利用单片可编程系统对红外焦平面阵列进行实时非均匀性校正  

Real-time nonuniformity correction of infrared focal plane arrays by system on programmable chip

作　　者：代少升[1] 张新立[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《光学精密工程》2009年第4期854-858,共5页Optics and Precision Engineering

基　　金：国家自然科学基金-中物院NSAF联合基金资助项目(No.10776040);国家自然科学基金资助项目(No.60602057);重庆市科委自然科学基金资助项目(CSTC;No.2006BB2373);重庆市教委自然科学基金资助项目(No.KJ060509;No.KJ080517);重庆邮电大学自然科学基金资助项目(No.A2006-04;No.A2006-86)

摘　　要：针对红外焦平面阵列(IRFPA)非均匀性多点校正过程中涉及的数据量大,难于实现实时校正的特点,提出了利用Altera公司的单片可编程系统(SOPC)对红外焦平面阵列进行多点实时校正的方法。利用SOPC的NiosII处理器定制指令功能,实现了软件算法的硬件化,有效提高了红外焦平面阵列实时非均匀性校正速度。实验结果表明:对相同的多点校正算法,利用SOPC硬件实现算法的校正速度比TMS320C6201 DSP硬件快1.5倍,且校正过程简单灵活,图像效果理想,能够很好地满足红外焦平面阵列实时非均匀性校正要求。A multi-point real-time nonuniformity correction method based on a System on Programmable Chip （SOPC） from Altera Company is proposed, for a large amounts of image data need to be processed in the nonuniformity correction of infrared focal plane arrays （IRFPA） and the data are difficult to correct in real-time. By creating custom instructions for the Nios 11 embedded processor,the soft ware algorithms are implemented by a hardware to improve the nonuniformity correction speed of the IRFPA in real time. The experimental results show that the correction speed of utilizing the SOPC hardware has increased by 150% as compared with that of utilizing the TMS320C6201 DSP hardware for the same multi-point correction. The SOPC correction implementation is characterized by its simple and flexible method and clear images, it can satisfy the requirement of real-time nonuniformity correc- tion of IRFPA.

关 键 词：红外焦平面阵列 单片可编程系统 非均匀性 多点实时校正 

分 类 号：TN216[电子电信—物理电子学]