矢量处理器在SAR实时成像中的应用及性能分析

本文介绍了自行研制的合成孔径雷达(Synthetic Aperture Radar,SAR)实时成像处理机中的矢量处理器,及其在实时成像处理中的应用.该矢量处理器在(I)FFT等信号处理方面具有优越的特性,非常适合完成CS成像算法中的(I)FFT和复乘运算.在实时成像处理时,本文运用两维(I)FFT运算,能够避免转角存储,降低处理时间开销,减少对处理器的控制步骤,从而充分发挥该处理器在处理性能、数据传输率和可编程性等方面的优点.文中还分析了该矢量处理器的处理精度,及其对实时成像处理的影响.并将该矢量处理器成功地应用到SAR实时处理机中,最后给出了实际成像结果.

Performance and Application in SAR of a High Speed Vector Processor

This paper studied and accomplished a Synthetic Aperture Radar(SAR) real time processor with good performance. The high speed vector processor,which is the core element of the real time processor is introduced first.The vector processor could be applied to any other field which has massive data to be processed.The study uses 2DFFT to complement CS algorithm,which can remove corner turn and reduce processing overhead.The paper analyzes the precision and processing time of the vector processor and gives a satisfactory image produced by the processor.