The space shuttle Challenger was quickly maneuvered into a SAR data acquisition mode to capture a SIR-B scene of Hurricane Josephine which presented its:elf a ' s an unscheduled target of opportunity during NASA Mission 4l-G during October of 1984. Steeply sloped seas approaching 10 meters in height were observed several hundred kilometers in advance of the hurricane track. Mission attitude data indicate that thE' shuttle pitch, roll, and yaw were unstable during thE' data take. The statistical clutterlock employed by our ground SAR processor yields a Doppler frequency estimate that t ' racks the shuttle yaw variation but is ambiguous with a single discontinuity equal to one mul.tiple of the radar pulse repetition frequency. The SIR-B signal data have been compressed under several Doppler parameterizations to investigate the ambiguity of the clutterlock. Resultant ocean images are analyzed for their contrast and resolution properties.
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