gli presentation kit (ver. 3.0) -...
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GLI Presentation Kit (GLI Presentation Kit (VerVer. 3.0). 3.0)
GLI Algorithm Integration TeamNational Space Development Agency of JapanEarth Observation Research Center
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About GLI Science MissionAbout GLI Science Mission
* The GLI is an opticalsensor designed toobserve the atmosphere,ocean, land, andcryosphre.
* NASDA has beendeveloping this since1993 as a generalpurpose medium spatialresolution visible-infrared imager to coveratmosphere and landobservation as well asocean colorobservations.* The GLI was first
suggested by the EarthEnvironment ObservationCommittee (EEOC) ofJAPAN in 1990.
* The GLI will be launchedby NASDA H-2A rocketfrom the TanegashimaSpace Center.
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ADEOS-II SatelliteADEOS-II Satellite
Advanced Microwave Scanning Radiometer (AMSR),Global Imager (GLI), SeaWinds, Polarization andDirectionality of the Earth‘s Reflectances (POLDER),and Improved Limb Atmospheric Spectrometer II(ILAS-II). Solar array paddle (PDL). Communicationsand Data Handling Subsystem (C&DH), Inter OrbitalCommunication Subsystem (IOCS), Mission DataProcessing Subsystem (MDP), Direct Transmissionfor Local users (DTL) and DTL-Antenna (DTL-ANT),Direct Transmission Subsystem (DT), Cube CornerReflector (CCR), Data Collecting System (DCS) andAntenna (DCS-ANT), and Earth Sensor Assembly(ESA).
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IOCS
AMSR
GLI
DTL-ANT
CCR
ILAS-II
SeaWindsESAC&DHDT
MDP
PDL
DCS-ANTDOF
XY
Z
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GLI System ComponentsGLI System Components
X (Roll)
Scanningmirror
Telescope (Primary optics)
Y (Pitch)
Z (Yaw)
Sun shade
Relay optics
DOF
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GLI Block DiagramGLI Block DiagramSolar ray
DF**
* Folding Mirror** Dichroic Filter
Pre-Amp.
Wire harness between units
FM*
VNIR 2
SWIR 2
MTIR
VNIR 1
SWIR 1
Multistagepeltierelements
ELU: Electrical Unit
DetectorBB/Lamp controller
BB/lampFull aperturediffuser
Scan mirror
Activecooler
Controller
Heatsink
Powersupply
Scan and tiltmechanics
Controller
Heater
Calibrationpowersupply
Upwellingradiation
Calibration signalgenerator
Digitalsignalprocessor
Telemetry and command processing unit
Telescope
Bandpass filter
Analoguesignalprocessor
SRU: Scanning Radiometer Unit
SRUthermalcontrol
Detector driverELUthermalcontrol
Rel
ay o
ptic
s
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GLI Channel SpecificationGLI Channel Specification
NASDA/GLI/GAIT
Cross tracking scanAltitude : 803 kmInclination : 98.6 deg.Swath width : 1600 kmResolution : 1 km : 250 mTilt angle : 20 deg.Period : 101 min.Recurrent Period : 4 daysLocal time : 10:30AMData rate : 4.1Mbps
(subpoint)
APPLICATION CODEO : OCEANL : LANDA : ATMOSPHEREC : CRYOSPHERE
VNIR(1km resolution)
ch1 380(10) O A Cch2 400(10) Och3 412(10) Och4p 443(10) O L A Cch5p 460(10) O L A Cch6 490(10) Och7p 520(10) O A Cch8p 545(10) O A Cch9 565(10) O Lch10 625(10) Och11 666(10) Och12 680(10) Och13 678(10) L A Cch14 710(10) Och15 710(10) L A Cch16 749(10) Och17 763(8) L Ach18 865(20) Och19 865(10) L A C(p:piecewise linear)
(250m resolution)
ch20 460(70) L A Cch21 545(50) L A Cch22 660(60) L A Cch23 825(110) L A C unit [nm]
SWIR(1km resolution)
ch24 1050(20) L A Cch25 1135(70) Ach26 1240(20) L A Cch27 1380(40) A
(250m resolution)
ch28 1640(200) L A Cch29 2210(220) L A C unit [nm]
MTIR(1km resolution)
ch30 3.715(0.33) O A Cch31 6.700(0.5) Ach32 7.300(0.5) Ach33 7.500(0.5) Ach34 8.600(0.5) O L A Cch35 10.80(1.0) O L A Cch36 12.00(1.0) O L A C unit [µm]
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GLI Channel LocationGLI Channel Location
Land-Atmos.Ocean color250m resolution
NASDA / GLI 36 Spectral Channels
0
0.2
0.4
0.6
0.8
1
0.3 µm 1 µm 10 µm14 µm
WAVE LENGTH
Water Ice1E-10
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1E+0
Total
H2O
CO2+
Ozone
Refractive in
dex (m
i)TR
AN
SM
ITT
AN
CE
(U.S
.Sta
nd
ard
Atm
os.
Mo
del
)
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Satellite Satellite OrbitOrbit
Sun-Synchronous ORBIT
NN+1
Sun
6,400km
800km
Winter
Summer
Spring
Autumn
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Land Observation (simulation)Land Observation (simulation)
l Segment Analysis (Production by Planning Expected measured radiance map corresponding to the GLI channel23 (825nm) using Sun-Earth location on August 1st. The world vegetation map created by Dr. Honda of ChibaUniversity and hemispherical and monthly averaged reflectivity data for each vegetation type are used to obtainground surface reflectivities. The sea surface albedo was set to 0.04 over the ocean. The US standardatmospheric model is used to the molecular scattering and absorptionsion)
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Daytime Data CoverageDaytime Data Coverage
Third Day
Second DayFirst Day
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Response Function Response Function (ch1-15)(ch1-15)
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Response Function Response Function ((chch16-27)16-27)
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Response Function Response Function ((chch28-36)28-36)