SAR image synthesis algorithm improvement on multi-processor/multi-core computers: Vectoring on massively parallel processors.

SAR image synthesis, though highly systematic hence clearly highly parallelisable, requires local variations in the processing in case of airborne acquisitions to compensate for effective trajectory fluctuations around the planned fight path. Here are presented an alternative to paralleling of concurrent independent threads described earlier: the vectorisation on massively parallel processors. The changes in data organisation and computation division imposed by the hardware specificities are described, and performance comparison with multi-threading on multi-CPU is assessed.