1. KMA Proprietary Material 4 th GOES-R Users’ Conference 1 Introduction to Communication, Ocean & Meteorological Satellite 2006. 5. Hee-Hoon Lee Korea Meteorological Administration

2. KMA Proprietary Material 4 th GOES-R Users’ Conference 2 Mission Objectives of COMS Satellite Communication Mission In-orbit verification of developed communication technologies Experiment of wide-band multi-media communication service 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

3. KMA Proprietary Material 4 th GOES-R Users’ Conference 3 COMS System Architecture

4. KMA Proprietary Material 4 th GOES-R Users’ Conference 4 Flight Configuration of COMS Satellite Earth Direction Ram Direction Ka Band Antenna Meteorological Imager (MI) Geostationary Ocean Color Imager (GOCI) S-Band Antenna

5. KMA Proprietary Material 4 th GOES-R Users’ Conference 5 Launch Vehicle Compatibility Ariane 5 Sea Launch Delta 4 Proton Atlas V

6. KMA Proprietary Material 4 th GOES-R Users’ Conference 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. KMA Proprietary Material 4 th GOES-R Users’ Conference 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. KMA Proprietary Material 4 th GOES-R Users’ Conference 8 MI Requirement Number of Channels5ch (Vis-1ch, IR-4ch) Digitization10bits Full Disc Scan Time< 27min. Channel Spectral band( ㎛ ) IFOV (km) Application VIS (Visible) 0.6751 Daytime cloud imagery Detection of special event (yellow dust, fire, haze, etc.), Atmospheric motion vector SWIR3.754Nighttime fog/stratus, Fire detection, Surface temperature WV (Water Vapor) 6.754Upper atmospheric water vapor, Upper atmospheric motion WIN1 (Window) 10.84 Standard IR split window channel (Cloud, Sea surface temperature, Yellow sand detection) WIN2 (Window) 12.04 Standard IR split window channel (Cloud, Sea surface temperature, Yellow sand detection)

9. KMA Proprietary Material 4 th GOES-R Users’ Conference 9 GOCI Requirements ItemRequirements Spatial Resolution 500m X 500m (+/- 10%) Coverage2,500km X 2,500km No. of Band8 Visible bands Band Center Band Width Nominal Radiance Max Radiance NEdL SNR Band Center [nm] Band Width [nm] Nom. Rad [Wm -2 um -1 sr -1 ] Max. Rad. [Wm -2 um 1 sr -1 ] NEdLSNR 41220100150.00.1001,000 4432092.5145.80.0851,090 4902072.2115.50.0671,170 5552055.385.20.0561,070 6602032.058.30.0321,010 6801027.146.20.031870 7452017.733.00.020860 8654012.023.40.016750 MTF  0.3 at Nyquist frequency Dynamic Range  11bit Sensor Calibration - Calibration type : Solar Calibration - Accuracy of Radiometric Calibration :  3% Number of observation ∙ 10:00 ~ 17:00 : 8 times, ∙ 22:00, 02:00 : 2 times

10. KMA Proprietary Material 4 th GOES-R Users’ Conference 10 GOCI Scene Observation and Coverage  The nominal instrument Field of View (FOV) centered at Korean Seas: 36 o N and 130 o E  The coverage area depends on the satellite orbit: red line for 116 E and yellow line for 127 E

11. KMA Proprietary Material 4 th GOES-R Users’ Conference 11 COMS Ground Station Locations KMSC SOCCTES KOSC ~110km ~4km ~135km ~110m MSC SOCCTES KOSC ~110km ~4km ~135km

12. KMA Proprietary Material 4 th GOES-R Users’ Conference 12 Operation of MI ModeGlobalRegionalLocal Duty Cycle30 min. 10 min. Time per Cycle ≤27 min. Per the scan speed of the global observation mode 1 min. Observation Mode Local Area Full Disk Regional Area ENH APNH LSH

13. KMA Proprietary Material 4 th GOES-R Users’ Conference 13 Processed Data Distribution Coverage

14. KMA Proprietary Material 4 th GOES-R Users’ Conference 14 Baseline Products GroupProductSpatial Resolution Temporal Resolution Accuracy (Thres.) Cloud DetectionCLD1x1 pixel=obs CSR~ 100km=obs AMV ~ 50km3 hr.9 m/s Surface Information SST1x1 pixelhourly1.2 K LST1x1 pixelhourly2 K Sea Ice/SC1x1 pixeldaily Insolation1x1 pixelhourly10 % Water vapor Information UTH~ 50km=obs20 % TPW~ 50km=obs20 % Cloud Information CLA3x3 pixel=obs CTT/CTH1x1 pixel or 3x3 pixel =obs3 K 1 km Fog1x1 pixel=obs PI1x1 pixel=obs20 % bias OLR~ 10kmhourly10 % Aerosol Information AI1x1 pixel=obs AOD10x10 pixel=obs35 %

15. KMA Proprietary Material 4 th GOES-R Users’ Conference 15 Sea Ice/Snow detection OLR TPWUTH Cloud Amount Cloud Phase AMV SST Insola- tion LST AOD Aerosol Detection PI Cloud Type COD CTT&CTH Fog CloudyClear COMS Level 1B Image data Auxiliary Data Cloud Detection CSR 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. KMA Proprietary Material 4 th GOES-R Users’ Conference 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. KMA Proprietary Material 4 th GOES-R Users’ Conference 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