[GRASS-user] i.atcorr returns all NULL values for AVNIR-2 band 2, 3

[Do Thi Hang]

Dear all,

I am trying to use i.atcorr in GRASS GIS 7 with AVNIR-2 data in Japan, it
works well for band 1,4 but returns all NULL values for band 2,3. Maybe the
problem is because of Sensor band parameter (the last one in 6S parameters,
the values are 81, 82. 83, 84 respectively band 1, 2, 3, 4): For all 4
bands, I change the parameter from 81 to 84, it returns all NULL values
when the parameter is 82 or 83; real/integer values when the parameter is
81 or 84. Below is list of 6S parameters for band 2:

11                                         # geometrical conditions = avnir
2 15 3.00 135.657 34.282    # month day hh.ddd long lat
1                                           # atmospheric mode = tropical
1                                           # aerosols model = continental
11                                         # visibility (km)
-0.300                                   # mean target elevation above sea
level = 300 m
-1000                                    # sensor height = on board
82                                         # 2th band of avnir

Could anybody help me to solve this problem? Thank you very much.

Yours sincerely,
Hang


---  --- --- ---
Do Thi Hang (MSc candidate)
GIS Laboratory
Graduate school for Creative Cities
Osaka City University
Tel. +81-90-8385-6238
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