Analysis of the development trend of Chinese remote sensing validation sites and infrastructure construction
- Vol. 27, Issue 5, Pages: 1088-1098(2023)
Published： 07 May 2023
DOI： 10.11834/jrs.20231694
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摘要
遥感产品的真实性检验研究是当前遥感领域研究的热点和难点。真实性检验基础设施的建设是实现遥感产品真实性检验的关键环节。近年来，中国先后启动国家民用空间基础设施真实性检验场网（简称空基场网）和高分专项国家真实性检验场站网（简称高分站网）的建设，形成由60余个站点组成，具备40余种遥感产品检验能力的场网体系。本文在介绍了国内外已有场网的基础上，详细介绍了空基场网和高分站网的建设目标、站点组成和测量产品。结合当前空基场网和高分站网的建设现状，提出了建设中国真实性检验的思路，探讨了建设真实性检验站网的技术体系，从理论研究、标准规范制定、场网建设和产品验证评价4个方面进行分析，为中国今后真实性检验站网建设和遥感产品的真实性检验提供参考。
Abstract
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.
关键词
遥感真实性检验基础设施空基场网高分站网技术体系
Keywords
remote sensingvalidationinfrastructure site constructionGaofen station networktechnical system
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