498 
  
  
  
  
499 
3. CONCLUSION 
The authors have developed the software suitable for a supercomputer. 
SEASAT SAR image (90km in azimuth x 100km in range) was processed in 20.18 
minutes. In the case that many scenes are processed continuously, the 
throughput time per scene is 8.55 minutes. The requirement for the Japanese 
ERS-1 project has been achieved by this system (FACOM M-380 and FACOM VP-200) .