4 
SYNTHESIS OF 
REQUIREMENTS 
The issues surrounding the questions of what spectral 
bands and other sensor characteristics would best serve the 
users’ needs and whether the desired characteristics could 
be implemented within acceptable cost and risk constraints 
were discussed at length in all of the panel sessions at the in- 
itial workshop meeting. Considerable discussion also focused 
on defining the required revisit interval and data-processing, 
downlink, data-format, and dissemination requirements. The 
plenary sessions served to expose the positions of the panel 
members and to focus attention on the salient characteristics 
desired. Much of the second workshop meeting was devot- 
ed to working out viable compromises among the positions 
represented. This section presents the views expressed and 
the agreements reached. 
Sensor Requirements 
The point of departure for developing sensor require- 
ments for the SeaWiFS was the sensor parameters and per- 
formance of the CZCS, summarized in Section 1. The char- 
acteristics relevant to formulation of requirements for the 
SeaWiFs are repeated below: 
Spectral Bands 
[cen [eonen | CM [aaa 
Chlorophyll 
Reference 
Gelbstoffe, sediments 
Chlorophyll 
Surface vegetation 
Surface temperature 
Scan Plane Tilt: +20° along track 
Digitization: 8 bits 
33 
