was the
16 bands
wave to
inner is
landuse
VIS/NIR
ared to
id as the
to the
imaging
r the
analysis
2. 087,
f above
et al,
Western
objects
e water,
spectral
(A. F. H.
nportant
region (
?0V are
in the
Physics
tem (Fig.
rational
ized in
Spectral coverage:
No. spectral bands:
Spectral Sampling
interval:
FOV
IFOV
Scan rate
Optical aperture
No. pizals per
scan line:
Encoding:
Date rate:
Detectors
NEi P к NEAT:
0. 4 4 - -12. 5 Pm
VIS/NIR 32
SWIR 32
TIR 7
Total 71
VIS/NIR 20nm
SWIR 30nm
TIR 400-800nm
90°
VIS/NIR 3mrad
SWIR 4. 5mrad
TIR 3mrad
10 C/L
180 mm
512
12 bits/pixal
5. 12 Mbites/S
VIS/NIR Si linear array of 32 elements
SWIR 40 elements of PbS linear array
TIR 7 elements of MCT
as shown in following figure
11ГЙ® Xr NEAT i MEET,
(|im) <W ■ cm' 1 • K" * IO”) (K) (K)
1 8 . 2 - S .6 2.2861
2 8 . 6 - 9.0 2.2456
3 9 . 0 — 9.4 2.1837
4 9 . 4 - 9.8 2.1074
5 9 . 8 - 10.6 3.9449
6 10 . 6 - 11.4 3.5603
7 11 . 4 - 12.2 3.1630
0.45
0.46
0.47
0.49
0.37
0.41
0.46
0.32
0.33
0.34
0.35
0.26
0.29
0.33
Fig. 3-2 The signal to noise ratio of VIS/NIR, SWIR and TIR
region of MAIS. Where a-VIS/NIR b-SWIR
NEATi-in case of scan rate of 30L/S
NEAT 2 -in case of scan rate of 15L/S
Due to the special adventages of microware remote sensing techniques the great attention has
been paid to the development of microwave sensors both passive and active sensors. For passive
microwave remote sensing the microwave radiometers with various frequences were developed.
Four radiometers with wavelength of 8mm, 3, 10 and 21 cm or at К, X, S and L bands have been
in the operational use. Also a microwave radiometer with scanning parabolic antenna working in
3 cm wavelength has been developed for aquisition of the passive microwave image from aircraft.
During the last five years, a synthetic aperture radar as an active microwave sensor has been
developed by by the Institute of Electronics of The Chinese Academy of Sciences! Bai Youtian,
1992). The main operational parameters of CASSAR are shown in following:
213
