International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 Internat:
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An imager to detect and correct the cloud and aerosol effect 1s GOSATSpectial Coverage i
also borne together with the FTS. With the spectra, image data, 250
and the retrieval algorithm to remove cloud and aerosol E Fang nin Ban? qo
: i S t £n "yero
contamination, the column density of the gases can be q 200 | Au Mam 1 m menn os
leulated. = O2 0 CO2—— —-CH« — i 807
calculate = 0.758 0.763 0.766 0.773 1.57 1.62 1.67 S
Figure 7 shows the breadboard model of the FTS, which has 2 150 See Sead 8 06
an =
been tested and its performance demonstration from air planes E 00 20 = £ 05
is planned. The measured data on the ground, shown as a 8 Lm > [606 né i £04
sample in Figure 8, certainly detected the CO; and CH, spectra SO 203 2.08 4.0 45 50 à 03
with 0.2 cm'' spectral resolution. à Band 5 d, oo 02
0 eee MET em = 0.1
3 6 9 12 15 00 i-
Table |. The specification of the Greenhouse gases Sensor. wavelength qum 520€
Ground ! ointing Configuration cases se ames {fully redundant) Figure 4. The spectral coverage of the GOSAT FTS.
Mechanism and Scanning Cross Track (+35 deg Figure
Fore optics Along Track (+20deg) 18
Field of view [FOV 8 km. 88km (Interval) f$
790 km (scan width) (latitude of 30 à. =
deg) A
Fourier Speed 0.7 1 (Interferogram)/sec / i X
l'ransform Spectral I 2 3 4 5 / I X
Spectromete band f i X NS
r Coverage | 12900- | 5200- | 4800- | 2000- | 660- y | GOSAT
(enl) 13200 | 6400 5200 2500 | 2000 y ! \ will be
/ À . :
resolution | 0.5 0.2 0.2 0.1 0.1 7 | X Figure €
(em-1) | shows tl
Detector Si InGaAs | InGaAs InSb PC- ea
MCT { |
Calibratio Solar Irradiance, Deep Space, | Blackbody, : e j |
n Moon Deep space ix | Star
Figure 5. Observation image. Tracke
mm [am A,
€ gps y iid d
GPS receiver Ÿ ,
e Star Tracker Greenl
Ground Pointing cases €
Mechanism
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a n Size
ia Satellite Direction Mass
Figure 2. Instrument configuration. Cross rack {along wack) Power
Life Spa
P Orbit
("re T Telemeti
Identification
| Camera and
vi Launch
LS
Ground Pointing Mechanism
La x Scene flux fom +2
Figure 3. The FTS optical layout
GOSAT
(PRR) ii
bp d an arpa e The brea
Figure 7. GOSAT FTS bread board model. looking
greenhoi
resolutio
226
