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KOMPSAT-I P/L KARI KOMPSAT KOMPSAT- I and OSMI H. Y. Paik Korea Aerospace Research Institute 1998. 7. 25.

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Presentation on theme: "KOMPSAT-I P/L KARI KOMPSAT KOMPSAT- I and OSMI H. Y. Paik Korea Aerospace Research Institute 1998. 7. 25."— Presentation transcript:

1 KOMPSAT-I P/L KARI KOMPSAT KOMPSAT- I and OSMI H. Y. Paik Korea Aerospace Research Institute

2 KOMPSAT-I P/L KARI KOMPSAT 2 OCARE-98/NTU 1. KOMPSAT OVERVIEW 2. Electro-Optical Camera(EOC) OVERVIEW 3. Payload Data Transmission Subsystem(PDTS) 4. Ocean Scanning Multispectral Imager(OSMI) 5. KOMPSAT II PLAN 6. SUMMARY CONTENTS

3 KOMPSAT-I P/L KARI KOMPSAT 3 OCARE-98/NTU KOMPSAT OVERVIEW Mission : Earth Remote Sensing(EOC, OSMI) and Space Experiment(SPS) Mission Orbit - Circular, Sun-synchronous - 685km altitude, deg. Inclination - 10:50AM Equatorial Crossing(Ascending) min orbit period - 2 day (45 deg. Roll) / 3 day (30 deg. Roll) revisit Launch date : August, 1999 ( 3 year life time) Spacecraft Mass : About 500 kg(including 73 kg propellant) Joint Development with TRW

4 KOMPSAT-I P/L KARI KOMPSAT 4 OCARE-98/NTU KOMPSAT OVERVIEW(OPERATION) Electro-Optical Camera(EOC) Pushbroom Scanned Off-pointed for Cartography  15km swath 6.6m GSD(nadir) 2 minute contiguous duty cycle Payload Data Transmission Subsystem(PDTS) X-band system for image data Solid State Recorder(2.5Gbit) 10% duty cycle Payloads Ocean Scanning Multi-spectral Imager(OSMI) Cross Track Scanned 800km swath,  1km GSD 20% duty cycle Science Physics Sensor(SPS) Ionosphere Measurement Sensor High Energy Particle Detector 100% duty cycle Mission and Control Center RF Communications (S-Band) Satellite Operations Mission Planning Spacecraft Simulator/Training Ground Station Image Processing Center RF Communications (X-Band) Image Processing Product Generation Data Storage and Distribution External Interface Users Additional Image Acquisition or LEOP stations

5 KOMPSAT-I P/L KARI KOMPSAT 5 OCARE-98/NTU KOMPSAT OVERVIEW(OPERATION)

6 KOMPSAT-I P/L KARI KOMPSAT 6 OCARE-98/NTU KOMPSAT OVERVIEW(GROUND STATION)

7 KOMPSAT-I P/L KARI KOMPSAT 7 OCARE-98/NTU Solar Array Electro Optical Camera Ocean Scanning Multi-spectral Imager L/V Adapter BUS Space Physics Sensor KOMPSAT OVERVIEW(SPACECRAFT)

8 KOMPSAT-I P/L KARI KOMPSAT 8 OCARE-98/NTU KOMPSAT OVERVIEW(PAYLOAD) KOMPSAT-I Payload Configuration Weight Power EOC 35Kg 52W LRC 18Kg 30W SPS 7.6Kg 16W PDTS 14.5Kg 63W Total 100Kg 159W EOC LRC SPS PDTS

9 KOMPSAT-I P/L KARI KOMPSAT 9 OCARE-98/NTU Korea Cartography Mission - Provide images for cartography which will allow the production of a map of Korea to a 1:25000 scale standard Ocean Color Monitoring Mission - Image oceans to support biological oceanography - 6 spectral bands, large scale multispectral images Scientific Payloads Accommodation Mission - Accommodate customer-furnished scientific payloads Ionosphere Measurement Sensor (IMS) - Globalized measurement of ionized layer in KOMPSAT orbit High Energy Particle Detector (HEPD) - Globalized measurement of high energy particles in KOMPSAT orbit TOP LEVEL MISSION OVERVIEW

10 KOMPSAT-I P/L KARI KOMPSAT 10 OCARE-98/NTU EOC OVERVIEW The KOMPSAT EOC mission objective is to provide images for the production of scale maps including digital elevation models. The EOC Design Specification –Panchromatic spectral band: nm –Ground Sample Distance(GSD); 6.6m in nadir view –Swath width: >15Km in nadir view –MTF: >10% at Nyquist frequency –SNR: >50 –Data Rate: <25Mbps

11 KOMPSAT-I P/L KARI KOMPSAT 11 OCARE-98/NTU EOC OPERATION CONCEPT Cartography Data Collection Operational Control Mode Control 2 minute(contiguous) duty cycle per orbit Programmable gain control Spacecraft roll control for swath pre-position Real time data downlink via X-band in view of KGS Capability to store EOC data in PDTS SSR within storage capacity and duty cycle constraints On-board Calibration: dark & solar calibration

12 KOMPSAT-I P/L KARI KOMPSAT 12 OCARE-98/NTU PDTS OVERVIEW The KOMPSAT PDTS mission objective is to provide X-band downlink to transmit EOC/OSMI image data and On-Board-Computer(OBC) data to Korea Ground Station(KGS). PDTS Design and Function –Formatter/Multiplexer Unit(FMU) to format and encode image data and telemetry data in CCSDS grade 2 (Input Data Rate; EOC: 25Mbps, OSMI: 1Mbps, OBC: 1.5Mbps) to store image data in Solid State Recorder(SSR) with the storage capacity of for later playback downlink –Transmitter QPSK modulation –RF Assembly –X-band Omni Antenna Data Transmmision Rate : 45Mbps Data Reception Contact Area Radius from KGS : 1500Km Link margin > 3dB with BER of Duty Cycle per Orbit : 10%

13 KOMPSAT-I P/L KARI KOMPSAT 13 OCARE-98/NTU OSMI MISSION The KOMPSAT OSMI Mission objective is to provide ocean color measurements for biological oceanography. The OSMI primary spectral bands selected to meet the mission goal are: Band #Bandwidth Sensing Objective B1: (443 nm)20 nmConcentration of chlorophyll B2: (490 nm)20 nmConcentration of pigment B3: (510 nm)20 nmTurbidity of chlorophyll B4: (555 nm)20 nmTurbidity B5: (670 nm)20 nmCalibration of atmospheric effect B6: (865 nm)40 nmCalibration of atmospheric effect

14 KOMPSAT-I P/L KARI KOMPSAT 14 OCARE-98/NTU OSMI OPERATION CONCEPT Ocean Color Monitoring Data Collection Operational Control Mode Control (20% duty cycle) Selectable bands(6 bands within nm) Programmable gain control Collection during vertical viewing at specified performance Real time data downlink via X-band in view of ground station Stored data via PDTS SSR out of view within storage and duty cycle constraints

15 KOMPSAT-I P/L KARI KOMPSAT 15 OCARE-98/NTU OSMI OPERATION CONCEPT OSMI Operation Modes Standby Imaging Solar Calibration Dark Calibration Safe/Hold Reset once per orbit, at the earth north pole before and after imaging mode 20% duty per orbit, image data collection SOH data downlink commands uplink

16 KOMPSAT-I P/L KARI KOMPSAT 16 OCARE-98/NTU OSMI PERFORMANCE

17 KOMPSAT-I P/L KARI KOMPSAT 17 OCARE-98/NTU OSMI DESIGN OSMI Optical Layout SCAN MIRROR FIRST FOLD MIRROR CELL FORE-OPTICS CELL SLIT CELL COLLIMATING CELL GRATING CELL RE-IMAGING CELL SECOND FOLD MIRROR CELL DARK CALIBRATION CAVITY SOLAR CALIBRATION CAVITY SCAN FIELD OF REGARD RANGE LIMIT VIEW FROM +X ( COVERS REMOVED) APERTURE CELL (WITH CORRECTOR LENS) WINDOW CELL

18 KOMPSAT-I P/L KARI KOMPSAT 18 OCARE-98/NTU OSMI PHOTON COLLECTION

19 KOMPSAT-I P/L KARI KOMPSAT 19 OCARE-98/NTU OSMI DESIGN OSMI Electronics Block Diagram Focal Plane Module o CCD o Electronics Video Electronics (VE) Data Buffer o Data Compression Processor Scan Drive Electronics Spacecraft Video Clock Power FPA Data Gain Offset Data Timing 1553B 28VDC Motor Drive Position Temp. Sensors Htr Power Spectral Data Command, SOH Telemetry PDTS OBC Power Converters On/Off Relay ON/OFF Command ON/OFF Status Time Mark, Safe Hold LSA o Temp. Sensor o Heater Scan Driver Assembly o Motor o Pos. Sensor Survival Heater & Thermostat LSA LEA

20 KOMPSAT-I P/L KARI KOMPSAT 20 OCARE-98/NTU BAND SELECTION CHARACTERISTICS Storage Register Spatial Spectral 96km 1km 900nm 400nm 768 Temperature Sensor Fanout Substrate CCD Active Image Area Super Pixel 1km 2.6nm 192 Minimum Selectable Band = 2.6 nm X 2 = 5.2 nm Maximum Selectable Band = 2.6 X 64 =140 nm CCD Package Top view.. 96

21 KOMPSAT-I P/L KARI KOMPSAT 21 OCARE-98/NTU OSMI BAND SELECTION CAPABILITY OSMI has on-orbit spectral band selectibility via Ground Command after launch. –Any 6 spectral bands can be selected in the spectral range from 400 nm to 900 nm which is divided into 192 spectral pixels. –There are always 6 bands without overlap among the bands –Band Center: 6 positions with 2.6nm accuracy –Band Width: minimum 5.2 nm, maximum nm –Command is valid in the standby mode only. The above on-orbit band selectibilty provides - great flexibility in Ocean Color Monitoring - research opportunities to support the next generation sensor design

22 KOMPSAT-I P/L KARI KOMPSAT 22 OCARE-98/NTU OSMI MISSION PARAMETER

23 KOMPSAT-I P/L KARI KOMPSAT 23 OCARE-98/NTU OSMI MEASURED PERFORMANCE The instrument performance is measured on-ground for 8 basic spectral bands within 400 nm ∼ 900 nm including the primary bands. (1)Spectral Band Characteristics

24 KOMPSAT-I P/L KARI KOMPSAT 24 OCARE-98/NTU (2) OSMI radiometric characteristics OSMI MEASURED PERFORMANCE(Con’t)

25 KOMPSAT-I P/L KARI KOMPSAT 25 OCARE-98/NTU (3) MTF The satellite-level MTF is predicted as shown in the Figure 3.3 based on the measured values of instrument level MTF, space environment (temperature change and vacuum) effect analysis and satellite motion (jitter & smear) effect analysis. OSMI MEASURED PERFORMANCE(Con’t)

26 KOMPSAT-I P/L KARI KOMPSAT 26 OCARE-98/NTU KOMPSAT - II PLAN Scheduled to be launched in period KARI will be responsible for the development. Heritage : KOMPSAT - I Estimated weight & power: 800kg / 800watt Main Payload : Multi-Spectral Camera (Pan: 1m GSD, 4 band multi-color: 4m GSD) Secondary Payload : under- study

27 KOMPSAT-I P/L KARI KOMPSAT 27 OCARE-98/NTU SUMMARY KOMPSAT- I is scheduled to be launched in August 1999 (KOMPSAT II IN Period) OSMI will perform worldwide ocean color monitoring. OSMI major specification –Orbit : 685Km altitude, 10:50AM ascending, Sun Synchronous –GSD : 1Km, Swath Width: 800Km –Spectral Band: 6 bands –Duty Cycle: 20% –On-board Image Data Storage: 2.5Gbits at the end of life time OSMI has On-orbit spectral band selection capability. –Selection of 6 bands from 400 nm to 900 nm –Great flexibility for ocean color monitoring and its applications

28 KOMPSAT-I P/L KARI KOMPSAT 28 OCARE-98/NTU KOREA AEROSPACE RESEARCH INSTITUTE KOREA MULTI-PURPOSE SATELLITE

29 KOMPSAT-I P/L KARI KOMPSAT 29 OCARE-98/NTU Electro Optical Camera Ocean Scanning Multi-spectral Imager S-band Antenna Solar Array Space Physics Sensor L/V Adapter S/C BUS KOREA MULTI-PURPOSE SATELLITE

30 KOMPSAT-I P/L KARI KOMPSAT 30 OCARE-98/NTU KOMPSAT APPLICATIONS

31 KOMPSAT-I P/L KARI KOMPSAT 31 OCARE-98/NTU KOMPSAT APPLICATIONS

32 KOMPSAT-I P/L KARI KOMPSAT 32 OCARE-98/NTU Payload Module Equipment Module Propulsion Module Proto-Flight Model in Final Assembly KOMPSAT FM UNDER INTEGRATION

33 KOMPSAT-I P/L KARI KOMPSAT 33 OCARE-98/NTU Satellite Assembly, Integration & Test Center

34 KOMPSAT-I P/L KARI KOMPSAT 34 OCARE-98/NTU Orbit Environment Test - Thermal-vacuum Chamber - Thermal-shock Chamber - Bake-out Chamber KOMPSAT AI&T FACILITIES

35 KOMPSAT-I P/L KARI KOMPSAT 35 OCARE-98/NTU Integration & Assembly - Angular accuracy : 1/360 - Position Accuracy : 50 KOMPSAT AI&T FACILITIES

36 KOMPSAT-I P/L KARI KOMPSAT 36 OCARE-98/NTU Launch Environment Test - Vibration Test System - Mass Property System KOMPSAT AI&T FACILITIES (continued)

37 KOMPSAT-I P/L KARI KOMPSAT 37 OCARE-98/NTU EMI/EMC Test - Anechoic Chamber - 13(L)x12(W)x7(H)m KOMPSAT AI&T FACILITIES (continued)

38 KOMPSAT-I P/L KARI KOMPSAT 38 OCARE-98/NTU Optical Instrument Assembly and Test Lab. - Large Aperture / High Precision Optics - Surface Quality Measurement - Alignment - Performance Test (Parts / E-O System) - Vibration Control / Clean Room Facility Electronics Assembly and Test Lab. - General P/L Electronics Test-bed - Focal Plane Assembly Test & Analysis Sensor Characteristics FPE and Analog Signal Processor - Payload Data Transmitter Test & Analysis Payload Assembly and Test Lab. Flight Software Test Lab. - Flight Software Design and Test for the On-board Computer and Payload Instruments - Development of Software Test-bed

39 KOMPSAT-I P/L KARI KOMPSAT 39 OCARE-98/NTU Mission Control & Data Receiving / Processing Station KOMPSAT GROUND STATION


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