OCEAN IRRADIANCE MEASUREI'LtiiNTS USING 

 AN INTERi.-'i^ROMr]TER SPEGTROI-iETER 



Before discussing the data, I'd like to briefly 

 familiarize the reader with the mechanism of data reduction 

 for this experiment. The first plot shov;s the actual inter- 

 ferogram used for obtaining this example (Spectrum 20) . The 

 next plot shows an uncorrected reduction "of Spectrum 20. At 

 this point, the wavelength scale is established but the ordinate 

 scale (spectral radiant emittance) is not yet calibrated. 

 (NOTE: The wavelength scale obtained from the interferometer 

 spectrometer d.s really linear in v.'ave number. Therefore, in 

 interpolating between wavelength points presented on each 

 siDectrum this fact should be incorporated) . The next plot 

 shows the actual instrument response function of the I4PM 

 spectrometer used in the measurements. Each uncorrected spectrum 

 is divided by this function to properly display the actual 

 data. Note that the instrum.cnt resijonse function is "bell 

 shaped". Thus, wo v7ould expect the final structure in the 

 corrected spectrum to be somev.'hat modified from the uncorrected 

 data. This fact is best typified in the final, corrected 

 spectrum in this set. The final co.rrected spectrur:; has its 

 shape modified in addition to corrections for f ield-of--view, 

 attenuation ,t number of scans, etc. I should be quick to make 

 two points: 



29-2 



