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Effective implementation and improvement of fast labeled multi-Bernoulli filter

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Journal of Systems Engineering and Electronics 2023年第3期34卷 661-673页

作者： CHENG Xuan ji hongbing ZHANG Yongquan School of Electronic Engineering Xidian UniversityXi’an 710071China

Effective implementation of the fast labeled multi-Bernoulli(FLMB)filter is addressed for target tracking with interval ***,a sequential Monte Carlo(SMC)implementation of the FLMB filter,SMC-FLMB filter,is derived based on generalized likelihood function ***,a box particle(BP)implementation of the FLMB filter,BP-FLMB filter,is developed,with a computational complexity reduction of the SMC-FLMB ***,an improved version of the BP-FLMB filter,improved BP-FLMB(IBP-FLMB)filter,is proposed,improving its estimation accuracy and real-time performance under the conditions of low detection probability and high *** results show that the BP-FLMB filter has a great improvement of the real-time performance than the SMC-FLMB filter,with similar tracking *** with the BP-FLMB filter,the IBP-FLMB filter has better estimation performance and real-time performance under the conditions of low detection probability and high clutter.

关键词： multi-target tracking interval measurements fast labeled multi-Bernoulli(FLMB)filter sequential Monte Carlo(SMC)implementation box particle(BP)implementation

Determining CO_2 consumption from elemental change in soil profiles developed on carbonate and silicate rocks

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Chinese Journal Of Geochemistry 2015年第2期34卷 177-193页

作者： Daojing Li hongbing ji State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of Sciences College of Resource Environment and Tourism Capital Normal University

To further understand the roles of carbonate and silicate rocks in regulating the atmosphere/soil CO_2level,the flux of CO_2 consumed by the chemical weathering of silicate and carbonate rocks was determined from the elemental change in soil *** showed that the chemical weathering of carbonate rocks mainly occurred at the rock-regolith interface,and that the further weathering of the residua soil on the carbonate rocks was similar to that of the granite *** weathering of the silicate rocks occurred through the whole ***,CO_2 consumed per volume by the silicate profiles[M_(sr)(CO_2)]and the residues on carbonate rocks[M_(cr)(CO2)]were calculated based on the elemental weathering ***_2 consumed by carbonate protolith[M_(cp)(CO_2)]was calculated from the elemental change at the rock-regolith *** M_(sr)(CO_2) were about tens to thousands orders of magnitude greater than M_(cr)(CO_2).Even so,this demonstrated that the residues on carbonate rocks could be a sink of CO2_ on long-term *** M_(cp)(CO_2) was about four times larger than M_(sr)(CO_2),which demonstrated that carbonate rocks played a more important role in regulating the CO_2 level than the silicate rocks did during the pedogenic process of the profiles.

关键词：硅酸盐岩石碳酸盐岩界面元素土壤剖面二氧化碳消耗化学风化开发

A Poisson multi-Bernoulli mixture filter with spawning based on Kullback–Leibler divergence minimization

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Chinese Journal of Aeronautics 2021年第11期34卷 154-168页

作者： Zhenzhen SU hongbing ji Yongquan ZHANG School of Electronic Engineering Xidian UniversityXi’an 710071China

In the classical form,the Poisson Multi-Bernoulli Mixture(PMBM)filter uses a PMBM density to describe target birth,surviving,and death,which does not model the appearance of spawned *** such a model can handle target birth,surviving,and death well,its performance may degrade when target spawning *** reason for this is that the original PMBM filter treats the spawned targets as birth targets,ignoring the surviving targets’*** this paper,we propose a Kullback–Leibler Divergence(KLD)minimization based derivation for the PMBM prediction step,including target spawning,in which the spawned targets are modeled using a Poisson Point Process(PPP).Furthermore,to improve the computational efficiency,three approximations are used to implement the proposed algorithm,such as the Variational MultiBernoulli(VMB)filter,the Measurement-Oriented marginal MeMBer/Poisson(MOMB/P)filter,and the Track-Oriented marginal MeMBer/Poisson(TOMB/P)***,simulation results demonstrate the validity of the proposed filter by using the spawning model in these three approximations.

关键词： Kullback–Leibler Divergence Multi-target tracking PMBM filter Poisson Point Process Random finite set Target spawning

Low-temperature utilization of CO_2 and CH_4 by combining partial oxidation with reforming of methane over Ru-based catalysts

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Journal of Natural Gas Chemistry 2010年第6期19卷 575-582页

作者： hongbing ji Danyan Feng Yunbing He School of Chemistry and Chemical Engineering The Key Laboratory of Low-carbon Chemistry ＆ Energy Conservation of Guangdong Province Sun Yat-sen University Guangzhou 510275 Guangdong China

Combination of partial oxidation of methane （POM） with carbon dioxide reforming of methane （CRM） has been studied over Ru-based catalysts at 550℃.POM,CRM and combined reaction were performed over 8wt%Ru/γ-Al2O 3 and the results show that both POM and CRM contribute to the combined reaction,between which POM plays a more important ***,the addition of Ce to Ru-based catalyst results in an improvement in the activity and CO selectivity under the adopted reaction *** Ce-doped catalyst was characterized by N2 adsorption-desorption,SEM,XRD,TPR,XPS and in situ *** mechanism has been studied by in situ DRIFTS together with the temperature distribution of catalyst *** mechanism of the combined reaction is more complicated and it is the combination of POM and CRM mechanisms in *** present paper provides a new catalytic system to activate CH4 and CO2 at a rather low temperature.

关键词： combined reaction partial oxidation of methane carbon dioxide reforming of methane synthesis gas ruthenium

A robust Poisson multi-Bernoulli filter for multi-target tracking based on arithmetic average fusion

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Chinese Journal of Aeronautics 2023年第2期36卷 179-190页

作者： Zhenzhen SU hongbing ji Cong TIAN Yongquan ZHANG School of Computer Science and Technology Xidian UniversityXi'an 710071China School of Electronic Engineering Xidian UniversityXi'an 710071China

The coalescence and missed detection are two key challenges in Multi-Target Tracking(MTT).To balance the tracking accuracy and real-time performance,the existing Random Finite Set(RFS)based filters are generally difficult to handle the above problems simultaneously,such as the Track-Oriented marginal Multi-Bernoulli/Poisson(TOMB/P)and Measurement-Oriented marginal Multi-Bernoulli/Poisson(MOMB/P)*** on the Arithmetic Average(AA)fusion rule,this paper proposes a novel fusion framework for the Poisson Multi-Bernoulli(PMB)filter,which integrates both the advantages of the TOMB/P filter in dealing with missed detection and the advantages of the MOMB/P filter in dealing with *** order to fuse the different PMB distributions,the Bernoulli components in different Multi-Bernoulli(MB)distributions are associated with each other by Kullback-Leibler Divergence(KLD)***,an adaptive AA fusion rule is designed on the basis of the exponential fusion weights,which utilizes the TOMB/P and MOMB/P updates to solve these difficulties in ***,by comparing with the TOMB/P and MOMB/P filters,the performance of the proposed filter in terms of accuracy and efficiency is demonstrated in three challenging scenarios.

关键词： Arithmetic average fusion Kullback-Leibler divergence Poisson multi-Bernoulli filter Random finite set Target tracking

Performance evaluation for multi-target tracking with temporal dimension specifics

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Chinese Journal of Aeronautics 2024年第2期37卷 446-458页

作者： Zhenzhen SU hongbing ji Cong TIAN Yongquan ZHANG School of Computer Science and Technology Xidian UniversityXi’an 710071China School of Electronic Engineering Xidian UniversityXi’an 710071China

With the great development of Multi-Target Tracking(MTT)technologies,many MTT algorithms have been proposed with their own advantages and *** to the fact that requirements to MTT algorithms vary from the application scenarios,performance evaluation is significant to select an appropriate MTT algorithm for the specific application *** this paper,we propose a performance evaluation method on the sets of trajectories with temporal dimension specifics to compare the estimated trajectories with the true *** proposed method evaluates the estimate results of an MTT algorithm in terms of tracking accuracy,continuity and ***,its computation is based on a multi-dimensional assignment problem,which is formulated as a computable form using linear *** enhance the influence of recent estimated states of the trajectories in the evaluation,an attention function is used to reweight the trajectory errors at different time ***,simulation results show that the proposed performance evaluation method is able to evaluate many aspects of the MTT *** evaluations are worthy for selecting suitable MTT algorithms in different application scenarios.

关键词： Multi-target tracking Temporal dimension specifics Performance evaluation Random finite sets Linear programming

Role of catalyst surface-active sites in the hydrogenation ofα,β-unsaturated aldehyde

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Frontiers of Chemical Science and Engineering 2024年第6期18卷 41-69页

作者： Haixiang Shi Tongming Su Zuzeng Qin hongbing ji School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification TechnologyGuangxi UniversityNanning 530004China Zhejiang Green Petrochemical and Light Hydrocarbon Transformation Research Institute Zhejiang University of TechnologyHangzhou 310014China

As an important technology in fine chemical production,the selective hydrogenation ofα,β-unsaturated aldehydes has attracted much attention in recent *** the process ofα,β-unsaturated aldehyde hydrogenation,a conjugated system is formed between>C=CC=O,leading to hydrogenation at both ends of the conjugated system,which competes with each other and results in more complex ***,improving the reaction selectivity is also difficult in industrial ***,many researchers have reported that surface-active sites on catalysts play a crucial role inα,β-unsaturated aldehyde *** review attempts to summarize recent advances in understanding the effects of surface-active sites(SASs)over metal catalysts for enhancing the process of *** construction strategies and roles of SASs for hydrogenation catalysts are *** attention has been given to the adsorption configuration and transformation mechanism ofα,β-unsaturated aldehydes on catalysts,which contributes to understanding the relationship between SASs and hydrogenation *** addition,recent advances in metal-supported catalysts for the selective hydrogenation ofα,β-unsaturated aldehydes to understand the role of SASs in hydrogenation are briefly ***,the opportunities and challenges will be highlighted for the future development of the precise construction of SASs.

关键词： α,β-unsaturatedd aldehydes hydrogenation active site cinnamaldehyde

Online multi-target intelligent tracking using a deep long-short term memory network

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Chinese Journal of Aeronautics 2023年第9期36卷 313-329页

作者： Yongquan ZHANG Zhenyun SHI hongbing ji Zhenzhen SU School of Electronic Engineering Xidian UniversityXi’an 710071China School of Computer Science and Technology Xidian UniversityXi’an 710071China

Multi-target tracking is facing the difficulties of modeling uncertain motion and observation *** tracking algorithms are limited by specific models and priors that may mismatch a real-world *** this paper,considering the model-free purpose,we present an online Multi-Target Intelligent Tracking(MTIT)algorithm based on a Deep Long-Short Term Memory(DLSTM)network for complex tracking requirements,named the MTIT-DLSTM ***,to distinguish trajectories and concatenate the tracking task in a time sequence,we define a target tuple set that is the labeled Random Finite Set(RFS).Then,prediction and update blocks based on the DLSTM network are constructed to predict and estimate the state of targets,***,the prediction block can learn the movement trend from the historical state sequence,while the update block can capture the noise characteristic from the historical measurement ***,a data association scheme based on Hungarian algorithm and the heuristic track management strategy are employed to assign measurements to targets and adapt births and *** results manifest that,compared with the existing tracking algorithms,our proposed MTIT-DLSTM algorithm can improve effectively the accuracy and robustness in estimating the state of targets appearing at random positions,and be applied to linear and nonlinear multi-target tracking scenarios.

关键词： Data association Deep long-short term memory network Historical sequence Multi-target tracking Target tuple set Track management

Carbon and nitrogen isotopes analysis and sources of organic matter in the upper reaches of the Chaobai River near Beijing,China

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Science China Earth Sciences 2013年第2期56卷 217-227页

作者： LU FengYun LIU ZhuQing ji hongbing Key Laboratory of Metropolitan Eco-Environment Processes College of Resource Environment and TourismCapital Normal University College of Water Conservancy & Civil Engineering China Agricultural University The State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of Sciences

The carbon and nitrogen isotopes in the surface sediments,plants,and soil in the upper reaches of the Chaobai River have been *** results showed 27.75‰-21.58‰ and 1.32‰-6.74‰ for carbon and nitrogen isotopic ratios in the surface sediments,*** sources of sedimentary organic matter in this area are soil organic matter,aquatic vascular plants,and riverine plankton,respectively,and a significant contributor to sediment in the Chaohe River,the Baihe River,and the Miyun Reservoir areas is soil organic ***,part of sedimentary organic matter in the Miyun Reservoir is attributed to the input from the Chaohe River and the Baihe River,the other is from C4 vegetation growing around individual point stations at the Miyun *** with the situation in Hebei Province,the contribution of soil organic matter decreased significantly and river plankton and aquatic vascular plants increased significantly in Beijing municipal *** study reveals that the source of organic matter has a close relationship with the soil erosion.

关键词： carbon isotopes nitrogen isotopes organic matter Chaobai River material source