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| 1 | Annual 30-m land use/land cover maps of China for 1980–2015 from the integration of AVHRR, MODIS and Landsat data using the BFAST algorithm显示文摘Annual land use land cover(LULC)change information at medium spatial resolution(i.e.at 30 m)is required in numerous subjects,such as biophysical modelling,land management and global change studies.Annual LULC information,however,is usually not available at continental or national scale due to reasons such as insufficient remote sensing data coverage or lack of computational capabilities.Here we integrate high temporal resolution and coarse spatial resolution satellite images(i.e.,Moderate Resolution Imaging Spectroradiometer(MODIS)and Global Inventory Modelling and Mapping Studies(GIMMS)normalized difference vegetation index(NDVI))with high spatial resolution datasets(China’s Land-Use/cover Datasets(CLUDs)derived from 30-meter Landsat TM/ETM+/OLI)to generate reliable annual nominal 30 m LULC maps for the whole of China between 1980 and 2015.We also test the performance of a statistical based change detection algorithm(Breaks for Additive Seasonal and Trend),originally designed for tracking forest change,in classifying all-type LULC change.As a result,a nominal 30 m annual land use/land cover datasets(CLUD-A)from 1980 to 2015 was developed for the whole China.The mapping results were assessed with a change sample dataset,a regional annual validation sample set and a three-year China sample set.Of the detected change years,75.61%matched the exact time of conversion within±1 year.Annual mapping results provided a detail process of urbanization,deforestation,afforestation,water and cropland dynamics over the past 36 years.The consistent characterization of land change dynamics for China can be further used in scientific research and to support land management for policy-makers. | Yidi XU Le YU Dailiang PENG Jiyao ZHAO Yuqi CHENG Xiaoxuan LIU Wei LI Ran MENG Xinliang XU Peng GONG | 2020 | Science China Earth Sciences2020，63，9： | 12 |
| 2 | Trajectory tracking control of a VTOL unmanned aerial vehicle using offset-free tracking MPC显示文摘Designing a stable and robust flight control system for an Unmanned Aerial Vehicle(UAV)is an arduous task.This paper addresses the trajectory tracking control problem of a Ducted Fan UAV(DFUAV)using offset-free Model Predictive Control(MPC)technique in the presence of various uncertainties and external disturbances.The designed strategy aims to ensure adequate flight robustness and stability while overcoming the effects of time delays,parametric uncertainties,and disturbances.The six degrees of freedom DFUAV model is divided into three flight modes based on its airspeed,namely the hover,transition,and cruise mode.The Dryden wind turbulence is applied to the DFUAV in the linear and angular velocity component.Moreover,different uncertainties such as parametric,time delays in state and input,are introduced in translational and rotational components.From the previous work,the Linear Quadratic Tracker with Integrator(LQTI)is used for comparison to corroborate the performance of the designed controller.Simulations are computed to investigate the control performance for the aforementioned modes and different flight phases including the autonomous flight to validate the performance of the designed strategy.Finally,discussions are provided to demonstrate the effectiveness of the given methodology. | Tayyab MANZOOR Yuanqing XIA Di-Hua ZHAI Dailiang MA | 2020 | Chinese Journal of Aeronautics2020，33，7： | 10 |
| 3 | Optimal midcourse trajectory cluster generation and trajectory modification for hypersonic interceptions显示文摘The hypersonic interception in near space is a great challenge because of the target's unpredictable trajectory, which demands the interceptors of trajectory cluster coverage of the predicted area and optimal trajectory modification capability aiming at the consistently updating predicted impact point(PIP) in the midcourse phase. A novel midcourse optimal trajectory cluster generation and trajectory modification algorithm is proposed based on the neighboring optimal control theory. Firstly, the midcourse trajectory optimization problem is introduced; the necessary conditions for the optimal control and the transversality constraints are given.Secondly, with the description of the neighboring optimal trajectory existence theory(NOTET), the neighboring optimal control(NOC)algorithm is derived by taking the second order partial derivations with the necessary conditions and transversality conditions. The revised terminal constraints are reversely integrated to the initial time and the perturbations of the co-states are further expressed with the states deviations and terminal constraints modifications.Thirdly, the simulations of two different scenarios are carried out and the results prove the effectiveness and optimality of the proposed method. | Humin Lei Jin Zhou Dailiang Zhai Lei Shao Dayuan Zhang | 2017 | Journal of Systems Engineering and Electronics2017，28，6： | 10 |
| 4 | MODIS observations of water color of the largest 10 lakes in China between 2000 and 2012显示文摘Forel-Ule(FU)index of water color is an important parameter in traditional water quality investigations.We retrieved the FU index of the largest 10 lakes in China during 2000-2012 from MODerate-resolution Imaging Spectroradiometer surface reflectance product(MOD09)images.Since FU index is an optical parameter,it can be derived from optical remote sensing data by direct formulas,which is invariant with region and season.Based on validation by in situ measured reflectance data,the FU index products are reliable,with average relative error of 7.7%.FU index can be used to roughly assess water clarity:the clearer a water body is,and the bluer it is in color,the smaller its FU index is.FU index can also be used to roughly classify trophic state into three classes:oligotrophic,mesotrophic,and eutrophic.We analyzed the spatial,interannual,and seasonal variations of the FU index and its implications for water clarity and trophic state,and the findings are mostly consistent with the results from related literature.All in all,it might be a feasible way to roughly assess inland water quality by FU index in large region and over long time period. | Junsheng Li Shenglei Wang Yanhong Wu Bing Zhang Xiaoling Chen Fangfang Zhang Qian Shen Dailiang Peng Liqiao Tian | 2016 | International Journal of Digital Earth2016，9，8： | 5 |
| 5 | Detection and estimation of mixed paddy rice cropping patterns with MODIS data显示文摘 | Dailiang Peng Alfredo R. Huete Jingfeng Huang Fuming Wang Huasheng Sun | 2010 | International Journal of Applied Earth Observations and Geoinformation2010，，1： | 2 |
| 6 | Seasonal dynamic pattern analysis on global FPAR derived from AVHRR GIMMS NDVI显示文摘The purpose of this paper is to develop Advanced Very High Resolution Radiometer(AVHRR)Global Inventory Modelling and Mapping Studies(GIMMS)Normalised Difference Vegetation Index(NDVI;AVHRR GIMMS NDVI for short)based fraction of absorbed photosynthetically active radiation(FPAR)from 1982 to 2006 and focus on their seasonal and spatial patterns analysis.The available relationship between FPAR and NDVI was used to calculate FPAR values from 1982 to 2006 and validated by Moderate-resolution Imaging Spectroradiometer(MODIS)FPAR product.Then,the seasonal dynamic patterns were analysed,as well as the driving force of climatic factors.Results showed that there was an agreement between FPAR values from this study and those of the MODIS product in seasonal dynamic,and the spatial patterns of FPARvary with vegetation type distribution and seasonal cycles.The time series of average FPAR revealed a strong seasonal variation,regular periodic variations from January 1982 to December 2006,and opposite patterns between the Northern and Southern Hemispheres.Evergreen vegetation FPARvalues were close to 0.7.A clear single-peak curve was observed between 308N and 808N?an area covered by deciduous vegetation.In the Southern Hemisphere,the time series fluctuations of FPAR averaged by 0.78 latitude zones were not clear compared to those in the Northern Hemisphere.A significant positive correlation(PB0.01)was observed between the seasonal variation of temperature and precipitation and FPAR over most other global meteorological sites. | Dailiang Peng Bing Zhang Liangyun Liu Dongmei Chen Hongliang Fang Yong Hu | 2012 | International Journal of Digital Earth2012，5，5： | 2 |
| 7 | Gas-oil twophase flow measurement using an electrical capacitance tomography system and a Venturi meter显示文摘 | Huang Zhiyao Xie Dailiang Zhang Hongjian | 2005 | Flow Meusurement and Instrumentation2005，16，23： | 1 |
| 8 | Gasoil two-phase flow measurement using an electrical capacitance tomography system and a Venturi meter显示文摘 | Huang Zhiyao Xie Dailiang Zhang Hongjiang | | 0，，23： | 1 |
| 9 | Gas-oil two- phase flow measurement using an ecectrical capacitance tomography system and a Venturi meter显示文摘 | Huang Zhiyao Xie Dailiang Zhang Hongjian | 2005 | Flow Measurement and Instrument2005，16，2： | 1 |
| 10 | Gas-oil two-phase flow measurement using an electrical capacitance tomography system and a Venturi meter 显示文摘 | Huang Zhiyao Xie Dailiang Zhang Hongjian | 2005 | Flow Measurement and Instrument2005，16，23： | 1 |
| 11 | Gas-oil two-phase flow measurement using an electrical capacitance tomography system and a venturi meter显示文摘 | Hang Zhiyao Xie Dailiang Zhang Hongjian | 2005 | Flow Measurement and Instrumentation2005，16，23： | 1 |
| 12 | Gas-oil two-phase flow measurement using an electrical capacitance tomography system and a Venturi meter 显示文摘 | Huang Zhiyao Xie Dailiang Zhang Hongjian | 2005 | Flow Meas Instru2005，16，2： | 1 |
| 13 | Gas-oil Two-phase Flow Measurement Using An Electrical Capacitance Tomography System and a Venturi meter显示文摘 | Zhiyao Huang Dailiang Xie Hongjian Zhang | 2005 | Flow Measurement and Instrumentation2005，16，： | 1 |
| 14 | Recent advances on the construction of encapsulated catalyst for catalytic applications显示文摘In heterogeneous catalytic reactions,supported metal catalysts have attracted increasing attention for the environmental remediation and industrial manufacture due to their inherent catalytic capacity.However,leaching,agglomeration,and poisoning of active metal particles lead to catalyst deactivation,thereby limiting their applications.To avoid this,strategies to protect the active metals from such inactivating processes are major areas of research.Emerging encapsulation strategies,in which active species are coated by protective shells,have proven to be a powerful technology to enhance catalytic performance by creating a well-developed structure about the active catalytic sites.This review highlights the recent advances on preparation method and application of encapsulated catalysts since 2016.Building upon the traditional confinement effect,new categories and extended concepts of encapsulation are introduced.In parallel,effects of encapsulation structure on performance and key factors controlling the structure of encapsulated catalyst are discussed definitely in this review.Finally,future perspectives on opportunities and challenges for further research in the field are given at the end of this paper. | Minghui Li Yaning Yang Dailiang Yu Wenwen Li Xin Ning Rui Wan Hongjie Zhu Junjie Mao | 2023 | Nano Research2023，16，2： | 1 |
| 15 | Characteristics and drivers of global NDVI-based FPAR from 1982 to 2006显示文摘 | Peng Dailiang Zhang Bing Liu Liangyun Fang Hongliang Chen Dongmei Hu Yong Liu Lingling | 2012 | EN2012，，3： | 1 |
| 16 | Detection and estimation of mixed paddy rice cropping patterns with MODIS data显示文摘 | Peng Dailiang Huete A R Huang Jingfeng | 2011 | International Journal of Applied Earth Observation and Geoinformation2011，13，1： | 1 |
| 17 | Detection and estimation of mixed paddy rice cropping patterns with MODIS data显示文摘 | Dailiang Peng Alfredo R. Huete Jingfeng Huang Fuming Wang Huasheng Sun | 2010 | International Journal of Applied Earth Observations and Geoinformation2010，，1： | 1 |
| 18 | Comparing spatiotemporal patterns in Eurasian FPAR derived from two NDVI-based methods显示文摘A long-term,consistent Fraction of Absorbed Photosynthetically Active Radiation(FPAR)product is necessary to study the spatial and temporal patterns of vegetation dynamics associated with climatic changes and human activities.In this study,Eurasia was selected as the study area.The relationship between FPAR and simple infrared/red ratio relationship(SR FPAR),and that between Moderate Resolution Imaging Spectroradiometer(MODIS)FPAR and a Normalised Difference Vegetation Index(NDVI)look-up table(LUT FPAR)were employed to estimate FPAR from 1982 to 2006 by different land cover types,focusing on the comparisons of spatiotemporal FPAR patterns between the two FPAR datasets.The results showed high agreement between MODIS standard FPAR and estimated FPAR in seasonal dynamics with peak values in July.The LUT FPAR was close to MODIS standard FPAR and larger than SR FPAR.The SR and LUT FPAR showed the same spatial distribution and inter-annual variation patterns and were primarily determined by land cover types.An overall increasing trend in FPAR was observed from 1982 to 2006,with reductions from 1991 to 1994 and 2000 to 2002.The inter-annual dynamics in evergreen broadleaf forests showed a decreasing trend over 25 years,while non-forest vegetation FPAR values had slow,stable growth in inter-annual variation. | Dailiang Peng Bing Zhang Liangyun Liu | 2012 | International Journal of Digital Earth2012，5，4： | 1 |
| 19 | Gas-Oil Two-Phase Flow Measurement Using an Electri- cal Capacitance Tomography System and a Venturi Me- ter 显示文摘 | HANG Zhiyao XIE Dailiang ZHANG Hongjian | 2005 | Flow Measurement and Instrumentation2005，16，23： | 1 |
| 20 | Detection and estimation of mixed paddy rice cropping patterns with MODIS data显示文摘 | Peng Dailiang Huete A R Huang Jingfeng | 2011 | International Journal of Applied Earth Observation and Geoinformation2011，13，1： | 1 |
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