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Dynamic infrared scene simulation using grayscale modulation of digital micro-mirror device 被引量:7
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作者 Zhang Kai Huang Yong +1 位作者 Yan Jie Sun Li 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第2期394-400,共7页
Dynamic infrared scene simulation is for discovering and solving the problems encountered in designing, developing and manufacturing infrared imaging guidance weapons. The infrared scene simulation is explored by usin... Dynamic infrared scene simulation is for discovering and solving the problems encountered in designing, developing and manufacturing infrared imaging guidance weapons. The infrared scene simulation is explored by using the digital grayscale modulation method. The infrared image modulation model of a digital micro-mirror device (DMD) is established and then the infrared scene simulator prototype which is based on DMD grayscale modulation is developed. To evaluate its main parameters such as resolution, contrast, minimum temperature difference, gray scale, various DMD subsystems such as signal decoding, image normalization, synchronization drive, pulse width modulation (PWM) and DMD chips are designed. The infrared scene simulator is tested on a certain infrared missile seeker. The test results show preliminarily that the infrared scene simulator has high gray scale, small geometrical distortion and highly resolvable imaging resolution and contrast and yields high-fidelity images, thus being able to meet the requirements for the infrared scene simulation inside a laboratory. 展开更多
关键词 Digital grayscale modulation Digital micro-mirror device Gray scale Image processing Infrared scene simulation MODELS Pulse width modulation
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Seabed scene simulation and its realization in extending Vega 被引量:3
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作者 Zhi-ming Song Feng-ju Kang Kai Tang and Yan-jun Chu 《Journal of Marine Science and Application》 2003年第2期40-45,共6页
Realistic simulation of underwater scene is always difficult because of the special and complex vision effects in underwater space. Seabed is an important part of underwater environment. This paper describes the metho... Realistic simulation of underwater scene is always difficult because of the special and complex vision effects in underwater space. Seabed is an important part of underwater environment. This paper describes the methods for seabed scene simulation based on OpenGL. It includes construction of fluctuant terrain based on the random sinusoidal algorithm, simulation of seabed flicker effect by means of circular texture mapping and generation of turbidity effect by using fog techniques. For the application based on the leading high level 3D development environment - Vega, underwater scene simulation is still a difficulty since there is no module for it. Rased on the analysis of Vega software and the research on seabed scene simulation methods, a Vega extending module named 'Underwater Space' was created through developing module class and extending lynx interface. The module class was designed through developing DLL written in C + + . The Lynx was extended through developing keyword configure file, GUI configure file and lynx plug-in DLL. The problem that Vega can't simulate underwater space, is elementarily resolved. The results show that this module is efficient, easy using, and the seabed scene images are vivid. 展开更多
关键词 scene simulation SEABED OpenGL Vega module circular texture FOG FLICKER TURBIDITY
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Modeling of Irregular Structures in Scene Simulation Based on Creator and 3dsmax 被引量:2
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作者 陈施能 徐利梅 李辉 《Journal of Electronic Science and Technology of China》 2006年第2期187-191,共5页
Creating proper 3D models plays an important pole in the development of scene simulation system based on multigen creator and Vega software. However, it is very difficult to construct complex structures by multigen cr... Creating proper 3D models plays an important pole in the development of scene simulation system based on multigen creator and Vega software. However, it is very difficult to construct complex structures by multigen creator. In this paper, an approach is proposed which is utilizing 3dsmax as assistant modeling software. 3D models developed in 3dsmax could be saved in 3ds format and then imported into multigen creator software. The models are revised and then saved in fit format by creator. For reducing model's data, simplification strategy is proposed. The problem of constructing complex models in creator is solved smoothly. In the development of digital rocket simulation project, the models constructed by this method have good visual effect, small size, and could be driven by Vega correctly. 展开更多
关键词 scene simulation MODELING multigen creator 3dsmax
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An Online English Course Teaching Model Based on Scene Simulation 被引量:1
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作者 DAI Huili 《International English Education Research》 2018年第1期13-16,共4页
In order to improve the English online courses teaching scene adaptability, optimize the online English teaching mode, improve the quality of English teaching, an English online course teaching platform is proposed ba... In order to improve the English online courses teaching scene adaptability, optimize the online English teaching mode, improve the quality of English teaching, an English online course teaching platform is proposed based on scene simulation. B/S client communication protocol is constructed in network transport layer, and the scene simulation model of English Online Course Teaching is established, online English teaching platform designed in this paper is constructed based on the sensing layer, network layer and application layer. A data processing center is constructed in the B/S structure and the network environment, Open Core kernel is used to realize the optimization of teaching model of English online courses, improve the teaching platform of online courses, and improve the scene adaptation ability. The test results show that the platform for online English teaching has better independent learning ability, the effectiveness of online English course teaching is better, test objects have higher satisfaction with English Online Course Teaching. 展开更多
关键词 scene simulation ENGLISH Online course teaching Platform design
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UAV-TISP:A simulation platform for collaborative task training and algorithm development in multirotor UAV clusters
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作者 Zhi-Bin Xie Hong-Ying Zhang +4 位作者 Xiu-Qin Cheng Ze-Kun Wang Xiao-Long Wang Kai Xi Qiang Guo 《Journal of Electronic Science and Technology》 2025年第4期65-79,共15页
To fulfill the training requirements for the daily operations of multirotor unmanned aerial vehicles(UAVs)clusters,a UAV cluster collaborative task integrated simulation platform(UAV-TISP)was developed.The platform in... To fulfill the training requirements for the daily operations of multirotor unmanned aerial vehicles(UAVs)clusters,a UAV cluster collaborative task integrated simulation platform(UAV-TISP)was developed.The platform integrates a suite of hardware and software to simulate a range of collaborative UAV cluster operation scenarios.It features modules for collaborative task planning,UAV cluster simulations,and tactical monitoring.The platform significantly reduces training costs by eliminating physical drone dependencies while offering a flexible environment for testing swarm algorithms.UAV-TISP supports both individual UAV and swarm operations,incorporating high-fidelity flight dynamics,real-time communication via user datagram protocol(UDP),and collision avoidance strategies.Utilizing the OSGEarth engine,it enables dynamic 3D environment visualization and scenario customization.Three key task scenarios-route flight,formation reconstruction,and formation transformation-were tested to validate the platform’s efficacy.Results demonstrated robust formation maintenance,adaptive collision avoidance,and seamless task execution.Comparative analysis with Gazebo Sim revealed lower trajectory deviations in UAV-TISP,highlighting its superior accuracy in simulating real-world flight dynamics.Future work will focus on enhancing scalability for diverse UAV models,optimizing swarm networking under communication constraints,and expanding mission scenarios.UAV-TISP serves as a versatile tool for both operational training and advanced algorithm development in UAV cluster applications. 展开更多
关键词 Mission planning Multi-rotor UAV cluster scene visualization simulation platform
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Infrared image simulation of ground maneuver target and scene
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作者 穆成坡 彭明松 +2 位作者 高翔 张睿恒 董清先 《Journal of Beijing Institute of Technology》 EI CAS 2016年第2期247-253,共7页
Infrared scene simulation has extensive applications in military and civil fields. Based on a certain experimental environment,object-oriented graphics rendering engine( OGRE) is utilized to simulate a real three-di... Infrared scene simulation has extensive applications in military and civil fields. Based on a certain experimental environment,object-oriented graphics rendering engine( OGRE) is utilized to simulate a real three-dimensional infrared complex scene. First,the target radiation of each part is calculated based on our experimental data. Then through the analysis of the radiation characteristics of targets and related material,an infrared texture library is established and the 3ds Max software is applied to establish an infrared radiation model.Finally,a real complex infrared scene is created by using the OGRE engine image rendering technology and graphic processing unit( GPU) programmable pipeline technology. The results show that the simulation images are very similar to real images and are good supplements to real data. 展开更多
关键词 maneuver target target scene image simulation infrared image object-orientedgraphics rendering engine (OGRE)
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Analysis on the Effect of Scene Simulation Teaching Method in Surgical Nursing Training
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作者 HUANGRuilan 《外文科技期刊数据库(文摘版)医药卫生》 2022年第4期026-029,共4页
Objective: to observe the effectiveness of scene simulation teaching method in surgical nursing practice. Methods: in September of 1950s, the residents of our hospital were randomly divided into two groups. The contro... Objective: to observe the effectiveness of scene simulation teaching method in surgical nursing practice. Methods: in September of 1950s, the residents of our hospital were randomly divided into two groups. The control group (n30) used traditional teaching method, while the research group (n30) used simulated situational teaching method. Results: the theoretical score of the research group was (87.58-5.78) and that of the control group was (73.12-4.86). The scores of professional skills and comprehensive accomplishment of the research group were higher than those of the control group, with statistical significance (p 0.05). The satisfaction of the study group and the control group was 96.7% and 73.3% respectively, with significant difference between the two groups (p 0.05). Conclusion: scene simulation teaching method in surgical nursing practice can effectively improve students assessment results, help students to master the corresponding nursing skills, and has the value of popularization and application. 展开更多
关键词 nursing interns practical training assessment results scene simulation teaching method
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Comparison of the Feasible Schemes for HT-7U Assembly Simulation
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作者 廖祝华 刘晓平 《Plasma Science and Technology》 SCIE EI CAS CSCD 2003年第6期2027-2034,共8页
The whole superconducting HT-7U Tokamak is a high-cost and large-scale complicated device. The assembly requirement of HT-7U device is arduous and strict. At present, there have been no guiding principle for the assem... The whole superconducting HT-7U Tokamak is a high-cost and large-scale complicated device. The assembly requirement of HT-7U device is arduous and strict. At present, there have been no guiding principle for the assembly of the device, but assembly simulation can help the engineer plan and make decision by an intuitional and visual way before its actual assembly. The problem is that which scheme is most suitable should be solved primarily. From current research situation and technology progress of assembly simulation, this paper explained and analyzed four kinds of technological schemes of assembly simulation in common use. Finally, we got the most feasible scheme that was suitable for HT-7U assembly simulation by comparing their technological issues and difficult points of simulation among the four kinds of feasible schemes. 展开更多
关键词 assembly simulation virtual reality visual assembly design environment scene graph WEB3D
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Development of driver-vehicle-road closed-loop semi-physical simulation system
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作者 罗勇 ZHAO Xue +1 位作者 CAO Yu-feng XIE Xiao-hong 《Journal of Chongqing University》 CAS 2017年第2期79-86,共8页
As hybrid vehicles introduced the motor, the vehicle structure has a significant change in the power matching. A driver-vehicle-road closed-loop semi-physical simulation system, which makes real driving parts together... As hybrid vehicles introduced the motor, the vehicle structure has a significant change in the power matching. A driver-vehicle-road closed-loop semi-physical simulation system, which makes real driving parts together with the simulation car, will bring convenience to the new car design. We used the computer software to simulate the road with a slope, curve and some other features based on the actual road condition, and analyzed the whole road scene in addition to geometry and physical characteristics. Analyzing and constructing the vehicle dynamics basic template, appropriate changes to the template can obtain the desired vehicle dynamics model with an external device to control the model vehicle. It combined the physical operation system with visual display, which gave us real driving feelings and increased the vehicle design predictive accuracy. 展开更多
关键词 HWIL drive simulator road scene vehicle dynamics
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Simulation Research on Operation of Union Purchase System in Navigation Simulator
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作者 FAN hang YANG Shenhua +1 位作者 SUO Yongfeng ZHENG Minjie 《Journal of Shanghai Jiaotong university(Science)》 EI 2020年第5期606-614,共9页
Navigation is the only way to develop and utilize marine resources,while the promotion of seafarers1 quality is the basic force of navigation,so navigation simulator plays an important role in modern navigation educat... Navigation is the only way to develop and utilize marine resources,while the promotion of seafarers1 quality is the basic force of navigation,so navigation simulator plays an important role in modern navigation education.The simulation research on the operation of the union purchase is important to improve the special operation training of the actual cargo handling of the union purchase.On the basis of the Cartesian coordinate system transformation algorithm,the algorithm model of the union purchase operation is constructed.On the basis of three-dimensional(3D)rendering engine technology of open scene graph(OSG),the algorithm model of finding the space coordinates of the cargo point is established.The model of catenary equation is used to optimize the scene appearance of the cargo wire.By combination of QT channel signal mechanism and OSG,the simulation interaction of the union purchase operating system is realized.By acquiring the 3D coordinate values of each point,we fit the trajectories of each point in the operation and compare the trajectories.The results show that the model has high interactivity and small error.The comparison of the states of the cargo wire before and after optimization shows that the optimized wire is more realistic and the high fidelity meets the needs of operational training and simulation systems. 展开更多
关键词 navigation simulator union purchase coordinate system transformation open scene graph(OSG) catenary equation
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Sparsity-based efficient simulation of cluster targets electromagnetic scattering
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作者 TIAN Yuguang LIU Yixin +3 位作者 CHEN Xuan CHEN Penghui WANG Jun CHEN Junwen 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2023年第2期299-306,共8页
An efficient and real-time simulation method is proposed for the dynamic electromagnetic characteristics of cluster targets to meet the requirements of engineering practical applications.First,the coordinate transform... An efficient and real-time simulation method is proposed for the dynamic electromagnetic characteristics of cluster targets to meet the requirements of engineering practical applications.First,the coordinate transformation method is used to establish a geometric model of the observation scene,which is described by the azimuth angles and elevation angles of the radar in the target reference frame and the attitude angles of the target in the radar reference frame.Then,an approach for dynamic electromagnetic scattering simulation is proposed.Finally,a fast-computing method based on sparsity in the time domain,space domain,and frequency domain is proposed.The method analyzes the sparsity-based dynamic scattering characteristic of the typical cluster targets.The error between the sparsity-based method and the benchmark is small,proving the effectiveness of the proposed method. 展开更多
关键词 geometric model of the observation scene dynamic electromagnetic scattering simulation sparsity-based method
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Practice Research of MDT Combined with Scenario Simulation Teaching Mode in the Teaching of Intensive Care Medicine Residents
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作者 LIU Xi CEN Chaoqun +1 位作者 YAN Shanshan LIU Jingjing 《外文科技期刊数据库(文摘版)教育科学》 2021年第11期063-065,共5页
Objective: explore the significance of MDT combined with scenario simulation teaching in the training and teaching of intensive care medicine residents. Method: experimental control method was used in this study. Eigh... Objective: explore the significance of MDT combined with scenario simulation teaching in the training and teaching of intensive care medicine residents. Method: experimental control method was used in this study. Eighty-one physicians who received standardized resident training in the department of critical care medicine of our hospital from September 2019 to December 2020 were selected as the research subjects. Among them, 46 physicians who participated in the standardized training of critical care medicine from September to December 2020 were assigned to the experimental group. MDT combined with scenario simulation teaching mode was used for teaching, including cardiopulmonary resuscitation, shock management process and dyspnea management process. Thirty-five physicians who participated in the training from September to December 2019 served as the control group, and compared with the same period of the previous year, the teaching effect was evaluated. Results: the reorganized students were better than the control group in clinical operation assessment, after-school active learning, satisfaction and teamwork ability, with statistical significance (P < 0.05). Conclusion: MDT combined with scenario simulation teaching mode has positive significance in the cultivation of operation ability, learning enthusiasm and teamwork ability of critical medicine residents. 展开更多
关键词 MDT scene simulation teaching critical care medicine teaching reform
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Digital Simulation Platform for Satellite Launch Mission Verification
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作者 ZU Yunyu ZHANG Chi +5 位作者 BU Xiangwei XU Guoguang WU Kao XU Lijie WANG Chenxi LIU Chang 《Aerospace China》 2023年第4期9-16,共8页
To simulate the satellite launch mission under a general platform which could be used in a full-digital mode as well as in a semi-physical way, is an important way to certify the mission design performance as well as ... To simulate the satellite launch mission under a general platform which could be used in a full-digital mode as well as in a semi-physical way, is an important way to certify the mission design performance as well as technical feasibilities, and it relates to complex system simulation methods such as multi-disciplinary coupling, multi-language modeling as well as interactive simulation and virtual simulation technologies. This paper introduces the design of a digital simulation platform for satellite launch mission verification.The platform has the advantages of high generality and extensibility, being easy to build up. The Functional Mockup Interface(FMI) Standard is adopted to achieve integration of multi-source models. A WebGL based 3D visual simulation tool is also adopted to implement the virtual display system which could display the rocket launch process and rocket-satellite separation with high fidelity 3D virtual scenes. A configuration tool was developed to map the 3D objects in the visual scene with simulation physical variables for complex rocket flight control mechanisms, which greatly improves the platform's generality and extensibility. Finally the real-time performance had been tested and the YL-1 launch mission was adopted to demonstrate the functions of the platform.The platform will be used to construct a digital twin system for satellite launch missions in the future. 展开更多
关键词 digital simulation platform Functional Mockup Interface satellite launch mission WebGL based 3D virtual scenes
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原位情景模拟联合角色扮演在血液科病房护士分层培训中的应用
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作者 韩丽鲜 熊瑛 汪敏 《齐鲁护理杂志》 2026年第2期147-149,共3页
目的:探讨原位情景模拟(ISS)联合角色扮演在血液科病房护士分层培训中的应用效果。方法:选取2021年12月—2022年12月血液科18名病房护士作为研究对象,按照培训时间不同,将2022年7月1日采取常规培训管理的作为实施前,将2022年7月1日实施... 目的:探讨原位情景模拟(ISS)联合角色扮演在血液科病房护士分层培训中的应用效果。方法:选取2021年12月—2022年12月血液科18名病房护士作为研究对象,按照培训时间不同,将2022年7月1日采取常规培训管理的作为实施前,将2022年7月1日实施ISS联合角色扮演分层培训管理的作为实施后。18名护士接受相同操作培训、血液科相关知识培训、医院及科室规章制度培训等。比较实施前后护士理论成绩和操作考核成绩、护患沟通能力评分、团队协作能力、护理满意度情况。结果:实施后理论知识成绩和操作考核成绩均高于实施前(P<0.01);实施后护患基本语言沟通能力、护患基本非语言沟通能力、困难情景沟通能力、情感支持能力评分均高于实施前(P<0.01);实施后团队配合能力、闭环沟通能力评分均高于实施前(P<0.01);实施后护士是否主动关心患者、护士宣教能力、患者对护士的信任度、患者总体满意度评分均高于实施前(P<0.01)。结论:ISS联合角色扮演的分层培训可提高血液科护理人员的操作技能、护患沟通能力、团队协作能力和护理满意度。 展开更多
关键词 原位情景模拟 分层培训 血液科 操作技能 护患沟通 团队协作
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基于SIMULINK和VR技术的三维监视软件开发 被引量:2
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作者 章勇华 杨志强 +1 位作者 李平 黄文华 《系统仿真学报》 CAS CSCD 北大核心 2009年第18期5713-5715,共3页
在某武器系统演示试验中,需要对靶目标的运动进行实时跟踪,并方便直观地查看其飞行姿态和飞行轨迹。根据任务需求,给出了一种基于Matlab(Simulink)和VR技术的三维动态监视软件的实现方法。软件采用VB与Matlab混合编程,使用Simulink模型... 在某武器系统演示试验中,需要对靶目标的运动进行实时跟踪,并方便直观地查看其飞行姿态和飞行轨迹。根据任务需求,给出了一种基于Matlab(Simulink)和VR技术的三维动态监视软件的实现方法。软件采用VB与Matlab混合编程,使用Simulink模型接收VB传送的数据并即时更新虚拟世界场景,充分利用虚拟现实技术的真实直观、视点可变、与现实同步等优点,很好地完成了动态监视任务。重点介绍了程序接口技术和Simulink模型控制技术,这种方法也能够方便地应用于其他类似的监视任务中。 展开更多
关键词 虚拟现实 混合编程 接口 三维动态监视软件
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基于ArcScene与SketchUp交互建模技术的生态景观开发——以当阳市庙前镇关雎河畔为例
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作者 冯德鸿 雷奥林 池晓霞 《测绘与空间地理信息》 2022年第8期57-59,共3页
以当阳市庙前镇关雎河畔为例,重点介绍了基于ArcScene与SketchUp交互建模技术:基于SketchUp Esri插件和基于ArcScene中3D编辑器的交互建模技术,并比较两种不同建模技术之间的优缺点和适用范围,同时应用带有高程值的航拍地形数据点要素... 以当阳市庙前镇关雎河畔为例,重点介绍了基于ArcScene与SketchUp交互建模技术:基于SketchUp Esri插件和基于ArcScene中3D编辑器的交互建模技术,并比较两种不同建模技术之间的优缺点和适用范围,同时应用带有高程值的航拍地形数据点要素模拟关雎河畔地形,对场景精细化以完成生态景观场景开发。 展开更多
关键词 Arcscene SKETCHUP 交互建模 地形模拟 场景精细化
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Computer Model for Evaluating Multi-Target Tracking Algorithms
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作者 Garret Vo Chiwoo Park 《Open Journal of Modelling and Simulation》 2019年第1期1-18,共18页
Public benchmark datasets have been widely used to evaluate multi-target tracking algorithms. Ideally, the benchmark datasets should include the video scenes of all scenarios that need to be tested. However, a limited... Public benchmark datasets have been widely used to evaluate multi-target tracking algorithms. Ideally, the benchmark datasets should include the video scenes of all scenarios that need to be tested. However, a limited amount of the currently available benchmark datasets does not comprehensively cover all necessary test scenarios. This limits the evaluation of multitarget tracking algorithms with various test scenarios. This paper introduced a computer simulation model that generates benchmark datasets for evaluating multi-target tracking algorithms with the complexity of multitarget tracking scenarios directly controlled by simulation inputs such as target birth and death rates, target movement, the rates of target merges and splits, target appearances, and image noise types and levels. The simulation model generated a simulated video and also provides the ground-truth target tracking for the simulated video, so the evaluation of multitarget tracking algorithms can be easily performed without any manual video annotation process. We demonstrated the use of the proposed simulation model for evaluating tracking-by-detection algorithms and filtering-based tracking algorithms. 展开更多
关键词 Performance EVALUATION multi-target TRACKING COMPUTER Model simulation
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短波中波红外折反射式共口径光学系统设计 被引量:1
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作者 马洪涛 韩冰 +2 位作者 许洪刚 李旭 张明亮 《中国光学(中英文)》 北大核心 2025年第2期359-367,共9页
为了实现高精度、高可靠性的动态场景模拟,设计了一套短波中波多波段折反射式共口径光学系统。该系统结合了反射、折射和共口径光路的优势,该系统分为主光学系统、短波光学系统和中波光学系统,3个系统分别独立设计。通过理论计算得到光... 为了实现高精度、高可靠性的动态场景模拟,设计了一套短波中波多波段折反射式共口径光学系统。该系统结合了反射、折射和共口径光路的优势,该系统分为主光学系统、短波光学系统和中波光学系统,3个系统分别独立设计。通过理论计算得到光学系统的初始结构,再利用光学设计软件对光学参数作进一步细化,最后,按照光瞳匹配原则将各分系统组合在一起,并对系统的成像质量作进一步优化设计。利用调制传递函数(Modulation Transfer Function,MTF)和畸变等定量评价指标,仿真验证了系统设计的合理性。结果显示:所设计的短波光学系统视场角为±0.107°、焦距为2500 mm、入瞳尺寸为300 mm,MTF达到衍射极限,畸变小于0.3%;中波光学系统的视场角为±0.65°、焦距为750 mm、入瞳尺寸为300 mm,MTF接近衍射极限,畸变小于1%。该系统成像质量好、体积小、实用性强,在光电跟瞄和空间探测等领域具有较大应用潜力。 展开更多
关键词 景物模拟器 光学设计 短波中波红外成像 共口径光学系统
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基于时序模拟的新能源合理利用率分析 被引量:1
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作者 吴国栋 包广清 《自动化应用》 2025年第3期142-145,共4页
研究长时间尺度下新能源出力的月度、季节性特征,基于多年平均风光资源,利用归一化序列表征新能源出力的波动性和间歇性,再结合最新装机时序、最新气候气象预报形成的新能源理论出力序列,考虑用电负荷、电网调峰、断面约束,采用聚合法... 研究长时间尺度下新能源出力的月度、季节性特征,基于多年平均风光资源,利用归一化序列表征新能源出力的波动性和间歇性,再结合最新装机时序、最新气候气象预报形成的新能源理论出力序列,考虑用电负荷、电网调峰、断面约束,采用聚合法规划水火电机组开机形成的新能源消纳空间,以新能源利用率最高为目标函数进行优化计算。通过多次调整边界变化,建立电网装机规模、布局和时序与新能源电量、利用率的耦合关系,综合分析得出最合理的新能源利用率、最佳的储能配比需求。 展开更多
关键词 场景再现 新能源 时序模拟 合理利用率
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天基空间小目标复杂场景数字成像仿真
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作者 李鹏飞 徐伟 +2 位作者 朴永杰 方应红 石敦攀 《系统仿真学报》 北大核心 2025年第9期2315-2334,共20页
针对天基空间目标检测技术研究对空间图像数据源的普遍需求,重点面向智能算法训练数据不足以及传统算法使用数据单一等问题,以生成空间小目标复杂场景下动态数字序列图像为目的,设计了一种基于天基观测平台的可见光数字成像仿真系统。... 针对天基空间目标检测技术研究对空间图像数据源的普遍需求,重点面向智能算法训练数据不足以及传统算法使用数据单一等问题,以生成空间小目标复杂场景下动态数字序列图像为目的,设计了一种基于天基观测平台的可见光数字成像仿真系统。提出了一种小目标成像模型,基于二维形状特征点描述法及成像解析模型,对空间目标进行数字建模及成像模拟;设计了一种背景恒星成像方法,经过视场恒星选取、成像坐标转换和亚像素级位置建模,可实现精度达±0.005像素的星点目标位置成像建模;设计了空间环境下多种光照背景的动态模型,并进行了成像噪声分析及建模,拓扑了空间目标检测图像的场景种类及鲁棒性检测的试验条件。在运动仿真算法设计中加入了目标灰度动态变化、目标曲线运动、运动拖尾以及平台抖动等成像仿真功能。仿真结果表明:该仿真系统可生成定制化的动态数字图像序列。经必要性与充分性验证评估,本数字仿真系统满足空间目标检测算法开发对多元图像数据的需求,对空间目标检测算法研究有一定使用价值。 展开更多
关键词 空间小目标 复杂场景 成像模型 图像处理 动态仿真
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