一种机载SAR实时成像信号处理系统的设计

Design of a Real-Time Signal Processing System for Airborne SAR Imaging

提出了一种基于VME总线的机载SAR实时成像信号处理系统的设计方案。方案充分考虑了SAR实时成像所需的数据处理能力和传输带宽 ,在硬件设计上采用了由多片DSP组成的紧耦合分布式并行处理结构 ,有效地解决了大量数据传输带来的数据瓶颈问题。同时结合具体的成像算法 ,给出了详细的软件设计流程。

This paper presents the design scheme of a real-time signal processing system for airborne SAR imaging, which is based on VME bus. Considering fully the data processing capability and data transfer bandwidth necessary for real-time SAR imaging, a tight-coupled and distributed parallel processing structure composed of multi-DSP is adopted in the hardware design, which efficiently solves the data bottle-neck problem arising from large data transfer. Combined with a specific imaging algorithms, detailed software design flow is also given.