hello,friends,
i need to do rayleigh correct for L8 OLI,its parameters following:
ROLL_ANGLE = -0.001
SUN_AZIMUTH = 161.83335842
SUN_ELEVATION = 35.29565303
what is the roll_angle? the sun_azimuth and sun_elevation is the sun_azimuth and sun_elevation
of image center point? do i need to calculate sun_azimuth and sun_elevation of every pixel?
how do i acquire those parameters by using IDL language? i am not able to use IDL acquire specify parameter in TXT fie?
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