46 
Table 5. Users' Baseline Goals for the SeaWiFS System. 
Band 3 Minimum 
Bandwidth SNR/NEAT 
Spectral Bands 
1 433 - 453 nm 510 
2 490 - 510 nm 500 
3 599 - S/o'nm 350 
4 655 - 675 nm, 285 
‘ 745 - 785 nm 280 
6 843 - 887 nm 280 
i 10.5 - 11.5 wm 0.29K (at 300K) 
8 Ml ou= 1225 q0im 0.29K (at 300K) 
Spatial Resolution 1.13 km 
Radiometric Accuracy: 5%, each band 
Relative Precision < 1% 
Between-Band Precision < 1% 
Polarization Sensitivity < 2% (worst case) 
Dynamic Range 10 bits quantization (gain adjustable on board) 
Bright Target Recovery 10 samples or less 
Locational Accuracy 1 km absolute, high-resolution data; 5 km absolute, low-resolution data 
Scan Plane Tilt + 20° 
Revisit Interval 1 day 
Repeat Coverage 16 days 
VNIR Absolute Radiometric 
Calibration 
Within 2% of maximum radiance from source (traceable to NBS 
standards) when receiving radiation from zero to the maximum level. 
TIR Absolute Radiometric 
Calibration 
Within 1% of maximum radiance from each of two blackbody sources 
when receiving radiation from zero to the maximum level, a space 
view serving as a zero-radiance reference. 
Data Access Direct reception of local area coverage in near real time and direct 
access to global data base within 24 hours of collection. 
Data Product Delivery Seven days, Level-1 imagery, 10 days, Level-2 high- and 
low-resolution imagery. 
10:30 a.m. (between 10:30 a.m. and 1:30 p.m., acceptable). 
Crossing Time 
Mission Life Three years or more. 
1 Blocked from 760 - 770 nm 
