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12/1
     OSTA-1 (SIR-A)
      
     Synthetic aperture radar (SAR)
     3600' of film (data recording) ~ 8 hours of data
     sensitive to altitude delta of +/- 2 km
    (because of pulse timing + return





avg power ~ 750 watts (used for ops)


- Test of SIR-A in PLB (on pad ?) for EMI potential on shuttle... fire any EMI ( 1 V/m)

MT, Bob Blount ... get wt's equivalent of Nesbitt for OSTA (see Koons)

12/2

  MET Update  (SIR-A)
possibilities:   1) nominal 
                 2) MET update (ground tracks ~ same, PRF etc, still O.K.)
                 3) altitude delta so  severe that all parameters need changing
MET updates: at least 1, to as many as 1 per orbit

updates req. every 24/m hrs, where m is nautical miles difference from nominal orbit