红外玫瑰扫描DSP实时亚成像的优化实现  

DSP Real-Time Optimal Quasi-Imaging of Infrared Rosette Scan

作　　者：罗智勇[1] 李晓峰[1] 李在铭[1] 

机构地区：[1]电子科技大学通信工程学院,成都610054

出　　处：《系统工程与电子技术》2000年第8期72-74,81,共4页Systems Engineering and Electronics

摘　　要：红外玫瑰线扫描的高像素精度转换是亚图像大概率识别跟踪的基础。从易于DSP实时实现的角度 ,提出了一种快速收敛的数字锁相优化迭代技术 ,实施高精度的亚成像。对不同成像算法的性能比较表明 ,锁相优化迭代具有相位积累误差小 ,像素转换精度高 ,运算量小 ,便于实时转换等优点。对扫描同步频率扰动进行优化分配 ,能改善整机性能 ,最大限度地实施锁相。应用DSP中断服务实时处理策略 ,在C5 0系统中实现了锁相优化迭代实时转换。Higher pixel-precise transform of infrared rosette scan is the base of infrared quasi-image recognition. In view of DSP real-time operation, an optimized digital phase locking technique is proposed in the paper to implement high precise synchronous azimuth transform. The performance compare reveals that the optimized PLL technique has low phase accumulation error, higher transform precision, lower calculation complexity, and more feasibility to process. Phase-locking performance of the scanner improves by optimal distribution to synchronous transform frequency interference. Optimized phase locking algorithm is real-timely realized in C50 system with DSP interruption strategy.\;

关 键 词：目标探测 红外成像 图像处理 数字信号处理 

分 类 号：TN911.73[电子电信—通信与信息系统]