vary significantly in different infrared bands due to their different radiation characteristics. The infrared radiation characteristics in the near infrared(0.9~1.7 μm), mid-infrared(3.8~4.7 μm),and far-infrared(7.5~13 μm)wavelength bands are analyzed by combining simulation and experiment using a gun flame as the research object. From the gas radiation theory,the infrared radiation characteristics of the spray flame in three bands of 0.9~1.7 μm,3.8~4.7 μm,and 7.5~13 μm are calculated and compared according to the radiative transfer equation. Through radiation imaging experiments,the radiation image information of the response band is collected and compared with the simulation calculation results. The results show that about 10 000 target pixels of mid-wave infrared imaging of the flame at 640×512 resolution contain the most amount of information and its infrared radiation intensity is the largest,about 7 000 effective target pixels of long-wave infrared,but its infrared radiation distribution is the widest and least affected by the environment,and about 3 400 pixels of near-infrared imaging. It provides a basis for the detection and identification of various types of power targets as well as image fusion and information enhancement..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 122 (2024)
Design of Color Recovery Filters for Visible Short-Wave Infrared Imaging Systems
PANG Jia-yu, HAN Jun, and ZHANG Yan
Aiming at the problem of color information loss in the visible light bands and grayscale imaging in the current 0.40~2.50 μm wide spectral response imaging system,filters are designed and fabricated for all-weather,visible light color recovery,and short-wave infrared (SWIR) false color imaging. Using Essential Macleod Aiming at the problem of color information loss in the visible light bands and grayscale imaging in the current 0.40~2.50 μm wide spectral response imaging system,filters are designed and fabricated for all-weather,visible light color recovery,and short-wave infrared (SWIR) false color imaging. Using Essential Macleod film design software,three schemes are designed for parameter and performance comparison,and ultimately,a two-stage cutoff band based on the short-wave pass film system is used to complete the design of blue(B)+ SWIR,green(G)+ SWIR,and red(R)+ SWIR negative filter film systems. A long-wave pass film system is used to achieve a 0.42~2.50 μm passband film design. The combination of the four filters is prepared on a quartz glass JGS-1 substrate using Ta2O5 and SiO2 as high and low refractive index materials. The average transmission of the passband is measured to be greater than 93.6%,and the difference in average transmission of the passband is less than 1.6%. Finally,the prepared filter is used for photography and calculation to verify the development scheme of this article. The measurement results have reference value for further research on wide spectral color imaging technology..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 131 (2024)
A Low-Power,Miniaturized Short-Wave Infrared Imaging Circuit Design
WANG Rui, HONG Pu, GONGWen-feng, HU Zhi-qiang, CHEN Zhou, and ZHU Jun-wen
Short-wave infrared(SWIR),which combines the imaging advantages of visible light and thermal infrared (TIR),has achieved rapid development in recent years. Existing short-wave infrared cameras are mostly used in airborne or vehicle platforms,which can track and identify fast-moving targets,but there are problems such aShort-wave infrared(SWIR),which combines the imaging advantages of visible light and thermal infrared (TIR),has achieved rapid development in recent years. Existing short-wave infrared cameras are mostly used in airborne or vehicle platforms,which can track and identify fast-moving targets,but there are problems such as larger size and weight,higher power consumption and cost,which limits the promotion of them in the civilian direction. Aiming at this problem,a low-power,low-cost,miniaturized short-wave infrared imaging component solution is proposed to reduce the frame rate to streamline the signal processing architecture. The domestic low-power Field-Programmable Gate Array chip is selected. The power supply efficiency is improved. Under the premise of guaranteeing the signal-to-noise ratio,the single-board area is reduced to 38 mm×38 mm,the power consumption is 2.8 W under normal working condition,which significantly optimizes the size and power consumption of the short-wave infrared camera,reduces the loading requirements,and plays a certain role in promoting the civil direction..
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 140 (2024)
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OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 149 (2024)
[in Chinese]
OPTICS & OPTOELECTRONIC TECHNOLOGY
- Publication Date: Jun. 27, 2024
- Vol. 22, Issue 2, 1 (2024)