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Articles 8431 - 8460 of 25760

Full-Text Articles in Engineering

Adaptive Harmony Pso Based Trusted Qos Routing Scheme, Xinxin Sun, Xingwei Wang, Huang Min Jul 2020

Adaptive Harmony Pso Based Trusted Qos Routing Scheme, Xinxin Sun, Xingwei Wang, Huang Min

Journal of System Simulation

Abstract: With the continuous expansion of the network scale and the growing number of new applications, the Internet is faced with the challenges of security, dynamicity, heterogeneity and other problems. The emergence of new businesses brings higher demands on network quality of service (QoS) than before. At the same time, a huge amount of network security problems lead to people not being trusted on network. The trustworthiness of the networks and the QoS routing were investigated. A trusted QoS routing scheme based on adaptive harmony PSO search algorithm was proposed with QoS satisfaction degree and trustworthiness value satisfaction degree considered …

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Study Of Modified Particle Swarm Optimization Algorithm Based On Adaptive Mutation Probability, Huang Song, Tian Na, Zhicheng Ji Jul 2020

Study Of Modified Particle Swarm Optimization Algorithm Based On Adaptive Mutation Probability, Huang Song, Tian Na, Zhicheng Ji

Journal of System Simulation

Abstract: Mutation operator is an effective method to solve the premature of particle swarm optimization. According to the characteristic of population diversity, a modified particle swarm optimization based on adaptive mutation probability and hybrid mutation strategy was proposed. Aggregation degree was introduced to adjust the mutation probability of each generation, and a hybrid Gaussian and Cauchy mutation based on the global-best position and an adaptive wavelet mutation based on the worst personal-best position were carried out. The simulation of the comparisons with other particle swarm optimizations with mutation operator on matlab was proposed. The results demonstrate that the proposed algorithm …

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Bernstein Neural Network Chaotic Sequence Prediction Based On Phase Space Reconstruction, Hongli Zhang, Ruiguo Li, Wenhui Fan Jul 2020

Bernstein Neural Network Chaotic Sequence Prediction Based On Phase Space Reconstruction, Hongli Zhang, Ruiguo Li, Wenhui Fan

Journal of System Simulation

Abstract: In view of the low prediction accuracy and the complex structure of traditional BP neural network, RBF neural network and AR model, a new prediction method with the combination of phase space reconstruction and Bernstein neural network was proposed, and PSO algorithm was used for parameters optimization of combination forecast model. Taking Sprott-J chaotic system and traffic flow system as models respectively, the combination of autocorrelation and Cao method was used to reconstruct phase space of chaotic time sequence, the refactoring phasor of time delay and Bernstein neural network were used to establish the prediction model, and do comparative …

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Application Research On Children's Indoor Fire Escape Education System Based On Virtual Reality Technology, Chunhua Hu, Xiaomei Chun, Shihong Chen Jul 2020

Application Research On Children's Indoor Fire Escape Education System Based On Virtual Reality Technology, Chunhua Hu, Xiaomei Chun, Shihong Chen

Journal of System Simulation

Abstract: It is significant to study children’s fire escape education in the virtual reality. The existing fire escape educations for children mostly adopt the ways of watching books and videos, lacking vitality and interactivity. According to the psychological characteristics of children, the models for virtual fire scene and the virtual character were built using the 3Ds Max. Based on Virtools platform, a game style of children's indoor fire escape education system was designed, with the integration of human-computer interaction, voice, smoke, and animation demo. Users experience the fire escape by auditory, visual and virtual behavior, with controlling virtual character to …

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Study On Diffraction Effects Of Planar Underwater Shock Interaction With Rigid Quadrilateral Structure, Yuchun Li, Zhenru Gao, Bin Feng, Liu Qiang, Shen Wei Jul 2020

Study On Diffraction Effects Of Planar Underwater Shock Interaction With Rigid Quadrilateral Structure, Yuchun Li, Zhenru Gao, Bin Feng, Liu Qiang, Shen Wei

Journal of System Simulation

Abstract: Finite element simulation using LS-DYNA was performed to investigate the interaction of underwater planar shock wave and rigid quadrilateral structure. The characteristics of diffraction waves on both front and back surface of the rigid structure were analyzed and trace lines were gained. Vortex was formed near the corner of the structure diffracted by underwater shock with a void part of zero pressure existing in the local fluid region. Bulk cavitation near fluid-structure interface leads fluid pressure to drop to negative value, which is an important damage factor to merged structures. A derived pressure formulas of diffraction wave to rigid …

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Fast Generating Algorithm Of Interest Roaming Path Based On Freehand Sketch, Dongjin Huang, Pengbin Tang, Youdong Ding Jul 2020

Fast Generating Algorithm Of Interest Roaming Path Based On Freehand Sketch, Dongjin Huang, Pengbin Tang, Youdong Ding

Journal of System Simulation

Abstract: Considering properties of touch interaction of intelligent terminals, a fast generating algorithm of interest roaming path based on freehand sketch was proposed and applied in the 3D mobile interactive system of virtual display. The self-adapting reduce method was adopted to optimize the feature points of sketch curve for addressing too much feature points in local. The piecewise curve fitting method was used to quickly generate smooth obstacle avoidance path for handling the case of sketch line over the obstacle, and the final roaming path was adjusted to approximate the freehand sketch as much as possible by error control. Experimental …

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Integrated Dynamic Equivalent Model Of Super Capacitor Energy Storage System, Xinran Li, Tingting Xu, Shaojie Tan, Xingting Cheng, Xiaojun Zeng Jul 2020

Integrated Dynamic Equivalent Model Of Super Capacitor Energy Storage System, Xinran Li, Tingting Xu, Shaojie Tan, Xingting Cheng, Xiaojun Zeng

Journal of System Simulation

Abstract: As a high-power energy storage device, super capacitor (SC) is applied in micro-grid energy storage, secondary frequency regulation and peak load shifting in power system, and the research of which has become a hotspot. A second-order model of SC monomer suitable for the grid simulation was established, and the parameter identification using the charge and discharge experiment data under constant current and constant power modes was conducted based on genetic algorithm. A SC energy storage system has been set up in Simulink/Matlab based on the established second-order model of SC. The integrated dynamic equivalent model of SC energy storage …

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Powertrain System Matching Optimization And Regenerative Braking Strategy For Pure Electric Vehicle, Zhang Qi, Xiaoling Fu, Li Ke, Guojing Xing, Chenghui Zhang Jul 2020

Powertrain System Matching Optimization And Regenerative Braking Strategy For Pure Electric Vehicle, Zhang Qi, Xiaoling Fu, Li Ke, Guojing Xing, Chenghui Zhang

Journal of System Simulation

Abstract: Different matching proposals meeting the constraints were multi-objective optimized with the combined matrix, and a new regenerative braking control strategy for electric vehicle was designed. According to the design targets of pure electric vehicle, the parameters of drive motor, battery pack and reducer were analyzed. Multi-objective optimization function was designed with the linearity weighted aggregation method, considering both power and economy of electric vehicle, and the vehicle performance of different proposals was comparatively measured through Cruise combined matrix simulation. The front and rear braking force distribution control strategy was designed based on the velocity and brake pedal intensity. Simulation …

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Simulation Of Staring Imaging Attitude Tracking Finite Time Control Of Tv Satellite, Yushu Feng, Kun Liu, Wendun Zhang Jul 2020

Simulation Of Staring Imaging Attitude Tracking Finite Time Control Of Tv Satellite, Yushu Feng, Kun Liu, Wendun Zhang

Journal of System Simulation

Abstract: For the attitude tracking control problem of TV satellite staring imaging, a attitude tracking finite time control method driven by Double-Gimbaled Control Moment Gyroscopes (DGCMG) and reaction flywheels was proposed. The expected attitude angles and attitude angular velocity of satellite was computed when it stared imaging. A TV satellite attitude tracking model was described with quaternion. A finite time controller based on homogeneous method of nonlinear system was proposed. The numerical simulation and hardware-in-loop simulation results show that the method can achieve the attitude tracking control of staring imaging of TV satellite, guarantee the closed-loop system converge to the …

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Multiple Disasters Evacuation Perceptual Model Based On Agent Technology, Xuefeng Zhang, Chengjun Zhang, Chenxi Bai, Taiping Jiang, Yuezhong Chu Jul 2020

Multiple Disasters Evacuation Perceptual Model Based On Agent Technology, Xuefeng Zhang, Chengjun Zhang, Chenxi Bai, Taiping Jiang, Yuezhong Chu

Journal of System Simulation

Abstract: Various disasters or accidents often reoccur in the process of evacuation. In order to solve the problem of evacuation in multiple disasters, a perceptual model for evacuation was proposed based on multi-agent technology. By guiding the decision and action of people with mathematical model of disaster and individual perception model, the crowd evacuation stimulation was combined with environment disaster model. It stimulated the perceptive functions such as visual sense, sense of smell, and auditory sense with ray method, gas molecular diffusion formula, and the theory of sound transmission. It analyzed the information of people through stress reaction model and …

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Multivariate Time Series Local Support Vector Regression Forecast Methods For Daily Temperature, Dingcheng Wang, Zhili Cao, Beijing Chen, Yujia Ni Jul 2020

Multivariate Time Series Local Support Vector Regression Forecast Methods For Daily Temperature, Dingcheng Wang, Zhili Cao, Beijing Chen, Yujia Ni

Journal of System Simulation

Abstract: Daily temperature forecast is an important part in weather forecasting. New methods are explored to improve the prediction accuracy since the atmosphere system is a complex nonlinear system. A model based on multivariate time series and local support vector regression was proposed. After constructing multivariate time-series with C-C method and minimum prediction error method, a way to extract the nearest neighbor from each predictor's sequences was used to build the 1-day ahead local forecasting model for daily maximum and minimum temperature. To demonstrate the effectiveness, the model was applied and tested in data from 753 stations data package of …

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Research On Development And Integration Method Of Bmds Integrated Test And Training Environment, Guoqiang Zhang, Xiaohe Liu, Fangting Jiang, Zhiping Li Jul 2020

Research On Development And Integration Method Of Bmds Integrated Test And Training Environment, Guoqiang Zhang, Xiaohe Liu, Fangting Jiang, Zhiping Li

Journal of System Simulation

Abstract: Building the BMDS integrated test and training environment is an effective means to quickly generate the combat effectiveness of BMDS. Aiming at the current situation that there was no unified development and integration method of the BMDS integrated test and training environment, based on systematic analysis to the capability requirements of the method, the development and integration method of pure digital simulation based on Integrated Non-Real-time Simulation Environment (INRS) and LVC simulation based on Integrated Real-time Simulation Environment (IRSE ) was put forward, and the technologies of adaptor was focused on. The integrated development and integration not only of …

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Research Of Merging Three-Dimensional Static Scene And Moving Objects Based On Video, Kunjin He, Wang Lin, Jianxin Liu, Zhengming Chen, Xiaozhong Chen Jul 2020

Research Of Merging Three-Dimensional Static Scene And Moving Objects Based On Video, Kunjin He, Wang Lin, Jianxin Liu, Zhengming Chen, Xiaozhong Chen

Journal of System Simulation

Abstract: Against the difficulty in three-dimensional real-time rendering of scene that contains moving objects, a video-based method in building and merging three-dimensional static scene and moving objects was proposed. According to the classification of moving objects, a three-dimensional static scene was established and a parameterized model base was produced. Based on the video, moving objects were detected and features (including basic features and dynamic features) were extracted. Based on basic features, corresponding type model in the parameterized model base was instantiated. Based on the dynamic features, the three-dimensional static scene and moving object models were merged and the …

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Effectiveness Equivalent And Multi-Effectiveness Equivalent Of Weapon System, Zhongren Ni, Zhiqiang Zhao, Yueping Wang Jul 2020

Effectiveness Equivalent And Multi-Effectiveness Equivalent Of Weapon System, Zhongren Ni, Zhiqiang Zhao, Yueping Wang

Journal of System Simulation

Abstract: Equivalent analysis based on weapon effectiveness, which was conducted during 1960s-1970s by American scholars, provided scientific method for equivalent analysis of weapon system. But this principle can only be used under the given conditions, which was pointed out by American scholars. That how to judge solution existence of effectiveness equivalent model under given conditions and remove limit is always a difficult question of perplexing weapon system analysis. By the use of special matrix theory and set decomposition principle, weapon coordination model of weapon system of systems combat was established, down-triangle matrix standard model of efficacy matrix was obtained, the …

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Soa-Based Network-Centric Software Architecture For Warfare Simulation Applications, Wendi Cheng, Chu Wei Jul 2020

Soa-Based Network-Centric Software Architecture For Warfare Simulation Applications, Wendi Cheng, Chu Wei

Journal of System Simulation

Abstract: For the difficulty of integrating heterogeneous resource and low reuse rate by task-oriented development model in the traditional electronic information system, this article proposes a service-oriented simulation software constructing method. By information registration, publication, subscription, distribution and other network-centric core services to build a global service bus for dynamic scheduling, we can improve information sharing capabilities. By the standard descriptions and specifications, we can make flexible reorganization of business services. In a loosely coupled way to integrate the system between the service provider and service requester, we can format a service-oriented system development platform, which can provide support …

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Overall-Wind-Speed Dynamic Sliding Mode Power Control For Direct-Driven Pmsg-Based Wind Energy Generation System, Aihua Wu, Buhui Zhao, Jingfeng Mao Jul 2020

Overall-Wind-Speed Dynamic Sliding Mode Power Control For Direct-Driven Pmsg-Based Wind Energy Generation System, Aihua Wu, Buhui Zhao, Jingfeng Mao

Journal of System Simulation

Abstract: A novel dynamic sliding mode control (DSMC) strategy for direct-driven PMSG system was proposed to improve wind energy generation efficiency in overall-wind-speed operating condition. Based on the multi-stage working characteristics, optimum torque control method was adopted to implement the MPPT task when wind speed was under the rating value, and power control method was adopted to implement the constant power generation task when wind speed was above the rating value. The controller was designed by the sliding mode reaching law method of power exponent function. Due to the switch function amplitude feedback, the switch gain was granted the …

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Compensation For Auv’S Navigation Algorithm Based On Virtual Noise Model, Menglong Cao, Feifei Li, Xintao Liu Jul 2020

Compensation For Auv’S Navigation Algorithm Based On Virtual Noise Model, Menglong Cao, Feifei Li, Xintao Liu

Journal of System Simulation

Abstract: The simultaneous localization and mapping (SLAM) of Autonomous underwater robot (AUV) is the key technology to realize the auto navigation for robot in the unknown environment of underwater, and it is one of the hot topics in the field of robotics research. In the framework of autonomous underwater robot SLAM, extended kalman filter (EKF) was applied to achieve the SLAM. For the model linearization errors and unknown noise statistics, EKF algorithm was used based on virtual noise compensation technology. This method could make the unknown model error into the virtual noise, and use the noise statistical to estimate the …

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Research On Magnetic Device Model Of Nonlinear Inductance Combined With Transformer And Inductor, Hongzhu Li, Jiayue Sun, Qingjie Qi, Wang Qiao Jul 2020

Research On Magnetic Device Model Of Nonlinear Inductance Combined With Transformer And Inductor, Hongzhu Li, Jiayue Sun, Qingjie Qi, Wang Qiao

Journal of System Simulation

Abstract: A modeling method of magnetic device combining transformer and inductance was put forward. The modeling method reflects characteristics of magnetic and electric circuit simultaneously, and reflects parasitic parameters with capacitance. And the physical concepts of parameters are clear in the model. The interface model reflecting magnetic and electric circuit was established through ideal transformer based on electromagnetic theory, and nonlinear inductance simulation model reflecting hysteresis effect through derivation was obtained. The hysteresis loop of inductance actual simulation and that from magnetic core manual agreed well, proving the correctness and effectiveness. By modeling method in the proposed magnetic device, coupling …

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Performance Evaluation Of Bayesian Estimator With Consistency Validation, Zuolei Sun, Li Ying, Zhang Bo, Zhang Wen Jul 2020

Performance Evaluation Of Bayesian Estimator With Consistency Validation, Zuolei Sun, Li Ying, Zhang Bo, Zhang Wen

Journal of System Simulation

Abstract: Considering the lack of sound evaluation method for Bayesian estimator design, an approach employing consistency as the core criterion was proposed. By studying the unbiasedness and whiteness of innovation sequence yielded during observation update routine, the normalized innovations square (NIS) was constructed, and then the chi-square test being able to detect the Posterior's consistency was carried out on NIS. Experiments demonstrate that the proposed algorithm can identify the inappropriate parameter configuration for both linear and nonlinear systems, therefore the performance of the estimators can be evaluated.

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Research On Credibility Of Function Validation To C2 System Of Land Force, Yaxin Tan, Yongchun Xia, Fan Rui, Haitao Zhi Jul 2020

Research On Credibility Of Function Validation To C2 System Of Land Force, Yaxin Tan, Yongchun Xia, Fan Rui, Haitao Zhi

Journal of System Simulation

Abstract: The function verification of C2 system of land force is a way to check its satisfaction level to real fighting in the system application. The verification is caught out after the force has received these equipment. In order to complete the verification, the environment with virtual force and real software was built by modeling and simulation method, so that the verification could be carried out under the condition which is similar to true combat. In this environment, the interaction between real human and virtual force by the C2 software could help to complete the verification. Focusing on the credibility …

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Optimization Scheme Of Average Time For Finding Idle Channel In Cognitive Radio System, Qiao Pei, Liyuan Xiao, Yanyan Han, Gao Ling Jul 2020

Optimization Scheme Of Average Time For Finding Idle Channel In Cognitive Radio System, Qiao Pei, Liyuan Xiao, Yanyan Han, Gao Ling

Journal of System Simulation

Abstract: In cognitive radio system, periodic spectrum sensing was taken by secondary users to prevent the interference to primary users. Supposed that there are many primary user channels, when the current primary user occupies channel, secondary users do spectrum handover. During spectrum handover, the time of finding an idle channel is a random variable. In order to speed up spectrum handover, the system used equal gain combining cooperative spectrum sensing to inspect an idle channel. This pattern optimized the sensing time of the single user channel, in order to get the best effect of the average time in finding idle …

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Mechanism For Green Multicast Routing Protection In Multi-Granularity Transport Networks, Junling Shi, Xingwei Wang, Huang Min Jul 2020

Mechanism For Green Multicast Routing Protection In Multi-Granularity Transport Networks, Junling Shi, Xingwei Wang, Huang Min

Journal of System Simulation

Abstract: A mechanism for green multicast routing protection was designed, where the constraint of quality of service (QoS), energy consumption and the survivability to single link or node failure were under consideration. The node model which supported the exchange of multi-granularity services was built to meet the energy saving requirement in multi-granularity services, and the analysis of energy consumption was introduced with the formulas of energy consumption defined. Based on the physical topology, a multi-layer auxiliary graph was proposed, which was used to allocate and release resources. The fuzzy mathematics method was used to present QoS by the membership degree. …

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Evolutionary Game-Based Spectrum Sharing Scheme In Cognitive Radio Network, Huanhuan He, Xingwei Wang, Huang Min Jul 2020

Evolutionary Game-Based Spectrum Sharing Scheme In Cognitive Radio Network, Huanhuan He, Xingwei Wang, Huang Min

Journal of System Simulation

Abstract: In order to solve the waste of resources caused by the static spectrum allocation policy, cognitive radio technology can be used to dynamically and efficiently manage spectrum, and spectrum sharing becomes the key issue. To make secondary users to share spectrum fairly, an evolutionary game-based spectrum sharing scheme in cognitive radio network was proposed. Because cognitive radio network was dynamic and heterogeneous, the wireless channel was unreliable and affected by environment easily, the knowledge of fuzzy mathematics was introduced to characterize the parameters related to the secondary user satisfaction degree, and the Gas Brownian Motion Optimization algorithm was …

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Study Of Model And Simulation On Ceramic Tile Polishing Energy Consumption, Haidong Yang, Chengdun Guo, Li Hong, Guosheng Liu, Jiawen Wu Jul 2020

Study Of Model And Simulation On Ceramic Tile Polishing Energy Consumption, Haidong Yang, Chengdun Guo, Li Hong, Guosheng Liu, Jiawen Wu

Journal of System Simulation

Abstract: Currently, there are many defects in the production line of ceramic polishing, such as over polishing and high energy consumption, so it is an urgent mission to optimize the technical processes in order to cut down the energy consumption. Material removal equations and energy usage model were established based on the kinematic mechanism process and Preston equation. Simulation experiments were done by the above equations and model, so as to depict the evolution in both quality and power consumption. The impact of transmission speed of belt, lateral swing speed, disc rotation speed and other kinematic parameters on over polishing …

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Research On Modeling And Scheduling Of Cluster Tools With Reentrant Process, Chunrong Pan, Li Liang Jul 2020

Research On Modeling And Scheduling Of Cluster Tools With Reentrant Process, Chunrong Pan, Li Liang

Journal of System Simulation

Abstract: Cluster tools reconfigured are increasingly adopted in wafer fabrication. With single-wafer processing technology, the productivity and quality of semiconductor manufacturing have been improved. The configurations of cluster tools and constraints of operation processes were proposed. Due to the increase of processing requirements of wafer revisiting, the scheduling of cluster tools becomes more complicated. Thus, modeling, performance analyzing and scheduling of cluster tools with reentrant process were reviewed. Meanwhile, an illustrative example was given to show the feasibility of simulation scheduling. By analyzing the advantages and disadvantages of research methods available, approaches and future directions which would be effective for …

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Robust Model And Optimization Of Anti-Impact Performance For Mems Ring Gyroscope, Jiang Tao, Sun Lin Jul 2020

Robust Model And Optimization Of Anti-Impact Performance For Mems Ring Gyroscope, Jiang Tao, Sun Lin

Journal of System Simulation

Abstract: In order to reduce the influence of parameter variation on anti-impact performance of micro mechanical gyroscope, a kind of MEMS ring gyroscopes was chosen as the research object, applying the method of explicit dynamic finite element analysis and design of experiment, influence of parameter variation was studied with significant analysis, and reasonable design parameters were decided. Mathematical model of anti-impact robustness optimization for ring gyroscope was established, in which maximum impact stress and performance variation were minimized as the optimal goal. Ultimately, the optimal solution set could be obtained by means of pareto multi-objective genetic algorithm. Simulation results show …

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Gep Automatic Clustering Algorithm With Dynamic Penalty Factors, Chen Yan, Kangshun Li, Yang Lei Jul 2020

Gep Automatic Clustering Algorithm With Dynamic Penalty Factors, Chen Yan, Kangshun Li, Yang Lei

Journal of System Simulation

Abstract: Various problems such as sensitive selection of initial clustering center, easily falling into local optimal solution, and determining numbers of clusters, still exist in the traditional clustering algorithm. A GEP automatic clustering algorithm with dynamic penalty factors was proposed. This algorithm combines penalty factors and GEP clustering algorithm, and doesn't rely on any priori knowledge of the data set. And a dynamic algorithm was proposed to generate the penalty factors according to the distribution characteristics of different data sets, which is a better solution for the impact of isolated points and noise points. According to four dataset, penalty factors' …

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Algorithms For Join Queries In Multiple Wireless Sensor Networks, Shangfeng Mo, Yongjian Fan, Xiaoliang Wang, Qingchun Yu, Yinglong Li Jul 2020

Algorithms For Join Queries In Multiple Wireless Sensor Networks, Shangfeng Mo, Yongjian Fan, Xiaoliang Wang, Qingchun Yu, Yinglong Li

Journal of System Simulation

Abstract: The perception layer of Internet of Things (IoTs) is mainly composed of Multiple Wireless Sensor Networks (MWSNs). Data query processing is a very important research area in MWSNs. Join queries can monitor similar network environments in different positions. In general join algorithm, each ordinary node sends its join attribute value to the database server. The database server finds out the result set which meets the join conditions. In distributed join algorithm, the ordinary nodes predict their filters of next round and the database server obtains the global, common filters. The nodes which meet the join conditions send their data …

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Generate Network’S Disjoint Mps Based On Simevents Simulation, Tang Jian, Fuli Ai, Faming Shao, Jiaojiao Zhang Jul 2020

Generate Network’S Disjoint Mps Based On Simevents Simulation, Tang Jian, Fuli Ai, Faming Shao, Jiaojiao Zhang

Journal of System Simulation

Abstract: The disjoint MPs (Minimal Path sets) algorithm proposed was improved from the point of signal transmission. The CoA network was transformed into a corresponding signal network, which was composed of forward and backward transmitting paths. According to the basic principle of disjoint MPs algorithm, a set of signal transmitting and rewriting rules, including forward and backward processing rules, were designed to make the disjoint MPs could be generated by means of DES (Discrete Event Simulation). The basic realizing idea was studied in SimEvents, in which, the entities acted as the information carriers, and the nodes as the …

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Novel Algorithm Of High-Speed Target Isar Imaging Based On Stretch Method, Wenmao Luo, Yingliu Cui Jul 2020

Novel Algorithm Of High-Speed Target Isar Imaging Based On Stretch Method, Wenmao Luo, Yingliu Cui

Journal of System Simulation

Abstract: The pulse compression result will be distorted while the target moves very fast and it cannot get right ISAR images. A novel algorithm based on chirp-Fourier transform was proposed to solve this problem. In the scheme, every echo’s differential frequency signal of stretch processing was calculated by chirp-Fourier transform to estimate the target’s location and speed, and the target’s precious speed could be averaged by the estimations during the whole dwell time. Then the penalty function could be constructed to eliminate the intra and inter-pulse motion, and it could get right ISAR images. Because the chirp-Fourier transform was …

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