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.\;
出处
《系统工程与电子技术》
EI
CSCD
2000年第8期72-74,81,共4页
Systems Engineering and Electronics
关键词
目标探测
红外成像
图像处理
数字信号处理
Target detection\ \ Infrared imaging\ \ Image processing\ \ Digital signal processing
