Hubungan Rrs, Rho dan L

Posted on: 4 Jun, 2015, by :
Solar_Spectrum
Solar_Spectrum

Remote Sensing Reflectance (Rrs) = normalized water leaving reflectance (nRhow) / PI

Normalized water leaving radiance (nLw) = Rrs* F0

Normalized water leaving reflectance (nRhow) = (PI*nLw)/Fo

Normalized water leaving radiance (nLw) = water leaving radiance (Lw)/ cos (za)

za = solar zenith angle

Fo= extraterestrial solar irradiance

 

Daftar Fo untuk beberapa sensor (sumber: SeaDAS ):

MODIS:

#
# Wavelengths (um)
#
Lambda(1) = 412
Lambda(2) = 443
Lambda(3) = 469
Lambda(4) = 488
Lambda(5) = 531
Lambda(6) = 547
#Lambda(6) = 551
Lambda(7) = 555
Lambda(8) = 645
Lambda(9) = 667
Lambda(10) = 678
Lambda(11) = 748
Lambda(12) = 859
Lambda(13) = 869
Lambda(14) = 1240
Lambda(15) = 1640
Lambda(16) = 2130


#
# Extraterrestrial Solar Irradiance (mW/cm^2/um/sr)
#
F0(1) = 172.912
F0(2) = 187.622
F0(3) = 205.878
F0(4) = 194.933
F0(5) = 185.747
F0(6) = 186.539
F0(7) = 183.869
F0(8) = 157.811
F0(9) = 152.255
F0(10) = 148.052
F0(11) = 128.065
F0(12) = 97.174
F0(13) = 95.824
F0(14) = 45.467
F0(15) = 23.977
F0(16) = 9.885

MERIS:
Lambda(1) = 413
Lambda(2) = 443
Lambda(3) = 490
Lambda(4) = 510
Lambda(5) = 560
Lambda(6) = 620
Lambda(7) = 665
Lambda(8) = 681
Lambda(9) = 709
Lambda(10) = 754
Lambda(11) = 762
Lambda(12) = 779
Lambda(13) = 865
Lambda(14) = 885
Lambda(15) = 900

F0(1) = 171.366
F0(2) = 187.751
F0(3) = 192.934
F0(4) = 192.687
F0(5) = 180.049
F0(6) = 164.970
F0(7) = 153.091
F0(8) = 147.022
F0(9) = 140.546
F0(10) = 126.620
F0(11) = 124.979
F0(12) = 117.571
F0(13) = 95.888
F0(14) = 92.975
F0(15) = 89.544

SeaWIFS

# Wavelengths (um)
#
Lambda(1) = 412
Lambda(2) = 443
Lambda(3) = 490
Lambda(4) = 510
Lambda(5) = 555
Lambda(6) = 670
Lambda(7) = 765
Lambda(8) = 865

#
# Extraterrestrial Solar Irradiance (mW/cm^2/um/sr)
#
F0(1) = 172.998
F0(2) = 190.154
F0(3) = 196.438
F0(4) = 188.164
F0(5) = 182.997
F0(6) = 151.139
F0(7) = 122.330
F0(8) = 96.264

VIIRSN
Nbands = 15

Lambda(1) = 410
Lambda(2) = 443
Lambda(3) = 486
Lambda(4) = 551
Lambda(5) = 671
Lambda(6) = 745
Lambda(7) = 862
Lambda(8) = 1238
Lambda(9) = 1601
Lambda(10) = 2257
Lambda(11) = 3700
Lambda(12) = 4050
Lambda(13) = 8550
Lambda(14) = 10763
Lambda(15) = 12013

F0(1) = 171.134
F0(2) = 190.214
F0(3) = 198.774
F0(4) = 184.122
F0(5) = 150.456
F0(6) = 127.643
F0(7) = 96.031
F0(8) = 45.606
F0(9) = 25.084
F0(10) = 7.732
 

 

 

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: