The Spectral Responses - Vegetation System

The following tables represent spectral response values for each of the spectral bands.
Full camera measurements after integration are available for B0 (Blue), B2(Red), B3(Near Infrared) and B4(SWIR) : they were obtained in October 1996 during the vacuum tests of the entire instrument and are the last ones before the flight of the instrument. No other measurement of spectral response is planned...

Compared to the previous ones, they are slightly better, especially for the blue band which shows higher response for lower wavelength.

All spectral responses are presented on the following figure :

The following tables give the relative contribution to the energy measurement of the spectral bands for each wavelength (sum of all contributions for each spectral band equals 1.00) assuming constant spectral illumination.. (A text file is also available)

B0 (Blue)
Wavelength	Relative response	Wavelength	Relative response
415	0,000	460	0,122
420	0,001	465	0,119
425	0,005	470	0,112
430	0,020	475	0,099
435	0,043	480	0,066
440	0,066	485	0,028
445	0,086	490	0,009
450	0,103	495	0,003
455	0,117	500	0,001

B2 (Red)
Wavelength	Relative response	Wavelength	Relative response
580	0,000	690	0,097
590	0,000	700	0,060
600	0,001	710	0,032
610	0,020	720	0,016
620	0,076	730	0,007
630	0,102	740	0,003
640	0,107	750	0,001
650	0,112	760	0,001
660	0,119	770	0,000
670	0,125	780	0,000
680	0,121

B3 (NIR)
Wavelength	Relative response	Wavelength	Relative response
730	0,000	850	0,082
740	0,001	860	0,080
750	0,004	870	0,077
760	0,014	880	0,070
770	0,033	890	0,053
780	0,054	900	0,028
790	0,070	910	0,012
800	0,079	920	0,005
810	0,083	930	0,002
820	0,083	940	0,001
830	0,083	950	0,001
840	0,083	960	0,000

B4 (SWIR)
Wavelength	Relative response	Wavelength	Relative response
1520	0,000	1670	0,095
1530	0,001	1680	0,085
1540	0,001	1690	0,061
1550	0,002	1700	0,035
1560	0,003	1710	0,020
1570	0,006	1720	0,013
1580	0,012	1730	0,008
1590	0,024	1740	0,005
1600	0,043	1750	0,003
1610	0,070	1760	0,002
1620	0,092	1770	0,001
1630	0,103	1780	0,001
1640	0,106	1790	0,001
1650	0,105	1800	0,001
1660	0,103