Cas 500-1/2 image utilization technology and system development: Achievement and contribution

Sung Joo Yoon, Jonghwan Son, Hyeongjun Park, Junghoon Seo, Yoojin Lee, Seunghwan Ban, Jae Seung Choi, Byung Guk Kim, Hyun jik Lee, Kyu Sung Lee, Ki Eok Kweon, Kye Dong Lee, Hyung Sup Jung, Yun Jae Choung, Hyun Choi, Daesung Koo, Myungjin Choi, Yunsoo Shin, Jaewan Choi, Yang Dam EoJong Chul Jeong, Youkyung Han, Jaehong Oh, Sooahm Rhee, Eunmi Chang, Taejung Kim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


As the era of space technology utilization is approaching, the launch of CAS (Compact Advanced Satellite) 500-1/2 satellites is scheduled during 2021 for acquisition of high-resolution images. Accordingly, the increase of image usability and processing efficiency has been emphasized as key design concepts of the CAS 500-1/2 ground station. In this regard, “CAS 500-1/2 Image Acquisition and Utilization Technology Development” project has been carried out to develop core technologies and processing systems for CAS 500-1/2 data collecting, processing, managing and distributing. In this paper, we introduce the results of the above project. We developed an operation system to generate precision images automatically with GCP (Ground Control Point) chip DB (Database) and DEM (Digital Elevation Model) DB over the entire Korean peninsula. We also developed the system to produce ortho-rectified images indexed to 1:5,000 map grids, and hence set a foundation for ARD (Analysis Ready Data) system. In addition, we linked various application software to the operation system and systematically produce mosaic images, DSM (Digital Surface Model)/DTM (Digital Terrain Model), spatial feature thematic map, and change detection thematic map. The major contribution of the developed system and technologies includes that precision images are to be automatically generated using GCP chip DB for the first time in Korea and the various utilization product technologies incorporated into the operation system of a satellite ground station. The developed operation system has been installed on Korea Land Observation Satellite Information Center of the NGII (National Geographic Information Institute). We expect the system to contribute greatly to the center's work and provide a standard for future ground station systems of earth observation satellites.

Original languageEnglish
Pages (from-to)867-879
Number of pages13
JournalKorean Journal of Remote Sensing
Issue number5
StatePublished - 2020


  • ARD
  • CAS 500-1/2
  • Precision image processing system
  • Utilization system


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