微型SAR成像量化显示的FPGA实现

Realization of Quantization and Display for Miniature SAR Imaging Based on FPGA

针对微型合成孔径雷达(SAR)实时成像处理机高性能、小体积、低功耗的特点和要求,提出了一种基于FPGA实现微型SAR成像灰度量化、显示驱动的设计方案。采用StratixⅡ EP2S180开发板为设计平台,并自行设计了SDRAM和VGA软核控制器。硬件实现了SAR成像压缩后的16bit数据量化为8bit灰度值,成功驱动VGA接口实时显示SAR灰度图像。

Based on the characteristics and requirements of miniature SAR real - time imaging processor with high performance, small size and low- power, a method to design gray quantization and display driver using FPGA is presented. With the platform of Stratix ⅡEP2S180 DSP development board, SDRAM and VGA soft - core controllers are also designed. The SAR imaging compressed 16hit data is quantified to the 8bit gray - scale value by hardware, and the system successfully drives VGA interface for real - time displaying SAR gray images.