Research on classification of GF satellite data application products and construction of common product system
- Vol. 27, Issue 3, Pages: 563-572(2023)
Published： 07 March 2023
DOI： 10.11834/jrs.20232593
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摘要
高分辨率对地观测系统重大专项（以下简称“高分专项”）部署建设国家真实性检验系统，目的是形成对高分共性产品进行真实性检验的能力，打造共性产品批量化生产能力，整体提高中国的高分遥感定量化应用水平。此项工作中，如何界定共性产品、共性产品之间及其与专题产品之间存在哪些生成关系是首要解决的问题。围绕这些问题，本文提出了高分专项国家真实性检验系统的总体架构，定义了高分共性产品的范畴及分级方法，探讨了共性产品体系的构建流程，以农业和交通为例，分析推导了行业专题产品生产中对共性产品的需求，进一步地，以产品树的形式推导了共性产品之间的衍生关系，明确了真实性检验系统的检验对象和应着力攻关的产品目录，对于该系统的实施具有重要的指导意义。
Abstract
The major special deployment of the High Resolution Earth observation system is to build a national validation system for common products. The purpose is to form the ability to verify the authenticity of high resolution common products
build the mass production capacity of common products
and improve the overall level of quantitative application of high resolution remote sensing in China. Therefore
how to define common products
what are common products
what are the generating relationships between common products
and between common products and thematic products is a problem that must be solved first. Focusing on these problems
this paper proposes the overall architecture of the national authenticity inspection system for high resolution special projects
that is
the bottom layer is the authenticity inspection station network observation subsystem
building a authenticity inspection station network composed of 42 stations
obtaining the actual authenticity inspection data through sensors
unmanned aerial vehicles and manual measurement
and collecting them in the system database of the middle layer in real time. The middle layer is a subsystem of authenticity inspection and finalization of common products
with integrated data management and sharing
authenticity inspection station network management
authenticity inspection of common products
algorithm model integration testing and finalization of common products and other functions. The top layer is the national remote sensing data and application service platform
which is the portal for authenticity testing. This paper defines the category and grading method of high resolution common products
that is
the standard products are divided into 0—2 levels
which refer to the original image data generated by the special ground system for high resolution
or the image data after system geometric correction and/or radiometric correction; Common products are divided into 3 to 5 levels
which refers to the data obtained by the high resolution special application system using quantitative remote sensing feature parameter inversion method based on standard products as the production input of at least two industry specific products; Thematic products are classified into 6—7 levels
which refer to the data supporting the business application of the industry and department obtained by professional users using quantitative remote sensing characteristic parameter inversion method or multi-source data superposition analysis method based on standard products or generic products. The paper discusses the construction process of the generic product system. Taking agriculture and transportation as examples
it analyzes and deduces the demand for generic products in the production of industry specific products. Furthermore
it deduces the derivative relationship between generic products in the form of product tree
and clarifies the inspection object of the authenticity inspection system and the product catalog that should be focused on
which has important guiding significance for the implementation of the system. After the completion and operation of the national authenticity inspection system
in a sense
it will become a “challenge arena” for common product algorithms. Any algorithm that has been proved to be better through algorithm evaluation will be integrated into the system to replace the original algorithm. These algorithms will also further update the generation process of existing common products iteratively
which will promote each other.
关键词
高分卫星共性产品专题产品产品体系产品分级真实性检验系统
Keywords
GF satellitecommon productthematic productproduct systemproduct classificationauthenticity inspection system
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College of Resources and Environment, University of Chinese Academy of Sciences
College of Earth and Environmental Sciences, Lanzhou University
College of Geography and Environmental Sciences, Zhejiang Normal University
State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences
Earth Observation System and Data Center, China National Space Administration
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