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Technologies and System for Automatic Generation of Advanced Geo-spatial Products with Chinese Satellite Imagery

机译：中国卫星影像自动生成高级地理空间产品的技术和系统

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As an advanced technology, satellite remote sensing has been applied in a variety of fields and has brought numerous social benefits. This paper introduces a new operational satellite imagery processing system and conducts a case study using it by processing ZY-02C and ZY-3 satellite imagery. By way of this case study, this paper proposes a workflow involving the key generation technologies with fully automatic generation of advanced remote sensing products, such as the digital elevation model (DEM), the digital orthophoto map (DOM), and the high-resolution color-fused image. The proposed workflow in this system tackles the key practical issues related to the domestic satellite imagery process, such as low processing efficiency, low utilization, poor integration, etc. This system utilizes the following key generation technologies: automatic registration between the satellite imagery and the existing multi-geographic data, strip aerial triangulation of three-line array satellite images, multi-sensor image registration and fusion, dense matching of photogrammetric point clouds, and automatic correct splicing of wide range images. The proposed process system consists of two parts. The first part is the creation of a geographic information production mode with no manual intervention. This mode aims to improve the accuracy and efficiency of mass domestic satellite images to produce highly precise orientation by using global public basic geographic information databases like Map World, Google Earth, etc. The second part is the design of a workflow to ensure the stability of the production time and quality of domestic satellite imagery's advance product generation. Finally, this paper also discusses the accuracy of the process of image orientation and the precision of advanced products such as high-resolution color-fused image (ZY-02C), DEM (ZY-3), and DOM (ZY-3). The results show that the products of the proposed process system meet the requirements in both efficiency and quality, and the proposed process system is ready for future real-time domestic remote satellite imagery generation.
机译：卫星遥感作为一种先进技术已应用于各个领域，并带来了众多的社会效益。本文介绍了一种新的可操作卫星图像处理系统，并通过处理ZY-02C和ZY-3卫星图像进行了案例研究。通过此案例研究，本文提出了一种工作流程，其中涉及关键生成技术，并具有先进的遥感产品的全自动生成功能，例如数字高程模型（DEM），数字正射影像图（DOM）和高分辨率颜色融合的图像。该系统中拟议的工作流程解决了与国内卫星图像处理有关的关键实际问题，例如处理效率低，利用率低，集成性差等。该系统利用以下关键生成技术：卫星图像和卫星图像之间的自动配准。现有的多地理数据，三线阵列卫星图像的带状空中三角测量，多传感器图像配准和融合，摄影测量点云的密集匹配以及自动校正大范围图像的拼接。拟议的过程系统由两部分组成。第一部分是在没有人工干预的情况下创建地理信息生产模式。该模式旨在通过使用全球公共基本地理信息数据库（例如Map World，Google Earth等）来提高大量国内卫星图像的精度和效率，以产生高精度的定位。第二部分是工作流程的设计，以确保卫星图像的稳定性。国内卫星影像先进产品的生产时间和质量。最后，本文还讨论了图像定向过程的精度以及诸如高分辨率彩色融合图像（ZY-02C），DEM（ZY-3）和DOM（ZY-3）之类的高级产品的精度。结果表明，所提出的过程系统的产品在效率和质量上都满足要求，并且所提出的过程系统已为将来的实时国内远程卫星图像生成做好了准备。

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