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Validation of Regional-Scale Remote Sensing Products in China: From Site to Network

Shuguo Wang, Xin Li, Yong Ge, Rui Jin, Mingguo Ma, Qinhuo Liu, Jianguang Wen, Shaomin Liu
2016 Remote Sensing  
Validation is mandatory to quantify the reliability of remote sensing products (RSPs).  ...  The development of this VS improves our understanding of validation issues, especially to facilitate validating RSPs over heterogeneous land surfaces both at the pixel scale level and the product level  ...  in the meadow steppe [86]; Sampling strategy for observing and validating remotely sensed LAI product over heterogeneous land surface [87,88]; Development of a WSN used for validating LAI products  ... 
doi:10.3390/rs8120980 fatcat:yuvycxfe2vcidj6zj2omvnaqqu

DEVELOPMENT AND EXPERIMENTAL VERIFICATION OF KEY TECHNIQUES TO VALIDATE REMOTE SENSING PRODUCTS

X. Li, S. G. Wang, Y. Ge, R. Jin, S. M. Liu, M. G. Ma, W. Z. Shi, R. X. Li, Q. H. Liu
2013 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
This can also lay a foundation for uniting more sites and stations, as to constitute a recognized nationwide remote sensing validation network.  ...  Especially, obtaining the ground truth at pixel scale over heterogeneous land surfaces is a fundamental task to be investigated urgently.  ... 
doi:10.5194/isprsarchives-xl-2-w1-25-2013 fatcat:72qhmezru5f4lnha4lpnjv3gku

An Optimal Sampling Design for Observing and Validating Long-Term Leaf Area Index with Temporal Variations in Spatial Heterogeneities

Yelu Zeng, Jing Li, Qinhuo Liu, Yonghua Qu, Alfredo Huete, Baodong Xu, Geofei Yin, Jing Zhao
2015 Remote Sensing  
A sampling strategy to define elementary sampling units (ESUs) for an entire site at the kilometer scale is an important step in the validation process for moderate-resolution leaf area index (LAI) products  ...  The SMP approach was compared with four sampling OPEN ACCESS Remote Sens. 2015, 7 1301 strategies including random sampling, systematic sampling, sampling based on the land-cover map and a sampling strategy  ...  These improvements generate more accurate LAI reference maps and promise more accurate long-term validation over heterogeneous vegetated areas for moderate-and coarse-resolution LAI products.  ... 
doi:10.3390/rs70201300 fatcat:6tlzqghqdre35lbtivmftddco4

Mapping Biophysical Variables From Solar and Thermal Infrared Remote Sensing: Focus on Agricultural Landscapes With Spatial Heterogeneity

Frederic Jacob, Marie Weiss
2014 IEEE Geoscience and Remote Sensing Letters  
This letter closes a Special Stream that focuses on spatial heterogeneity when mapping biophysical variables over agricultural landscape from solar and thermal infrared remote sensing.  ...  resolution limit in relation to spatial heterogeneity; and 3) the definition of an optimal sampling strategy to spatialize ground measurements.  ...  Remote sensing is one of the most efficient means to capture spatial patterns related to land surface processes, at given temporal sampling and spatial resolution.  ... 
doi:10.1109/lgrs.2014.2313592 fatcat:56vvmtwykbgftp3uog7ndlunba

Wireless Sensor Network of Typical Land Surface Parameters and Its Preliminary Applications for Coarse-Resolution Remote Sensing Pixel

Baocheng Dou, Jianguang Wen, Xiuhong Li, Qiang Liu, Jingjing Peng, Qing Xiao, Zhigang Zhang, Yong Tang, Xiaodan Wu, Xingwen Lin, Dongqin You, Hua Li (+4 others)
2016 International Journal of Distributed Sensor Networks  
The preliminary applications, which validate several remote sensing products with CPP-WSN data, demonstrate that a high quality ground "truth" dataset has been available for remote sensing as well as other  ...  How to obtain the "truth" of land surface parameter as reference value to validate the remote sensing retrieved parameter in heterogeneous scene and coarse-resolution pixel is one of the most challenging  ...  land surface to assess the accuracy of remote sensing products or algorithms.  ... 
doi:10.1155/2016/9639021 fatcat:jcn7zwavvnghvemlnaibhhueza

A Prototype Network for Remote Sensing Validation in China

Mingguo Ma, Tao Che, Xin Li, Qing Xiao, Kai Zhao, Xiaoping Xin
2015 Remote Sensing  
This paper introduces a prototype of the validation network for remote sensing products in China (VRPC). The VRPC aims to improve remote sensing products at a regional scale in China.  ...  These improvements will enhance the applicability of the key remote sensing products in understanding and interpretation of typical land surface processes in China.  ...  The authors would also like to thank Youhua Ran for the preparation of Figure 3 and Yingchun Ge for the preparation of  ... 
doi:10.3390/rs70505187 fatcat:ajysivymr5g3jcagxpifqfcyt4

Developments in the 'validation' of satellite sensor products for the study of the land surface

C. Justice, A. Belward, J. Morisette, P. Lewis, J. Privette, F. Baret
2000 International Journal of Remote Sensing  
This Letter provides examples of international land product 'validation' research and describes a new international forum for coordination within the Committee on Earth Observation Satellites (CEOS) Calibration  ...  The ensuing research and policy directives that will utilize these satellite products puts a high priority on providing statements of their accuracy.  ...  Global satellite sensor product 'validation' is an important development for remote sensing.  ... 
doi:10.1080/014311600750020000 fatcat:m3hqbx52nbhgllyr4awsl6tati

A multiscale dataset for understanding complex eco-hydrological processes in a heterogeneous oasis system

Xin Li, Shaomin Liu, Qin Xiao, Mingguo Ma, Rui Jin, Tao Che, Weizhen Wang, Xiaoli Hu, Ziwei Xu, Jianguang Wen, Liangxu Wang
2017 Scientific Data  
We thank Dr Yingchun Ge for figure design.  ...  A list of participants is available at http://hiwater.westgis.ac.cn/english/. Their enthusiastic contributions are highly appreciated.  ...  Then, the upscaled ground truth can be used to validate remote sensing products and model results on heterogeneous land surfaces and quantify the uncertainty associated with heterogeneity 13 . (2) Use  ... 
doi:10.1038/sdata.2017.83 pmid:28654086 pmcid:PMC5501970 fatcat:apmwwtacgzcjlfcm45xmsx2pdq

The Complicate Observations and Multi-Parameter Land Information Constructions on Allied Telemetry Experiment (COMPLICATE)

Xin Tian, Zengyuan Li, Erxue Chen, Qinhuo Liu, Guangjian Yan, Jindi Wang, Zheng Niu, Shaojie Zhao, Xin Li, Yong Pang, Zhongbo Su, Christiaan van der Tol (+17 others)
2015 PLoS ONE  
analysis and modeling of remotely sensed information for complex land surfaces.  ...  To validate the methodologies and models for dynamic analyses of remote sensing for complex land surfaces, the second campaign consisted of simultaneous satellite-borne, airborne, and ground-based experiments  ...  Prof.Xiaowen Li played an essential role in both 973 Remote Sensing Program for CLS and COMPLI-CATE and he is greatly missed.  ... 
doi:10.1371/journal.pone.0137545 pmid:26332035 pmcid:PMC4557998 fatcat:d3z4jylfozadpnkgzmicfx6vdu

DESIGN ON VALIDATION NETWORK OF REMOTE SENSING PRODUCTS IN CHINA

M. G. Ma, X. Li, Wang Weizhen, Q. Xiao, K. Zhao, X. P. Xin
2013 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The Land Product Validation (LPV) was established by the Committee of the Earth Observation Satellites (CEOS) for proposing a consistent strategy as well as dedicated methods and tools for the validation  ...  It aims to validate global land surface remote sensing products derived from sensors of MODIS, VEGETATION, MERIS, POLDER and AVHRR.  ... 
doi:10.5194/isprsarchives-xl-2-w1-1-2013 fatcat:mvhdxqnmxncbrnddjcfqhbw2wq

Heihe Watershed Allied Telemetry Experimental Research (HiWATER): Scientific Objectives and Experimental Design

Xin Li, Guodong Cheng, Shaomin Liu, Qing Xiao, Mingguo Ma, Rui Jin, Tao Che, Qinhuo Liu, Weizhen Wang, Yuan Qi, Jianguang Wen, Hongyi Li (+8 others)
2013 Bulletin of The American Meteorological Society - (BAMS)  
The planning of HiWATER is supported by the NSFC project "Development of a Catchment-Scale Land Data Assimilation System" (Grant 40925004).  ...  In addition, the "Close Water Cycle at the River Basin Scale Using Remote Sensing Data" within the Dragon 3 program provides some satellite remote sensing data.  ...  How can we acquire ground truths at the pixel scale over heterogeneous land surfaces that can be used as a reference truth for remote sensing validation?  ... 
doi:10.1175/bams-d-12-00154 fatcat:bul5n7x7cffm5o46x244lzhimi

Heihe Watershed Allied Telemetry Experimental Research (HiWATER): Scientific Objectives and Experimental Design

Xin Li, Guodong Cheng, Shaomin Liu, Qing Xiao, Mingguo Ma, Rui Jin, Tao Che, Qinhuo Liu, Weizhen Wang, Yuan Qi, Jianguang Wen, Hongyi Li (+8 others)
2013 Bulletin of The American Meteorological Society - (BAMS)  
The planning of HiWATER is supported by the NSFC project "Development of a Catchment-Scale Land Data Assimilation System" (Grant 40925004).  ...  In addition, the "Close Water Cycle at the River Basin Scale Using Remote Sensing Data" within the Dragon 3 program provides some satellite remote sensing data.  ...  How can we acquire ground truths at the pixel scale over heterogeneous land surfaces that can be used as a reference truth for remote sensing validation?  ... 
doi:10.1175/bams-d-12-00154.1 fatcat:ndj46nu255g4fjkbys65em7wvy

Assessing the accuracy of land surface characteristics estimated from multi-angular remotely sensed data

N. Widen
2004 International Journal of Remote Sensing  
This paper presents an investigation on estimation of canopy and leaf level quantities by multidirectional remotely sensed data in three spectral bands.  ...  Scaling issues, including temporal, spectral and spatial resolution, and surface heterogeneity are not addressed in this experiment.  ...  Introduction The directional reflectance of land surfaces has been a topic of scientific interest in the remote sensing branch for over two decades.  ... 
doi:10.1080/01431160310001598953 fatcat:oehzg7rjerg5rcccw3ofprfkwy

Retrieving and Validating Leaf and Canopy Chlorophyll Content at Moderate Resolution: A Multiscale Analysis with the Sentinel-3 OLCI Sensor

Charlotte De Grave, Luca Pipia, Bastian Siegmann, Pablo Morcillo-Pallarés, Juan Pablo Rivera-Caicedo, José Moreno, Jochem Verrelst
2021 Remote Sensing  
A multiscale validation strategy was pursued.  ...  LCC, on the other hand, was poorly retrieved at the 300 m scale, showing overestimated values over heterogeneous pixels.  ...  Moreover, the authors of [17] stated that to limit the influence of spatial heterogeneity on non-linear estimation processes of land surface variables from remote sensing data, the proper pixel size  ... 
doi:10.3390/rs13081419 fatcat:vnipwex56be43ep63xbspj3jme

Spatiotemporally Representative and Cost-Efficient Sampling Design for Validation Activities in Wanglang Experimental Site

Gaofei Yin, Ainong Li, Aleixandre Verger
2017 Remote Sensing  
Spatiotemporally representative Elementary Sampling Units (ESUs) are required for capturing the temporal variations in surface spatial heterogeneity through field measurements.  ...  Our study will support the validation activities in Wanglang experimental site providing a benchmark for locating the nodes of automatic observation systems (e.g., LAINet) which need a spatially distributed  ...  Introduction Accurate spatiotemporal characterization of land surface heterogeneity [1] [2] [3] is essential for remote sensing [4] and the land surface [5] modeling.  ... 
doi:10.3390/rs9121217 fatcat:s7za6ej5bbaljni6lb2yt3ren4
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