An algorithm to automatically extract coordinate and time information from optical observation data of geostationary orbit satellites (GEO satellites) or geosynchronous orbit satellites (GOS satellites) is developed. The optical wide-field patrol system is capable of automatic observation using a pre-arranged schedule. Therefore, if this type of automatic analysis algorithm is available, daily unmanned monitoring of GEO satellites can be possible. For data acquisition for development, the COMS1 satellite was observed with 1-s exposure time and 1-m interval. The images were grouped and processed in terms of “action”, and each action was composed of six or nine successive images. First, a reference image with the best quality in one action was selected. Next, the rest of the images in the action were geometrically transformed to fit in the horizontal coordinate system (expressed in azimuthal angle and elevation) of the reference image. Then, these images were median-combined to retain only the possible non-moving GEO candidates. By reverting the coordinate transformation of the positions of these GEO satellite candidates, the final coordinates could be calculated.

1. INTRODUCTION
 2. TEST OBSERVATION
  2.1 Site, Telescope and Detector
  2.2 Test Observation
 3. DATA REDUCTION
  3.1 WCS Solution Calculation
  3.2 Selecting the Reference Image
  3.3 Generating “Object” Images Using SExtractor
  3.4 Transforming Images to Match the Reference Image
  3.5 Combining Transformed Images
  3.6 Detecting GEOs on the Combined Image
  3.7 Detecting Points Nearest to the GEOs in the OriginalImages
 4. RESULTS AND DISCUSSION
 5. SUMMARY
 ACKNOWLEDGEMENTS
 REFERENCES

• Sun-youp Park(Space Situational Awareness Center, Korea Astronomy and Space Science Institute) Corresponding Author
• Jin Choi1(Space Situational Awareness Center, Korea Astronomy and Space Science Institute,Korea University of Science and Technology)
• Jung Hyun Jo(Space Situational Awareness Center, Korea Astronomy and Space Science Institute,Korea University of Science and Technology)
• Ju Young Son(Space Situational Awareness Center, Korea Astronomy and Space Science Institute.Korea University of Science and Technology)
• Yung-Sik Park(Space Situational Awareness Center, Korea Astronomy and Space Science Institute)
• Hong-Suh Yim(Space Situational Awareness Center, Korea Astronomy and Space Science Institute)
• Hong-Suh Yim(Space Situational Awareness Center, Korea Astronomy and Space Science Institute)
• Hong-Kyu Moon(Space Situational Awareness Center, Korea Astronomy and Space Science Institute)
• Young-Ho Bae(Space Situational Awareness Center, Korea Astronomy and Space Science Institute,Korea University of Science and Technology)
• Jang-Hyun Park(Space Situational Awareness Center, Korea Astronomy and Space Science Institute)