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On Designing Consistent Extended Kalman Filter

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Journal of Systems Science & Complexity 2017年第4期30卷 751-764页

作者： jiang yanguang HUANG Yi XUE Wenchao FANG Haitao Beijing Institute of Control&Electronics Technology Beijing 100038China Key Laboratory of Systems and Control Academy of Mathematics and Systems Scienceand National Center for Mathematics and Interdisciplinary SciencesChinese Academy of SciencesBeijing 100190China

This paper studies the consistency of the extended Kalman filter(EKF) for a kind of nonlinear systems. Based on the EKF algorithm, the authors propose the quasi-consistent EKF(QCEKF)as well as the tuning law for its parameters. The quasi-consistency of the proposed algorithm is ***, the feasibility of the algorithm is illustrated by the numerical simulation on an orbit determination example.

关键词： Extended Kalman filter (EKF) consistency nonlinear system.

山西省某预查区本溪组砂岩地层对铝土矿矿床的影响分析

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轻金属 2022年第10期 5-9页

作者：张冬华姜焱光任大陆山西师范大学地理科学学院山西太原030000 山西师范大学现代文理学院山西临汾041000 山西省地质勘查局二一三地质队有限公司山西临汾041000

山西省铝土矿赋存在本溪组一段地层中下部,在省内分布广泛,资源总量位居全国第一。预查工作前期通过在地表零星出露的本溪组地层捡块化验确定区内赋存有铝土矿,然而通过进一步的勘查工作发现区内有40%钻探工程中本溪组地层以砂岩为主,... 详细信息

山西省铝土矿赋存在本溪组一段地层中下部,在省内分布广泛,资源总量位居全国第一。预查工作前期通过在地表零星出露的本溪组地层捡块化验确定区内赋存有铝土矿,然而通过进一步的勘查工作发现区内有40%钻探工程中本溪组地层以砂岩为主,未见铝土矿层。文章通过研究区地质背景、地质特征,结合区内钻探岩芯、薄片鉴定结果,从沉积环境、地层、砂岩特征等方面分析了区内本溪组砂岩地层对铝土矿矿床的影响,探求本溪组地层未见铝土矿层的原因。结果表明:研究区本溪组的沉积环境水动力强、沉积物源来源较远,不利于铝土矿的沉积,导致矿体不连续,找矿效果不及预期。如在铝土矿勘查中出现本溪组地层以砂岩地层为主的情况时应审慎开展进一步的工作,提高勘查资金利用效率。

关键词：铝土矿砂岩矿床影响分析

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拟一致无迹卡尔曼滤波算法

系统科学与数学 2017年第4期37卷 965-977页

作者：蒋衍光黄一薛文超方海涛北京控制与电子技术研究所北京100038 中国科学院数学与系统科学研究院系统控制重点实验室国家数学与交叉科学中心北京100190

针对一般的非线性系统,研究了无迹卡尔曼滤波(UKF)算法的一致性问题.通过对传统UKF算法的修正,提出了拟一致UKF(QCUKF)算法,同时给出了修正参数的选取准则,并且在理论上证明了所提算法的拟一致性.当算法具有拟一致性时,估计精度可被实... 详细信息

针对一般的非线性系统,研究了无迹卡尔曼滤波(UKF)算法的一致性问题.通过对传统UKF算法的修正,提出了拟一致UKF(QCUKF)算法,同时给出了修正参数的选取准则,并且在理论上证明了所提算法的拟一致性.当算法具有拟一致性时,估计精度可被实时评估.最后,通过仿真实例说明了所提算法的可行性以及拟一致性.

关键词：无迹卡尔曼滤波(UKF) 一致性非线性系统精度评估

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山西省襄汾县滑坡成因分析

山西师范大学学报（自然科学版） 2024年第2期38卷 85-89页

作者：张冬华姜焱光山西师范大学地理科学学院山西太原030031 山西师范大学现代文理学院山西临汾041000 山西省地质勘查局二一三地质队山西临汾041000

以山西省襄汾县为研究对象,分析了研究区的气象、水文、地形地貌、人类工程活动、地质构造及地震情况.结果表明采矿形成的山体滑坡主要是由采空区塌陷变形引发地表山体表层松散岩土体向下滑动形成;自然形成的滑坡主要是由于山区沟谷发育... 详细信息

以山西省襄汾县为研究对象,分析了研究区的气象、水文、地形地貌、人类工程活动、地质构造及地震情况.结果表明采矿形成的山体滑坡主要是由采空区塌陷变形引发地表山体表层松散岩土体向下滑动形成;自然形成的滑坡主要是由于山区沟谷发育,坡体前缘有临空面,具易软化的土岩接合层,土体节理裂隙发育以及集中的降雨条件和人类活动综合原因形成.

关键词：襄汾县滑坡成因分析

Comparative study of the adsorption performance of NH_(2)-functionalized metal organic frameworks with activated carbon composites for the treatment of phenolic wastewaters

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Chinese Journal of Chemical Engineering 2023年第11期63卷 130-139页

作者： Bolong jiang Shunjie Shi Yanyan Cui Jiayou Li Nan jiang yanguang Chen Innovation Institute for Sustainable Maritime Architecture Research and Technology Qingdao University of TechnologyQingdao 266000China College of Chemistry and Chemical Engineering Northeast Petroleum UniversityDaqing 163318China Institute of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266000China

To better understand the role of the-NH_(2)group in adsorption process of phenolic wastewaters,NH_(2)-functionalized MIL-53(Al)composites with activated carbon(NH_(2)-M(Al)@(B)AC)were *** results showed that the-NH_(2)group could increase the mesopore volume for composites,which promotes mass transfer and full utilization of active sites,because hierarchical mesopore structure makes the adsorbent easier to enter the internal adsorption ***,the introduction of the-NH_(2)group can improve the adsorption capacity,decrease the activation energy,and enhance the interaction between the adsorbent and p-nitrophenol,demonstrating that the-NH_(2)group plays a crucial role in the adsorption of *** density functional theory calculation results show that the H-bond interaction between the-NH_(2)group in the adsorbent and the-NO_(2)in the p-nitrophenol(adsorption energy of -35.5 kJ·mol^(-1)),and base-acid interaction between the primary-NH_(2)group in the adsorbent and the acidic-OH group in the p-nitrophenol(adsorption energy of -27.3 kJ·mol^(-1))are predominant mechanisms for adsorption in terms of the NH_(2)-functionalized *** NH_(2)-functionalized M(Al)@AC and M(Al)@BAC composites exhibited higher p-nitrophenol adsorption capacity than corresponding nonfunctionalized *** the composites,the NH_(2)-M(Al)@BAC had the highest p-nitrophenol adsorption capacity of 474 mg·g^(-1).

关键词： NH_(2)-functionalized adsorbent Phenolic wastewaters Adsorption Mechanism Density functional theory

Palaeo-sea-ice changes on the North Icelandic shelf during the last millennium:Evidence from diatom records

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Science China Earth Sciences 2015年第6期58卷 962-970页

作者： SHA LongBin jiang Hui LIU yanguang ZHAO MeiXun LI DongLing CHEN ZhenLou ZHAO Yun Key Laboratory of Geographic Information Science East China Normal University Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyState Oceanic Administration Key Laboratory of Marine Chemistry Theory and Technology of the Ministry of Education Ocean University of China Department of City Science Ningbo University

A high resolution record of sea-ice concentration on the North Icelandic shelf during the last millennium has been reconstructed using a diatom-based sea-ice transfer function. The reconstructed sea-ice record for the top of sediment core MD99–2275 exhibits a slightly increasing trend over the last 1000 years. Prior to AD 1300 sea-ice abundance was generally below the mean value, suggesting the strong influence of warm waters from the Irminger Current during the Medieval Warm Period. A marked increase of sea-ice concentration indicates an abrupt change to colder conditions after AD 1300, corresponding to the onset of the Little Ice Age. The agreement between the reconstructed sea-ice concentration and IP25 data obtained from the same core, as well as with historical records of Icelandic sea ice, suggests that diatoms may provide a valuable tool for future quantitative reconstructions of past sea-ice variability. In addition, agreement between changes in the reconstructed sea-ice record and variations in the abundance of the major diatom components indicates that sea-ice conditions on the North Icelandic shelf are generally strongly influenced by changes in the strength of two different water masses, the cold Polar water periodically derived from the East Greenland Current and the warm Irminger Current derived from the North Atlantic Current. Our proxy evidence also indicates that variations in solar activity have a considerable impact on ocean dynamics, which in turn affects sea-ice abundance.

关键词： palaeo-sea-ice changes North Icelandic shelf Medieval Warm Period Little Ice Age

Tectonic evolvement of metamorphic complexes at Jilin paleocontinental margin during the transition from late Archaean to early Proterozoic

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Science China Earth Sciences 2004年第11期47卷 995-1007页

作者： SUN Zhongshi DENG Jun jiang Yanguo WANG Jianping WANG Qingfei WEI yanguang Department of Earth Sciences Jilin UniversityChangchun 130061China Department of Geosciences and Mineral Resources China University of GeosciencesBeijing 100083China Weihai Gold Institute Shandong Weihai Gold BureauWeihai 264205China

The kinematics and dynamical process of tectonic evolvement of metamorphic complexes at the interim from late Archaean to early Proterozoic is one of the key problems in geosciences. For the disputation on the genesis of metamorphic complexes at the margin of Jilin palaeocontinent, this paper takes the example of Banshigou region, Jilin Province to discuss the dynamical evolution of palaeocontinent during the transition from late Archaean to early Pro- terozoic (2600—2000 Ma). On the time sequence, from center to palaeocontinental margin, it shows a series of dynamical movements including underplating, horizontal movement, subduc- tion, intraplate extension and separation. And its corresponding sequence of kinematical modes is as follows: vertical movement, horizontal movement, extension and shearing in contact zone, uplift-sliding movement in paleocontinental margin and interformational sliding, resulting in such tectonite sequence, tectonic gneiss, gneissic complex, gneissic complex-mylonite, mylonite and fracture cleavage-mylonite, which consist of the main body of metamorphic complexes. Their palaeostresses are: < 20, 20.40, 21.72, 28.80 and 30.8-69.8 MPa respectively. The deforma- tional metamorphic temperature is between hornblende and low-grade greenschist facies. The general deformational characters of Jilin palaeocontinent reflect a complete dynamic system of crust evolution, which indicates that the formation of the metamorphic complexes and the tec- tonic evolution are altered from vertical movement to compression to extension. It also indicates a continuous tectonic transformation from deep to shallow, and from ductile to brittle. The trans- formation between different dynamic mechanisms not only forms tectonic rocks, but also benefits the linking up, exchange and enrichment with rock-forming minerals and ore-forming elements. This research is helpful to classifying regional tectonic events and making further study on the evolution of palaeocontinental d

关键词： ate Archaean-early Proterozoic metamorphic complex tectonic evolution Jilin

One pot cascade synthesis of substituted 1,2,4-triazol-3-ones

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Chinese Science Bulletin 2010年第25期55卷 2879-2884页

作者： SU YeHua jiang Zhen HONG Deng LIN XianFu WANG yanguang Department of Chemistry Zhejiang University Hangzhou 310027 China

Substituted triazolinones were prepared by a three-component reaction of aldehydes,hydrazines and azodicarboxylates using TFA as a catalyst. The procedure was convenient and efficient,utilizing readily available subst... 详细信息

关键词：级联过程合成三唑反式脂肪酸锅催化剂三组分醛

Evolution of the North Atlantic Current and Barents Ice Sheet as revealed by grain size populations in the northern Norwegian Sea during the last 60 ka

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Acta Oceanologica Sinica 2021年第10期40卷 106-117页

作者： Weiguo Wang Mengwei Zhao yanguang Liu Min jiang Chengqiang Wu Yang Liu Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237China First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China School of Earth Sciences Lanzhou UniversityLanzhou 730000China

The grain size distribution of bulk sediment samples was decomposed in a core to reconstruct paleoceanographic evolution over the past 60 ka in the northern Norwegian *** results show that sediments consisted of 3–4 grain populations derived from the North Atlantic Current(NAC)and Barents Ice Sheet(BIS).The grain size data suggest three palaeoceanographic evolution stages:(1)an environment affected by BIS and NAC and changed with the interstadial/stadial transition in phase with the Greenland ice-core record at 60–31 ka BP,during which discharge of icebergs and the content of the coarsest population containing ice-rafted debris(IRD)in the sediments increased significantly during stadial,while the fine silt population containing volcanic glasses increased with the enhancement of NAC during the interstadial;(2)an extreme environment controlled by BIS at31–13 ka *** reached to its maximum at about 31 ka BP and the turbid plumes that formed at the leading edge of BIS contributed to a significant increase in the clayey population in *** drained into the northern Norwegian Sea with periodical calving of the BIS at 31–19 ka ***,the ablation of the BIS discharged massive floods with clayey sediments and icebergs into the Norwegian Sea at 19–13 ka BP,resulting in a constant increase in clay and IRD in sediments;and(3)a marine environment similar to the present one under the strong influence of NAC following the complete melting of the BIS after 13 ka BP,NAC is the dominant transport agent and no IRD occurred in *** fine silt populations containing volcanic glasses transported by NAC significantly increased.

关键词： Norwegian Sea sediments grain size population North Atlantic Current Barents Ice Sheet paleoceanography last glacial