Introduction to Communication, Ocean & Meteorological Satellite

1. Introduction to Communication, Ocean & Meteorological Satellite 2006. 5. Hee-Hoon Lee Korea Meteorological Administration

2. Mission Objectives of COMS Weather Monitoring Mission • Continuous monitoring of imagery and extracting of meteorological products with high-resolution and multi-spectral imager • Early detection of special weather such as storm, flood, yellow sand • Monitoring of long-term change of sea surface temperature and cloud Ocean Monitoring Mission • Monitoring of marine environments around the Korean peninsula • Production of fishery information (Chlorophyll, etc.) • Monitoring of long-term/short-term change of marine ecosystem Satellite Communication Mission • In-orbit verification of developed communication technologies • Experiment of wide-band multi-media communication service

3. COMS System Architecture

4. Flight Configuration of COMS Satellite Geostationary Ocean Color Imager (GOCI) S-Band Antenna Meteorological Imager (MI) Earth Direction Ram Direction Ka Band Antenna

5. Ariane 5 Sea Launch Delta 4 Proton Atlas V Launch Vehicle Compatibility

6. Some System Requirements (1) Satellite Lifetime • Operational Life > 7 years from the end of IOT period • Design Life > 10 years Spacecraft Stabilization • 3-axis Stabilized Spacecraft for monitoring any regions at any time Reliability • > 0.75 for Meteorological and Ocean Monitoring Mission at End of Life • > 0.85 for Communication Payload based on 12 years Design Life Launch Vehicle Compatibility • Compatible with Ariane, Delta, Atlas, Proton, Sea-Launch, etc. • Compatible with the Launch vehicle Mission Profiles and Sequences

7. System Requirements (2) Orbital Location • Geosynchronous Orbit at 116.2E or 128.2E • Location will be finalized after the approval from ITU Stationkeeping Accuracy • ± 0.05 ° in longitude and latitude of the nominal orbit location Transfer Orbit Operation • Arrive at the Target Orbit within 30days after Separation from Launch Veh. • 6 month IOT to verify the Performance of the Spacecraft and Payloads

8. MI Requirement

9. GOCI Requirements

10. GOCI Scene Observation and Coverage The nominal instrument Field of View (FOV) centered at Korean Seas: 36oN and 130oE  The coverage area depends on the satellite orbit: red line for 116 E and yellow line for 127 E

11. SOC CTES KOSC MSC ~135km ~4km ~110km COMS Ground Station Locations East Sea Yellow Sea SOC CTES KOSC KMSC ~135km ~4km ~110km ~110m

12. Operation of MI Observation Mode Regional Area Local Area Full Disk APNH ENH LSH

13. Processed Data Distribution Coverage

14. Baseline Products

15. COMS Level 1B Image data Auxiliary Data OLR Cloud Detection Cloudy Clear Sea Ice/Snow detection Aerosol Detection Cloud Phase COD SST LST AOD AMV Cloud Amount Insola- tion TPW UTH Cloud Type CSR PI CTT&CTH Fog Baseline Products AMV: Atmospheric motion vector AOD: Aerosol optical depth COD: Cloud optical depth CTT: Cloud top temp. CTH: Cloud top height TPW: Total precipitable water PI: Precipitation index UTH: Upper Tropospheric Humidity CSR: Clear Sky Radiances

16. COMS Frequency Registration ITU Registration Orbit : 116.2E / 128.2E ITU Registration Frequency Band • For Ocean and Meteorological Service and Satellite Operation :1,670 ~ 1,710 MHz(L-Band): Sensor Data & Processed Data Downlink : 2,025 ~ 2,110 MHz(S-Band): Processed Data & Command Uplink : 2,200 ~ 2,290 MHz(S-Band): Telemetry Downlink • For Communication Service : 27.5 ~ 30.8 GHz: Ka-Band Uplink : 18.3 ~ 20.7 GHz: Ka-Band Downlink

17. Major Milestones for COMS Development • Prime Contractor EDC(EADS Astrium): 27 April 2005 • Kickoff Meeting at Astrium: 18-19 May 2005 • System Requirement Review: 13-14 June 2005 • System Design Review: 8-9 August 2005 • Preliminary Design Review : 9-13 January 2006 • Future Milestones • Critical Design Review: March 2007 • Launch: End of 2008