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Novel polarimetric detector for target detection in heterogeneous clutter

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Journal of Systems Engineering and Electronics 2016年第6期27卷 1135-1141页

作者： Xu Cheng Longfei Shi yuliang chang Yongzhen Li Xuesong Wang State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System College of Electronic Science and Engineering National University of Defense Technology

A detection of static or slowly moving targets in the inhomogeneous clutter of polarimetric radar is researched and a new detector without exploiting the training set is developed, which has a good performance against the inhomogeneous clutter. The decision rule ensures the constant false alarm rate (CFAR) with respect to the disturbance covariance matrix. Numerical results show the robustness of the proposed method against the inhomogeneous clutter. © 2016 Beijing Institute of Aerospace Information.

关键词： Clutter (information theory) Covariance matrix Numerical methods Polarimeters Radar Radar clutter Radar signal processing Signal processing

The signal selection and processing method for polarization measurement radar

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Science in China(Series F) 2009年第10期52卷 1926-1935页

作者： chang yuliang WANG XueSong LI YongZhen XIAO ShunPing School of Electronic Science and Engineering National University of Defense Technology Changsha 410073 China

Based on the ambiguity function, a novel signal processing method for the polarization measurement radar is developed. One advantage of this method is that the two orthogonal polarized signals do not have to be perpendicular to each other, which is required by traditional methods. The error due to the correlation of the two transmitting signals in the traditional method, can be reduced by this new approach. A concept called ambiguity function matrix （AFM） is introduced based on this method. AFM is a promising tool for the signal selection and design in the polarization scattering matrix measurement. The waveforms of the polarimetric radar are categorized and analyzed based on AFM in this paper. The signal processing flow of this method is explained. And the polarization scattering matrix measurement performance is testified by simulation. Furthermore, this signal processing method can be used in the inter-pulse interval measurement technique as well as in the instantaneous measurement technique.

关键词： target polarization scattering matrix measurement of the polarization scattering matrix ambiguity function ambiguity function matrix polarimetric radar radar waveform radar signal processing

Research on instantaneous polarization radar system and external experiment

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Chinese Science Bulletin 2010年第15期55卷 1560-1567页

作者： WANG XueSong LI YongZhen DAI HuanYao chang yuliang DAI DaHai MA Liang LIU Yong Perception Laboratory of Institution of the Integrated Electronic Information System College of Electronic Science and Engineering NationalUniversi~ of Defense Technology Changsha 410073 China

Instantaneous polarization radar can obtain radar target polarization scattering matrix (PSM) by using single pulse *** system overcomes the defects of inter-pulse interval polarization measurement radar and accurately measures the PSM of the moving *** the capabilities of detection,anti-jamming and target identification can be *** present paper reports the first international self-developed instantaneous polarization radar experimental system and,by using this system,the measurement experiments of target polarization characteristics are *** results show that the performance of target instantaneous polarization measurement by different waveforms is *** basic and common problems in polarization scattering feature extraction and recognition domain are solved.

关键词：瞬态极化雷达系统实验系统极化散射极化雷达目标识别检测能力准确测量

SPECIAL ISSUE： SOCIAL changE AND CHINESE WOMEN A Semiotic Analysis of Female Images in Chinese Women＇s Magazines

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Social Sciences in China 2010年第2期31卷 179-193页

作者： chang yuliang Department of Communication Nan Hua University

This study conducts a semiotic analysis of five stories about contemporary Chinese women presented in four women＇s magazines, namely Women of China, Family, Girlfriend and Trends Cosmopolitan, and identifies three images of women： iron girl, understanding wife and stylish woman. A closer examination of these three images will reveal that they actually contain prejudicial social myths of women held by traditional patriarchal society and that they play an important role in encouraging women to practice the consumerist ideology constructed by the patriarchal system.

关键词： Chinese mainland media women's magazines female image

Establishment of a transformation system in close relatives of wheat under the assistance of TaWOX5

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Journal of Integrative Agriculture 2024年第6期23卷 1839-1849页

作者： Yanan chang Junxian Liu chang Liu Huiyun Liu Huali Tang yuliang Qiu Zhishan Lin Ke Wang Yueming Yan Xingguo Ye Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environment Improvement/College of Life Science Capital Normal UniversityBeijing 100048China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Cell and Chromosome Engineering/Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China

Species closely related to wheat are important genetic resources for agricultural production,functional genomics studies and wheat *** this study,a wheat gene related to regeneration,TaWOX5,was applied to establish the Agrobacterium-mediated transformation systems of Triticum monococcum,hexaploid triticale,and rye(Secale cereale L.)using their immature *** plants were efficiently *** the transformation process,the Agrobacterium infection efficiency was assessed by histochemical staining forβ-glucuronidase(GUS).Finally,the transgenic nature of regenerated plants was verified by polymerase chain reaction(PCR)-based genotyping for the presence of the GUS and bialaphos resistance(bar)genes,histochemical staining for GUS protein,and the QuickStix strip assay for bar *** transformation efficiency of *** genotype PI428182 was 94.4%;the efficiencies of four hexaploid triticale genotypes Lin456,ZS3297,ZS1257,and ZS3224 were 52.1,41.2,19.4,and 16.0%,respectively;and the transformation efficiency of rye cultivar Lanzhou Heimai was 7.8%.Fluorescence in situ hybridization(FISH)and genomic in situ hybridization(GISH)analyses indicated that the GUS transgenes were integrated into the distal or near centromere(proximal)regions of the chromosomes in transgenic *** and hexaploid triticale *** the transgenic hexaploid triticale plants,the foreign DNA fragment was randomly integrated into the AABB and RR ***,the transgene was almost stably inherited in the next generation by Mendel’s *** findings in this study will promote the genetic improvement of the three plant species for grain or forage production and the improvement of cereal species including wheat for functional genomics studies.

关键词： Triticum monococcum hexaploid triticale rye TaWOX5 Agrobacterium transformation efficiency

基于AHP法和FBS模型的抗洪无人沙袋机设计研究

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工业设计 2023年第12期 51-55页

作者：王广琦姜勇常玉梁青岛大学机电工程学院青岛266071

为解决我国近些年洪涝灾害的频繁发生,文章首先通过定性、定量研究来了解抗洪工作中的用户需求;其次,根据AHP法构建出影响抗洪因素的指标权重,得到需求功能的优先级排序,确定抗洪沙袋机设计的关键目标;再次,利用FBS模型,通过功能映射行... 详细信息

为解决我国近些年洪涝灾害的频繁发生,文章首先通过定性、定量研究来了解抗洪工作中的用户需求;其次,根据AHP法构建出影响抗洪因素的指标权重,得到需求功能的优先级排序,确定抗洪沙袋机设计的关键目标;再次,利用FBS模型,通过功能映射行为与行为映射结构来思考沙袋机的结构化模型;最后,根据综合分析进行抗洪沙袋机设计实践。同时,也验证了AHP法与FBS模型在抗洪沙袋机产品设计中应用的可行性,从设计创新的角度提高抗洪效率,以期为保障抗洪安全提供全新的思路。

关键词：产品设计 AHP法 FBS模型抗洪无人沙袋机

同方期刊数据库博看期刊评论

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汉语语音识别系统的微型化设计

沈阳化工大学学报 1989年第3期23卷 223-228页

作者：畅玉亮佟伟光沈阳化工学院沈阳建筑工程学院

本文分析了汉语语音的特点,并在此基础上,对微型语音识别系统的硬件结构及软件设计做了较详细的讨论和说明。

关键词：识别系统语音微型机共振峰

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极化雷达的同时全极化测量与校准技术

科技导报 2011年第26期29卷 43-49页

作者：王雪松常宇亮李永祯戴幻尧何密肖顺平国防科学技术大学电子科学与工程学院长沙410073

针对传统同时全极化测量技术中存在的极化测量误差问题,介绍了基于模糊函数矩阵的同时全极化测量新方法,有效地消除了因发射信号非正交性引入的测量误差,并给出了相应的信号处理流程;针对传统极化校准技术实施难度高、校准精度差等问题... 详细信息

针对传统同时全极化测量技术中存在的极化测量误差问题,介绍了基于模糊函数矩阵的同时全极化测量新方法,有效地消除了因发射信号非正交性引入的测量误差,并给出了相应的信号处理流程;针对传统极化校准技术实施难度高、校准精度差等问题,给出了基于单个金属球定标体的极化校准新方法;基于瞬态极化雷达实验系统(KD-IPR)开展的外场试验对上述方法进行了验证。

关键词：同时全极化测量极化校准瞬态极化雷达外场试验

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一种基于NLCS的斜视SAS成像处理算法

杭州电子科技大学学报（自然科学版） 2018年第4期38卷 30-34,69页

作者：杨樊钟华常宇亮章坚武杭州电子科技大学通信工程学院浙江杭州310018

针对传统合成孔径声呐成像算法在大斜视条件下存在多普勒频移导致成像效果下降的局限性,提出在回波信号距离向去斜的同时去除其中心频率,保证了Keystone变换的有效性;并在方位向处理上引入圆模型重新构建点目标中心斜距的方位关系。仿... 详细信息

针对传统合成孔径声呐成像算法在大斜视条件下存在多普勒频移导致成像效果下降的局限性,提出在回波信号距离向去斜的同时去除其中心频率,保证了Keystone变换的有效性;并在方位向处理上引入圆模型重新构建点目标中心斜距的方位关系。仿真结果表明,在斜视条件下,所提圆模型和NLCS算法可以使边缘点获得更好聚焦效果。

关键词：合成孔径声呐 NLCS算法大斜视多普勒频移圆模型