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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)