предыдущий|следующий

Analysis of the development trend of Chinese remote sensing validation sites and infrastructure construction

  • role： First author第一作者
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

    University of Chinese Academy of Science, Beijing 100049, China

  • Email：gaohl@radi.ac.cn
  • Introduction：高海亮，研究方向为遥感辐射定标和真实性检验。E-mail： gaohl@radi.ac.cn
GAO Hailiang12,  
  • role： Corresponding author通信作者
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

  • Email：guxf@radi.ac.cn
  • Introduction：顾行发，研究方向为定量遥感。E-mail：guxf@radi.ac.cn
GU Xingfa1*,  
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

ZHOU Xiang1,  
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

YU Tao1,  
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

    University of Chinese Academy of Science, Beijing 100049, China

WANG Yixue12

реферат

The validation of remote sensing products is a challenging and critical aspect of remote sensing research. The construction of validation infrastructure is key in validating remote sensing products. In recent years, China has successively launched the construction of the National Civil Space Infrastructure Validation Test Sites Network (Space-based Site Network) and the Gaofen National Validation Test Site Network (Gaofen Site Network), forming a network system with over 60 test sites and the ability to validate more than 40 types of remote sensing products. This paper analyzes and summarizes the validation infrastructure internationally and identifies three categories of validation infrastructure: automatic observation networks for atmospheric and ground surface parameters, observation test site networks for ecological parameters with automatic and manual measurements, and temporary experimental sites based on large-scale comprehensive experiments. The paper provides a detailed introduction to the test site selection principles, number of test sites, and product types for the Space-based Site Network and Gaofen Site Network. The differences between the two networks are also analyzed, and the preliminary results of each network are presented. The Space-based Site Network consists of 48 test sites and has the ability to validate 24 common remote sensing products in six categories. It is a business-oriented network that focuses more on long-term business measurement, using unified measurement equipment for measurement. On the contrary, the Gaofen Site Network is a research-based network with a focus on research on measurement theory and methods, as well as the development of standard specifications. It consists of 42 test sites and has the ability to validate 41 common remote sensing products in seven categories, mainly relying on the site’s own equipment for measurement. The paper proposes the idea of building a validation test site network in China based on the current construction status of the Space-based Site Network and Gaofen Site Network. It explores the technical system for building a validation test network and analyzes it from four aspects: theoretical research, standard specification formulation and optimization, validation test site network construction, and remote sensing product validation and evaluation. This paper provides a reference for the future construction of validation test site networks and the validation of remote sensing products in China. In the future, it is essential to intensify relevant theoretical research and test site network construction, and combine the development plan of validation in China to do a good job in the top-level design of the validation test site system. It is also necessary to further improve the established validation test site network system, improve the accuracy and frequency of site measurement data, accelerate the commercialization of network operation and the release of validation reports, and continuously improve the Space-based Site Network and Gaofen Site Network system to provide support for China’s Earth observation system and promote the development of quantitative remote sensing in China.

ключеви́че слова́

remote sensing;validation;infrastructure site construction;Gaofen station network;Technical system

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