meteorological research institute may. 2004 1 communication, ocean and meteorological...
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Meteorological Research Institute May. 2004 1
Communication, Ocean and Meteorological Satellite(COMS) Program
in Korea
COMS Program Office(METRI),
Korea Meteorological Administration &
Korea Aerospace Research Institute
GOES-R User Conf. (10-14 May, 2004)
Meteorological Research Institute May, 2004 2
National Space Program in Korea
1999 KITSAT 3
2003Scientific Satellite 1
20012005Scientific Satellite 2
2008 Scientific Satellite 3
2006
2011
2005 KOREASAT 5
1999 KOREASAT 3
2013Scientific Satellite 52015
ScientificSatellite 6
2004 KOMPSAT 2
2008Communication, Ocean & Meteorological Satellite-1
2008 KOMPSAT 3
2009 KOMPSAT4
2010KOMPSAT5
2011 Scientific Satellite4
2012KOMPSAT 6
2014KOMPSAT 7
2015KOMPSAT 8
2015 KOREASAT 6
1999 KOMPSAT 1
2014Communication, Ocean& Meteorological Satellite 2
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Mission Objectives of COMS
▣ Satellite Communication Mission◈ In-orbit verification of the performance of advanced communication technologies.◈ Experiment of wide-band multi-media communication service.
▣ 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
▣ Weather Monitoring Mission◈ Continuous monitoring of imagery and extracting of meteorological products with
high-resolution and multi-spectral imager.◈ Early detection of special weathers such as storm, flood, yellow sand, etc.◈ Extraction of data on long-term change of sea surface temperature and cloud.
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COMS Development Organization
- System Development- BUS Development- Meteorological & Ocean Sensor Development- Ground Station Development- Satellite Control- Orbit&Frequency Acquisition
Leading Organization
Korean Government
(MOST, MIC, MOMAF, KMA)
KARI
ETRI
- Communication Payload Development- Satellite Control System Development- Ground Station Co-Development
Korea Space Industries
- BUS Part Design/Manufacturing- Payload Part Design/ Manufacturing
METRI/KORDI
- User Requirements of Metorology & Ocean Sensor- Sensing Data Application Development
- Co-Development of System- Co-Development of BUS
Co-Developer
Overseas Manufacturer
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COMS - itinerary
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COMS Satellite Description
▣ Total Fund of COMS-1 : appr. 240 Million dollars
▣ Mounting Payload Specfication
Communication System ( Wt : 90 kg Needed Power : 1,500 W)
Marine Obs. Sensor ( Wt : 60 kg N/P : 80 W)
Meteorological Obs. Sensor (Wt : 150 kg N/P : 270 W)
▣ The Oncoming Schedule
2004 : Completion of System Design
2005 : Completion of preliminary Design
2006 : Completion of detailed Design
2007 : System Assembly and Test
2008 : Launch and Operation of Satellite
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COMS - figure
Oceanographic payload
Meteorological Payload
Ka-band antennafor
telecommunication
Solar panel
Inertial balance
Antenna for Met/ocean
data
platform type
expected at (0 N, 116
E)
Meteorological Imager (5 channels) - Vis 0.55~0.80 micrometer - IR 3.5~4.0, 6.5~7.0, 10.3~11.3, 11.5~12.5 micrometer
Observation mode - Full Disk (planetary) : once / 3 hours - Regional (synoptic) : 4 times/1 hour - Local (mesoscale) : 8 times / 1 hour
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COMS System Requirement
Operation Orbit Geosynchronous
Mass 2.5 ~ 3.0 tons(TBD)
Power 3 kW(TBD)
Operation Life More than 7 years
Attitude Control 3-axis stabilized
Sensing Data Transmission and Satellite Control
Freq.
Uplink : S-band
Downlink : L-band
Communication Service Freq.
Ka-band
Payload
Meteorological Imager + Sounder(?)
Ocean Sensor
Ka-band Transponder
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User Requirements (1/4)- Communication Mission -
▣ Requirement of Ka-band Payload(TBC) ▣ Ka-band Service Coverage
Frequency(Ka-band)
Uplink : 29.6 ~ 30.0GHzDownlink : 19.6 ~ 20.3GHz
Minimum EIRP edge of
coverage58dBW
G/T 13dB/K
Bandwidth 400MHz(100MHz/channel)
Beamwidth 0.6degree/each beam
Coverage Refer to right figure
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User Requirements (2/4)- Oceanic Mission -
▣ Requirement of Ocean Sensor(TBD) ▣ Ocean Sensor Coverage
Item Requirements
Spatial Resolution 500m X 500m
Coverage 2,500km X 2,500km
No. of Band 8 fixed bands
Band Center &Band Width &
Nominal Rad.&Max Rad. &
NEdL &SNR (Sensitivity
of sensor)
Band Center[nm]
Band Width[nm]
Nom. Rad[Wm-2 um-
1sr-1]
Max. Rad.[Wm-2
um1sr-1]NEdL SNR
412 20 100 150.0 0.100 1,000
443 20 92.5 145.8 0.085 1,090
490 20 72.2 115.5 0.067 1,170
555 20 55.3 85.2 0.056 1,070
625 20 32.0 58.3 0.032 1,010
670 20 27.1 46.2 0.031 870
765 40 17.7 33.0 0.020 860
865 40 12.0 23.4 0.016 750
MTF 0.3 at Nyquist frequency
Dynamic Range 11bit
Sensor Calibration
- Calibration type : Solar Calibration - Accuracy of Radiometric Calibration : 3%
Number of observation
- Total : 8 times∙ 10:00 ~ 17:00 : 6 times,∙ 22:00, 02:00 : 2 times
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User Requirements (3/4)- Meteorological Mission (1/2) -
▣ Requirement of Imager(TBC)
Number of Channels 5ch (Vis-1ch, IR-1ch, WV-1ch, IRWin-2ch)
Digitization 10bits
Full Disc Scan Time 25min.
ChannelSpectral
band(㎛ )
IFOV(km) Application
VIS1 0.67 1
Daytime cloud imagery, RGB color composite, Detection of special event (yellow dust, fire, haze, etc.),Atmospheric motion vectorAerosol optical depth, RGB color composite, NDVI
IR 3.8 4 Nighttime fog/stratus, Fire detection, Surface temperature
WV1 6.7 4 Upper atmospheric water vapor, Upper atmospheric motion vector
IR WIN3 11.0 4 Standard IR split window channel(cloud, Sea surface temperature, Yellow dust, ash..)
IR WIN4 12.0 4 Standard IR split window channel(cloud, Sea surface temperature, Yellow dust, ash..)
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User Requirements (4/4)- Meteorological Mission (2/2) -
▣ Operation Mode of Imager
▣ Regional Observation Area Watched on the 116E Equator
Observation Mode
Observation Area
Observation Cycle
Operation Type Remark
Global Full Disk 30min. Normal
Regional EAPNH* 15min. Normal
Local Local Area 7-8min. Special As required
* EAPNH : East Asia and Pacific in Northern Hemisphere
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COMS System Architecture
Command,Telemetry
Raw Data,HRIT/LRIT
HRIT/LRIT
Satellite Operation Control Center/ Back-up Data Processing Center
Meteo/Ocean DataApplication Center(Primary Data Processing Center)
HRIT/LRITForeignMeteorological DataReceiving Station
CommunicationSystem MonitoringFacility
Specialized Organization/ Domestic User
Foreign Meteorological Organization/ Foreign User
Exclusive Line
Meteorological Information Supply
Various SiteInternet
Internet
Ka-band RF Signals
Raw Data
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COMS Frequency and Orbit(Draft)
▣ COMS Orbital Position : 116E (Target Orbit)
▣ COMS Frequency Band◈ For Ocean and Meteorological Service
(will be filed to ITU)
1,670 ~ 1,710 MHz
2,025 ~ 2,110 MHz
2,200 ~ 2,290 MHz
◈ For Communication Service
(already secured)
27.0 ~ 31.0 GHz
18.1 ~ 21.2 GHz
Meteorological Research Institute May, 2004 15
Case Analyses
- July 31,1998 Shoonchun 187mm/day
Mt. Jiri’s Heavy rainfall
- July 15, 2001 Seoul 273.4mm/day
Seoul/Kyungki Prov.
Heavy Rainfall
- Aug. 31, 2002 Kangnung 870.5mm/day
TY Rusa’s Heavy Rainfall
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The Distributions of Daily Rainfall
Mt. Jiri Heavy Rainfall
Seoul/Kuingki Prov
TY Rusa Heavy Rainfall
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Hourly Rainfall Intensity(Mt. Jiri’s Heavy rainfall)
0
20
40
60
80
100
120
140
1 2 3 4 5 6 7 8 9 101112131415161718192021222324
[hr]시각
[mm
]강
우량
순천 해남 무안 장흥 남원
Meteorological Research Institute May, 2004 18
Distribution of Hourly Rainfall(Mt. Jiri Heavy Rainfall)
13LST 14LST 15LST 16LST 17LST 18LST
19LST 20LST 21LST 22LST 23LST 24LST
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Hourly Rainfall Intensity(Seoul/Kyungki Prov) * 일강수 5 순위 : 서울 , 춘양 (*), 춘천 , 홍천 , 양평 , 인천
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1819 20 21 22 23 24
[hr]시각
[mm
]강
우량
서울 춘천 홍천 양평 인천
Meteorological Research Institute May, 2004 20
Distribution of Hourly Rainfall(Seoul/Kyungki Prov. Heavy Rainfall)
01LST 02LST 03LST 04LST 05LST 06LST
07LST 08LST 09LST 10LST 11LST 12LST
Meteorological Research Institute May, 2004 21
Hourly Rainfall Intensity(TY Rusa Heavy Rainfall) * 일강수 5 순위 : 강릉 , 대관령 , 동해 , 속초 , 추풍령
0
20
40
60
80
100
120
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
[ hr ]시각
[ m
m ]
강우
량
강릉 대관령 동해 속초 추풍령
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Distribution of Hourly Rainfall(TY Rusa Heavy Rainfall)
02LST 04LST 06LST 08LST 10LST 12LST
14LST 16LST 18LST 20LST 22LST 24LST
No observed data
due to record-broken rain
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Summary
▣ Meteorological Effects:
- Early detecting and continuous monitoring the high impact weathers
- Improvement of NWP model using satellite data
- Early detection of aerosol, such as Asian dust, and monitoring of its transport, etc.
- Long term extraction of climate variation information
Oceanographical Effects:
- Reducing the property damages of fishermen
- preventing the ocean resources from damaging
▣ Communicational Effect:
- In-orbit test of developed communication payload
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COMS – Sincere Prayer