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Current Status of KOMPSAT Program

Dosoon Hwang

Korea Aerospace Research Institute

November 23, 2006

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Contents

• Introduction to KARIKOMPSAT - 1 & 2• Operational Satellites in KARI

– KOMPSAT-1– KOMPSAT-2

• National Space Development Plan

• Developing Satellites in KARI– KOMPSAT-3– KOMPSAT-5

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An Introduction to KARI

• KARI (Korea Aerospace Research Institute)– Established in 1989, the Korea Aerospace Research Institute (KARI)

has been devoted to fulfilling its role as the leading national aerospace R&D institute in Korea.

– R&D activities at KARI can be categorized into three areas: • the development of cutting edge technology aircraft, • the development of satellites, and • the development of space launch vehicles.

– KARI also performs quality certification of aircraft and space products for the government.

– Number of Employees: 700– KARI is located in the Daeduk Science Town (in Daejeon) which is

140km south of Seoul. – Web site: http://www.kari.re.kr

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KARI view in Google Earth

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KOMPSAT-1 (Korea Multi-Purpose Satellite-1)• Development Outline

– Period : Nov. 1994 ~ Jan. 2000– Joint development by KARI & TRW– Launch : Dec. 22, 1999

• Mission– Cartography of Korean peninsula– Ocean Observation– High energy particles & Ionosphere

measurement• Orbit : 685km Sun-synchronous, 10:45

LTAN• Mission life-time: 3 years• Configuration

– BUS Diameter 1.35 m X Height 2.5 m– Weight, Power : 470 kg, 646W– Resolution/ Swath : 6.6 m/ 17km

KOMPSAT - 1

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Satellite Ground Station in KARI

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Seoul (EOC Image Mosaic)2000.2.15 (L)+2000.1.20 (R)

KOMPSAT – 1 Image

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KOMPSAT - 1

EOC Image

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Korean peninsula Observation of Yellow Sand

KOMPSAT - 1

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• Development Outline– Period : Dec. ‘99 ~ Dec. ‘06– Indigenous Development by KARI

with the Technical Support from Astrium– Launch : July 28, 2006

• Payload : MSC(Multi-Spectral Camera)– Resolution : 1m panchromatic,

4m color (4 channels)– Swath: 15 km– Joint development by KARI & ELOP

• Mission– Cartography of Korean peninsula

• Orbit : 685km Sun-synchronous, 10:50 LTAN• Mission life-time: 3 years• Configuration

– BUS Diameter 1.85m, Height 2.6m– Weight, Power: 800kg, 1000W

KOMPSAT-2 (Korea Multi-Purpose Satellite-2)

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KOMPSAT-2 Satellite ConfigurationMSC

Star Tracker

S-Band AntennaX-Band Antenna

RWA

RDU

Propellant Tank Solar Array

PMU

OBC

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KOMPSAT-2 Components Koreanization

Battery RadiatorMLI

Propulsion Assy Dual ThrusterRDU VDE

FSSA CSSA

S-bandTransponder

OBC

Payload Module Equipment Module

AdapterPropulsion Module

PCU ECU

DDC SAR

Doowon (Thermal)

Hanwha (Propulsion)

Daewoo (Control)

KAI (Telemetry)Korean Air (Structure)

KAI (Power)

MLI : Multi-Layer Insulator PCU : Power Control Unit ECU : EPS Control Unit DDC : Deployment Device Controller SAR : Solar Array Regulator VDE : Valve Drive ElectronicsRDU : Remote Drive Unit FSSA : Fine Sun Sensor Ass’y KAI : Korea Aerospace Industries

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KOMPSAT-2: Space Segment

• Orbit– Sun-Synchronous Orbit– 685 km mean altitude

• Satellite Main Characteristics– Mass: 800 kg, Power: 1 kW, Size: Height: 2.80 m, Diameter: 2.00m– Steerable Solar Array– Storage Capacity: 96 Gbit at BOL– 320 Mbps X-band down-link capability– 24 hours on-board operational autonomy– Three axis stabilized– Pointing Accuracy: 0.05 deg per axis– High GPSR and star tracker accuracy– Processor: 3x 80386 CPU, + Math Coprocessor– 3 years lifetime

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Environmental Tests

Launch Environmental Test Orbit Environmental Test

EMC Test Acoustic Test Separation Shock Test

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Rockot Launch from Plesetsk Cosmodrome, Russia

28 July 2006

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KOMPSAT-2 Image

• Cape Town Port

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KOMPSAT-2 Image

• 3-D image

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KOMPSAT-2 Image

• Land Reclamation Project

Breakwater

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National Space Development Plan (2005. 5)

2009(start)CBMS

1999KITSAT-3

2003STSAT-1

2006KOMPSAT-2

2008COMS

2009KOMPSAT-3

1999KOMPSAT-1

2006(start)KOMPSAT-3A

2010(start)KOMPSAT-6

2008KOMPSAT-5

2010(start)KOMPSAT-7

2007STSAT-2

2010STSAT-3

2007 KSLV-1

2015KSLV-2

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III. Developing Satellites in KARI

• KOMPSAT-3

• KOMPSAT-5

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• Development Outline– Period : Jul. 2004 ~ Nov. 2009– Indigenous Development by KARI

• Payload : AEISS(Advanced Earth Imaging System)– Development by KARI with the Technical

Support from EADS Astrium

• Mission– Cartography of Korean peninsula

• Orbit : 685km Sun-synchronous

• Mission life-time: 4 years

• Configuration– Size: Diameter 1,981mm, Height 3,346mm – Weight, Power : 900kg, 1200W

KOMPSAT-3

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KOMPSAT-3: Space Segment

• Orbit– Sun-Synchronous Orbit– 685 km mean altitude

• Satellite Main Characteristics– Mass: 900 kg, Size: Height: 3.4 m, Diameter: 2.0m– Fixed Solar Array– Storage Capacity: 384 Gbit at EOL– 600 Mbps X-band down-link capability– 24 hours on-board operational autonomy– Three axis stabilized– High Agility– High GPSR and star tracker accuracy– Processor: ERC32– 4 years lifetime

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Image Comparison

KOMPSAT-1(6.6m Res.) KOMPSAT-2(1m Res.) KOMPSAT-3

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• Development Outline– Period : June 2005 ~ June 2009– Indigenous Development by KARI

• Payload : SAR(Synthetic Aperture Radar)– Imaging modes: Stripmap Mode, Scan,

Spotlight– Co-Development by KARI & Alenia

• Mission– Cartography of Korean peninsula

• Orbit : 550km Sun-synchronous Dawn-Dusk orbit

• Mission life-time: 5 years

• Configuration– Size: Diameter 2,370mm, Height 4,000mm – Weight, Power 1,280kg, 1400W

KOMPSAT-5

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KOMPSAT-5: Space Segment

• Orbit– Sun-Synchronous Dawn-Dusk Frozen Orbit– 550 km mean altitude and 97.6 deg inclination

• Satellite Main Characteristics– Mass: 1280 kg, Size: Height: 4.00 m, Diameter: 2.57m– Steerable Solar Array– Storage Capacity: 256 Gbit at EOL– 300 Mbps X-band down-link capability– 24 hours on-board operational autonomy– Three axis stabilized– Right and Left Looking– High GPSR and star tracker accuracy– 5 years lifetime

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Hanger at Kirtland AFB, Albuquerque, New Mexico(Resolution 1m)

Lake Bridge

X-Band Synthetic Aperture Radar Imagery

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