QUALITY VERIFICATION OF OVERALL PLANNING SATELLITE REMOTE SENSING IMAGES PRODUCT FOR REAL 3D CHINA CONSTRUCTION PROJECT

Abstract. The overall planning of satellite remote sensing image products is an important part of the real 3D China construction project and an important measure for the overall management of remote sensing images. During the two years of implementation of the project in 2021 and 2022, we have organized and completed 9 versions of 2-meter resolution satellite remote sensing image products, each of which covers the land territory of the whole country (not less than 95% in principle). Image products are widely used in natural resources investigation and monitoring, basic surveying and mapping, geological survey, natural resources supervision, law enforcement and other fields, which effectively improves the guarantee capability of surveying and mapping geographic information services. Taking the 2022 2-meter resolution integrated satellite remote sensing image product as the research object, this paper first introduces the highlights of the product itself, that is, timeliness, availability and reliability. then the product quality is studied from six aspects: spatial reference system, position accuracy, logical consistency, time accuracy, image quality and attachment quality. On this basis, according to the characteristics of different geographical regions, seasonal time series, topography and geomorphology, 100 representative verification samples were selected from the overall satellite remote sensing image products in 2022 for experiments, the distribution law of product quality characteristics was analyzed, and the main quality problems were summarized.