JITeCS Journal of Information Technology and Computer Science最新文献_第8页

On-orbit maintenance and reconfiguration of DSP based on FPGA 基于FPGA的DSP在轨维护与重构

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653605

Hongxuan Ren, Han Liu, Qiang Xue, Xiao-qing Ma, Tao Jiang, Baohua Sun

{"title":"On-orbit maintenance and reconfiguration of DSP based on FPGA","authors":"Hongxuan Ren, Han Liu, Qiang Xue, Xiao-qing Ma, Tao Jiang, Baohua Sun","doi":"10.1117/12.2653605","DOIUrl":"https://doi.org/10.1117/12.2653605","url":null,"abstract":"FPGA+DSP architecture is widely used in satellite digital processing systems. The satellite is in an environment where there is a lot of particle radiation and collisions. In order to avoid changes in stored code data brought by SEU (Single Event Upset), improve the system reliability, at the same time meet the current requirements of software on-orbit reconfiguration, the FPGA and DSP in the space-borne core processor need to have the ability of error correction and reconfiguration. To do this, FPGA and DSP programs need to be stored in external, writable memory. Nor Flash, with its high capacity and reliability, is often chosen as the memory for storing code. At present, the on-orbit maintenance of FPGA is usually realized by using Actel FPGA to conduct TMR (Triple Modular Redundancy), refresh and other processing on the FPGA code stored in Flash. Based on this idea, a T-shaped structure is constructed among FPGA, DSP and Flash for the architecture of the space-borne processor. As the master, FPGA controls Flash to complete TMR, error correction and on-orbit reconfiguration of DSP code. This method reduces hardware redundancy, gives consideration to autonomous maintenance and on-orbit reconfiguration, and increases system robustness. This method has been applied and fully verified in orbit.","PeriodicalId":32903,"journal":{"name":"JITeCS Journal of Information Technology and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80217456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and implementation of ice and snow tourism based on virtual reality technology 基于虚拟现实技术的冰雪旅游设计与实现

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653752

Lidong Zhang, Dongming Liu, J. Zhang, Xin Pu

引用次数: 0

Research on network traffic prediction based on spatial feature fusion 基于空间特征融合的网络流量预测研究

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653683

Junbo Li, Jianxin Zhou, Ning Zhou

引用次数: 0

Construction of "three elements four dimensions" collaborative education model for accounting majors based on digital intelligence technology 基于数字智能技术的会计专业“三要素四维度”协同教育模式构建

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653572

Hua Feng, Fengyang Wang

引用次数: 0

X-band multi-layer phase gradient metasurface for high efficiency far field subwavelength imaging 高效远场亚波长成像的x波段多层相位梯度超表面

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653455

Jinyu Wang, Yaoliang Song, J. Mao, R. Chen

引用次数: 1

Acoustic experimental analysis of Yushu Tibetan affricate 玉树藏舌音的声学实验分析

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653832

Lingzhen Li, Yonghong Li

{"title":"Acoustic experimental analysis of Yushu Tibetan affricate","authors":"Lingzhen Li, Yonghong Li","doi":"10.1117/12.2653832","DOIUrl":"https://doi.org/10.1117/12.2653832","url":null,"abstract":"This paper takes the affricate of Tibetan Yushu dialect as the research object, and uses the acoustic experimental method to extract, analyze and summarize the acoustic parameters such as duration, center of gravity and dispersion, so as to describe the acoustic characteristics of the affricate of Yushu dialect. Firstly, the experiment uses the recording software Audition3.0 single channel adopts voice signal; Secondly, Matlab voice cutting program is used to generate a voice signal corresponding to a single name and voice; Then Praat is used to extract and analyze the parameters. It is concluded that the mean value of voice onset time can clearly distinguish the aspirated and unaspirated affricate of Yushu dialect; The more backward the pronunciation position is, the smaller the voice onset time duration is; The voice onset time value range of voiced affricate is larger than that of unvoiced affricate, and the voice onset time value range decreases with the back of the pronunciation part; The farther back the pronunciation part is, the longer the affricate time is; Compared with the unvoiced affricate, the center of gravity and dispersion of the voiced fricative spectrum are larger.","PeriodicalId":32903,"journal":{"name":"JITeCS Journal of Information Technology and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83350727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term tracking algorithm of soccer player based on kernelized correlation filter 基于核相关滤波的足球运动员长期跟踪算法

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653524

Hongke Chen, Liang Lei

引用次数: 0

A stacked ensemble learning model using heterogeneous base-leaners for information security intrusion detection 基于异构基础学习器的信息安全入侵检测的堆叠集成学习模型

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653422

Chen Chen, Yajiang Qi, Xiaoyan Ye, Guanghua Wang, Lintao Yang, Haiyue Ji

引用次数: 0

Network digital media refactoring resource dynamic allocation method 网络数字媒体重构资源动态分配方法

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653712

Hongyan Ren, Yan Yang

{"title":"Network digital media refactoring resource dynamic allocation method","authors":"Hongyan Ren, Yan Yang","doi":"10.1117/12.2653712","DOIUrl":"https://doi.org/10.1117/12.2653712","url":null,"abstract":"With the continuous development of new media and network information technology, more and more reconfigurable resources of network digital media are needed to build a reconfigurable resource allocation model in network space. The dynamic allocation method of network digital media reconfigurable resources based on multi-source feature fusion cluster analysis is feasible to a certain extent. Combined with the result of feature extraction, the dynamic allocation of reconfigurable resources is realized. Research on the reconfigurable resource allocation method of network digital media is of great significance in improving the utilization capacity of network resources. Traditional method, the dynamic network reconfigurable digital media resources allocation methods mainly include dynamic allocation method based on the characteristics of correlation analysis, PCA principal component analysis method of dynamic allocation and dynamic allocation of fusion k-means clustering method and so on, USES the statistical features extraction and autocorrelation detection, realize reconfigurable dynamic allocation of resources, However, the traditional method of resource allocation has poor fitness and weak feature identification ability, so it needs to be changed. This paper mainly describes the dynamic allocation method of reconfigurable resources of network digital media, aiming at strengthening the allocation of network digital media resources, so as to further improve the dynamic allocation ability of reconfigurable resources and speed up the application of network digital media.","PeriodicalId":32903,"journal":{"name":"JITeCS Journal of Information Technology and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83191974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Source location privacy protection mechanism against global attackers 针对全局攻击者的源位置隐私保护机制

JITeCS Journal of Information Technology and Computer Science Pub Date : 2022-12-08 DOI: 10.1117/12.2653558

Ruiqi Ma, Ziyong Li, Yuxiang Hu, Jinchuan Pei

{"title":"Source location privacy protection mechanism against global attackers","authors":"Ruiqi Ma, Ziyong Li, Yuxiang Hu, Jinchuan Pei","doi":"10.1117/12.2653558","DOIUrl":"https://doi.org/10.1117/12.2653558","url":null,"abstract":"For global attackers with stronger attack capabilities, this paper proposes a source location privacy protection (FS-SLP) mechanism based on pseudo-source nodes. The mechanism uses the global view information of the network and the location information of the current source node to dynamically generate multiple evenly distributed pseudo-source nodes in the network. The pseudo-source node transmits fake data to the sink node when the source node transmits real data packets to the sink node. packets, which greatly increases the difficulty of traffic analysis for attackers; to further enhance the security of the source node, this mechanism generates a dynamically adjustable filtering confusion ring near the sink node, and the nodes in the filtering confusion ring reduce the transmission path. At the same time, the transmission path of true and false data packets is confused, which reduces the energy consumption of nodes near the sink node and further increases the analysis difficulty of the attacker. Simulation experiments show that, compared with the existing scheme, this mechanism greatly prolongs the security period of the network on the premise of increasing a small amount of energy consumption.","PeriodicalId":32903,"journal":{"name":"JITeCS Journal of Information Technology and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88297747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0