基于FPGA的sinc插值算法的研究和实现

Research and Realization of Sinc Interpolation Algorithm Based on FPGA

在合成孔径雷达(Synthetic Aperture Radar,SAR)距离向数据预处理模块中,sinc插值是经常用到的一种插值算法。具体阐述了sinc插值的优点及原理、用现场可编程门阵列(FPGA)实现sinc插值算法的详细设计流程,并给出了系统调试方案以及实验结果。实验表明当输入数据频率变化时,所设计模块均能够可靠稳定的工作。该设计方案已成功应用到某合成孔径雷达距离向数据预处理模块中。

The sinc-interpolation algorithm is used frequently in the preprocessing module of the range data of the Synthetic Aperture Radar.The advantage and principle of sinc-interpolation and the flow chart of the realization of sinc-interpolation based on FPGA are expounded in details.Then,an entire debugging scheme of the system and the experimental results are introduced.The results demonstrate that when the frequency of the input data changes,the module in this design can always work accurately and stably.The approach has been applied in the range data preprocessing unit of a certain Synthetic Aperture Radar System successfully.