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Rotational parameters estimation of maneuvering target in ISAR imaging

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Journal of Systems Engineering and Electronics 2010年第1期21卷 41-46页

作者： Wenchen Li Jin Liu Xuesong Wang Shunping Xiao Guoyu Wang 63880 unit PLA Luoyang 471003 R R. China School of Electronic Science and Engineering National University of Defense Technology Changsha 410073 P. R. China

The rotational parameters estimation of maneuvering target is the key of cross-range scaling of ISAR （inverse synthetic aperture radar）, which can be used in the target feature extraction. The cross-range signal model of rotating target with fixed acceleration is presented and the weighted linear least squares estimation of rotational parameters with fixed velocity or acceleration is proposed via the relationship of cross-range FM （frequency modulation） parameter, scatterers coordinates and rotational parameters. The FM parameter is calculated via RWT （Radon-Wigner transform）. The ISAR imaging and cross-range scaling based on scaled RWT imaging method are implemented after obtaining rotational parameters. The rotational parameters estimation and cross-range scaling are validated by the ISAR processing of experimental radar data, and the method presents good application foreground to the ISAR imaging and scaling of maneuvering target.

关键词： inverse synthetic aperture radar maneuvering target rotational parameters estimation cross-range scaling scaled Radon-Wigner transform imaging.

Blood biomarkers of Alzheimer’s disease:important considerations for use in clinical practice

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Neural Regeneration Research 2025年第1期20卷 205-206页

作者： Sarah Fullam Sean O’Dowd Antoinette O’Connor Department of Neurology Tallaght University HospitalDublinIreland Academic unit of Neurology Trinity College DublinIreland

Introduction:Fluid and positron emission tomography(PET)biomarkers that enable the detection of the hallmark proteins of Alzheimer’s disease(AD)(amyloid and tau)have revolutionized our approach to the diagnosis of *** evolution of AD diagnostic criteria to include biological characterization(Alzheimer’s Association Working Group,2023)provides an appropriate framework to reduce levels of clinico-pathologic mismatch and improve in-vivo diagnostic *** the therapeutic landscape for neurodegenerative disease evolves,it is increasingly incumbent on clinicians to provide timely,and pathologically precise diagnoses for ***,the expensive and invasive nature of these tests limits their scalability.

关键词： Blood Alzheimer diagnosis

Prefix Subsection Matching Binary Algorithm in Passive RFID System

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Defence Technology（防务技术） 2011年第2期7卷 82-86页

作者：王新锋俞静一张绍军周颖 unit No.63880

Identifying speed,tag average response times and reliability are the most important capabilities in passive RFID(radio frequency identification) ***(query tree) is a famous algorithm for lowest-cost RFID tags,but its shortcoming is high searching delay and high tag average response times.A prefix subsection matching binary(PSMB) algorithm based on QTalgorithm is *** key idea of PSMB anti-collision algorithm is that,during searching phase,a given reader uses the particular tags ID,which has been searched out formerly,to shorten searching delay and depress tag average response *** idea of PSMB algorithm can be described as ***,tag ID is composed of several subsections which have different *** on the tags ID searched out formerly,a given reader builds a prefix *** subsequent searching phase,the reader uses its prefix database to deduce searching space of tag *** results show that identification delay of PSMB algorithm is about 1/3 of QTalgorithm,tag average response times is about 1/4 of QTalgorithm,and system throughput rate is treble QTalgorithm.

关键词： information processing radio frequency identification anti-collision binary tree prefix matching

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动态雷达目标RCS的统计分析

电波科学学报 2007年第4期22卷 610-613页

作者：曾勇虎王国玉陈永光汪连栋 63880部队

对于飞机等复杂目标,外场飞行动态测量是获取目标电磁散射特性数据的一个必要手段。基于动态飞行测量实验,详细分析了某中型民航飞机的外场实测RCS特性数据。研究了其统计特性,同时建立了该飞机在不同方位角范围内的起伏模型。研究结果... 详细信息

对于飞机等复杂目标,外场飞行动态测量是获取目标电磁散射特性数据的一个必要手段。基于动态飞行测量实验,详细分析了某中型民航飞机的外场实测RCS特性数据。研究了其统计特性,同时建立了该飞机在不同方位角范围内的起伏模型。研究结果可以为RCS的设计和减缩提供参考,并可应用于雷达目标仿真。

关键词：雷达散射截面动态测量统计分析

空间跟踪与监视系统预警探测单元的技术特性分析

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光电工程 2013年第8期40卷 29-35页

作者：邢晖雷萍刘荣康大勇 63880部队

对空间跟踪与监视系统预警探测单元的探测视场、成像像素规模、空间分辨力、光学增益等光学系统性能进行了逆向工程解算；基于目标与背景的短波红外辐射特性，对该预警探测单元的工作波段进行了定量分析，提出了其预警探测单元并非工作... 详细信息

对空间跟踪与监视系统预警探测单元的探测视场、成像像素规模、空间分辨力、光学增益等光学系统性能进行了逆向工程解算；基于目标与背景的短波红外辐射特性，对该预警探测单元的工作波段进行了定量分析，提出了其预警探测单元并非工作在传统预警卫星常用的低大气透过率波段（2．5～2．9gm）的新观点。计算结果表明，在强背景噪声条件下，预警探测单元采取高大气透过率波段（2-2．4μm）的选通滤波措施，可获得最优探测能力。

关键词：预警探测太阳同步轨道空间分辨力弹道导弹信噪比

Heterogeneity of mature oligodendrocytes in the central nervous system

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Neural Regeneration Research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam M.R.Groh Moein Yaqubi Qiao-Ling Cui Jo Anne Stratton G.R.Wayne Moore Jack P.Antel Neuroimmunology unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is *** delve into early 20th-century studies by Robertson and Río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature ***,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus RNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression analysis

An Evaluation Approach for Operational Effectiveness of Anti-radiation Weapon

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Defence Technology（防务技术） 2011年第2期7卷 112-118页

作者：刘义孙旭陈军安新源 unit No.63880 College of Electronic Science and Engineering National University of Defense Technology

With the development of anti-radiation weapons,the effectiveness evaluation of anti-radiation weapons has been turned from the simple accuracy index to the integrated countermeasure *** research priority is how to access the combat effectiveness of anti-radiation weapons in a complex countermeasure *** the present situation of range test of anti-radiation weapons,a combat effectiveness assessment model based on non-linear index aggregation is proposed for anti-radiation *** the corresponding index system model,index aggregation methods,index marking method and index weight determination are ***,the simulation results verify the efficiency and feasibility of the proposed method.

关键词： analysis on system assessment and feasibility anti-radiation weapon combat effectiveness index aggregation modeling

Data-driven drug repositioning using olfactory omics profiles:challenges and perspectives in neurodegeneration

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Neural Regeneration Research 2025年第7期20卷 1997-1998页

作者： Paz Cartas-Cejudo Adriana Cortés Mercedes Lachén-Montes Elena Anaya-Cubero Joaquín Fernández-Irigoyen Enrique Santamaría Clinical Neuroproteomics unit Proteomics PlatformNavarrabiomedHospitalario Universitario de Navarra(HUN)Universidad Pública de Navarra(UPNA)IdiSNANavarra Institute for Health ResearchPamplonaSpain

Data-driven drug repositioning using olfactory omics profiles-challenges and perspectives in neurodegeneration:Neurodegenerative diseases are characterized by progressive degeneration and loss of neuronal function in the central nervous *** diseases are often characterized as proteinopathies,which are disorders primarily driven by the aggregation or misfolding of specific amyloid proteins within cells,leading to their dysfunction and eventual *** the gain-of-function hypothesis related to the aggregation of these proteins,recently,an alternative hypothesis regarding the loss-of-function of the soluble monomeric proteins during the process of aggregation into amyloids is gaining *** last event is called proteinopenia and refers to conditions characterized by a deficiency or decrease in the levels of specific soluble proteins in the body(Ezzat et al.,2023).It has been demonstrated that levels of soluble proteins involved in neurodegenerative diseases are decreased.

关键词： diseases drug amyloid

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利用惯导信息稳定性的导航误差间接修正方法

信号处理 2014年第1期30卷 100-105页

作者：刘义孙旭李运宏 63880部队

针对惯导累积误差修正受限于外部传感器量测精度的问题,提出了一种惯导信息与外部传感器量测信息数据融合的误差修正方法:利用惯导信息输出短时间内的高稳定特性,通过对修正前的惯导信息、外部传感器量测信息进行数据融合,获得惯导累积... 详细信息

针对惯导累积误差修正受限于外部传感器量测精度的问题,提出了一种惯导信息与外部传感器量测信息数据融合的误差修正方法:利用惯导信息输出短时间内的高稳定特性,通过对修正前的惯导信息、外部传感器量测信息进行数据融合,获得惯导累积误差估计,进而对惯导系统进行修正,修正后的惯导定位精度远高于传感器量测精度。文中以导弹飞行中段利用导引头量测信息修正惯导为例,详细讨论了惯导信息与外部传感器量测信息的数据融合方法,仿真试验结果表明该方法的合理有效性。

关键词：惯性导航系统误差修正加权最小二乘估计雷达导引头