XVth ISPRS Congress: XVth ISPRS Congress

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FIG. 4 COPARISON Œ FFT ALGORITHM 
The corner turning is an I//0-bottleneck procedure which prevents 
shortening the throughput time of SAR data processing. Since general purpose 
computers and minicomputers have small main memory, intermediate data are stored 
temporally in disks. On the other hand, FACOM VP-200 has large main memory up 
to 256MB. In order to utilize this feature, this software uses 644B main memory 
to lay 2-dimensional data (2048 samples in range x 4096 samples in azimuth ) 
and the [,/0 time of the corner turning disappears.