Validation of Regional-Scale Remote Sensing Products in China: From Site to Network
Validation is mandatory to quantify the reliability of remote sensing products (RSPs). However, this process is not straightforward and usually presents formidable challenges in terms of both theory and real-world operations. In this context, a dedicated validation initiative was launched in China,...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2016-11-01
|
Series: | Remote Sensing |
Subjects: | |
Online Access: | http://www.mdpi.com/2072-4292/8/12/980 |
id |
doaj-fde0f43f98d246c6b0ebf23c8fdefe14 |
---|---|
record_format |
Article |
spelling |
doaj-fde0f43f98d246c6b0ebf23c8fdefe142020-11-24T23:53:22ZengMDPI AGRemote Sensing2072-42922016-11-0181298010.3390/rs8120980rs8120980Validation of Regional-Scale Remote Sensing Products in China: From Site to NetworkShuguo Wang0Xin Li1Yong Ge2Rui Jin3Mingguo Ma4Qinhuo Liu5Jianguang Wen6Shaomin Liu7School of Geography, Geomatics and Planning, Jiangsu Normal University, No. 101 Shanghai Road, Xuzhou 221116, ChinaKey Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, ChinaKey Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, No. 20A Datun Road, Beijing 100101, ChinaState Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, ChinaValidation is mandatory to quantify the reliability of remote sensing products (RSPs). However, this process is not straightforward and usually presents formidable challenges in terms of both theory and real-world operations. In this context, a dedicated validation initiative was launched in China, and we identified a validation strategy (VS). This overall VS focuses on validating regional-scale RSPs with a systematic site-to-network concept, consisting of four main components: (1) general guidelines and technical specifications to guide users in validating various land RSPs, particularly aiming to further develop in situ sampling schemes and scaling approaches to acquire ground truth at the pixel scale over heterogeneous surfaces; (2) sound site-based validation activities, conducted through multi-scale, multi-platform, and multi-source observations to experimentally examine and improve the first component; (3) a national validation network to allow for comprehensive assessment of RSPs from site or regional scales to the national scale across various zones; and (4) an operational RSP evaluation system to implement operational validation applications. Research progress on the development of these four components is described in this paper. Some representative research results, with respect to the development of sampling methods and site-based validation activities, are also highlighted. 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.http://www.mdpi.com/2072-4292/8/12/980validationremote sensing producttechnical specificationsamplingground truthpixel scaleheterogeneous surface |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shuguo Wang Xin Li Yong Ge Rui Jin Mingguo Ma Qinhuo Liu Jianguang Wen Shaomin Liu |
spellingShingle |
Shuguo Wang Xin Li Yong Ge Rui Jin Mingguo Ma Qinhuo Liu Jianguang Wen Shaomin Liu Validation of Regional-Scale Remote Sensing Products in China: From Site to Network Remote Sensing validation remote sensing product technical specification sampling ground truth pixel scale heterogeneous surface |
author_facet |
Shuguo Wang Xin Li Yong Ge Rui Jin Mingguo Ma Qinhuo Liu Jianguang Wen Shaomin Liu |
author_sort |
Shuguo Wang |
title |
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network |
title_short |
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network |
title_full |
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network |
title_fullStr |
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network |
title_full_unstemmed |
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network |
title_sort |
validation of regional-scale remote sensing products in china: from site to network |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2016-11-01 |
description |
Validation is mandatory to quantify the reliability of remote sensing products (RSPs). However, this process is not straightforward and usually presents formidable challenges in terms of both theory and real-world operations. In this context, a dedicated validation initiative was launched in China, and we identified a validation strategy (VS). This overall VS focuses on validating regional-scale RSPs with a systematic site-to-network concept, consisting of four main components: (1) general guidelines and technical specifications to guide users in validating various land RSPs, particularly aiming to further develop in situ sampling schemes and scaling approaches to acquire ground truth at the pixel scale over heterogeneous surfaces; (2) sound site-based validation activities, conducted through multi-scale, multi-platform, and multi-source observations to experimentally examine and improve the first component; (3) a national validation network to allow for comprehensive assessment of RSPs from site or regional scales to the national scale across various zones; and (4) an operational RSP evaluation system to implement operational validation applications. Research progress on the development of these four components is described in this paper. Some representative research results, with respect to the development of sampling methods and site-based validation activities, are also highlighted. 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. |
topic |
validation remote sensing product technical specification sampling ground truth pixel scale heterogeneous surface |
url |
http://www.mdpi.com/2072-4292/8/12/980 |
work_keys_str_mv |
AT shuguowang validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT xinli validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT yongge validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT ruijin validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT mingguoma validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT qinhuoliu validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT jianguangwen validationofregionalscaleremotesensingproductsinchinafromsitetonetwork AT shaominliu validationofregionalscaleremotesensingproductsinchinafromsitetonetwork |
_version_ |
1725470101717647360 |