Multi-subarray SAS subaperture imaging method in heterogeneous environment

The invention discloses a multi-subarray SAS subaperture imaging method in a heterogeneous environment. The multi-subarray SAS subaperture imaging method in a heterogeneous environment includes the steps: segmenting the whole synthetic aperture process, selecting a time domain time-delay summation method, and performing real time imaging through a processing platform by coordinating with CPU+GPU.Besides, the data of each subaperture can be processed in parallel, so that the structure is suitable for implementation for a parallel processor, and in the subsequent development in the future, thestructure can be effectively embedded into the SAS system imaging method based on FPGA+DSP, thus greatly improving the operation efficiency. 本发明公开了种异构环境下多子阵SAS子孔径成像方法，首先将整个合成孔径过程分段，其次成像方法选用时域延时求和方法，并结合CPU+GPU异构协同处理平台实时成像。各子孔径的数据可以并行处理，这种结构很适合并行处理机实现，在日后的后续发展中也可以有效地嵌入到基于FPGA+DSP的SAS系统成像方法中，大大提高了运算效率。