摘要
利用角度调谐的方法标定了多普勒测风激光雷达双边缘探测技术中的初始工作点。理论上在小信号近似条件下推导出失谐频率的计算公式。测风精度为1m/s时模拟计算得到角度调谐精度要求为1×10-5弧度。实验上使用步进角为27"的五相步进电机与1∶200减速器实现了1×10-6弧度的角度调谐精度,测得了标准具透过率曲线。理论和实验表明通过对F-P标准具放置角度的微小调节来校准双边缘探测技术中的初始工作点切实可行。
The initial work location is scaled by angle tuning method in Doppler wind lidar which utilizes double edge technique. The equation of mismatch frequency is deduced theoretically under small-signal approximation. When the accuracy of wind velocity is 1 m/s,the angle tuning step is less than 1 × 10^-5 rad through numerical simulation. In the experiment, the angle tuning accuracy of 1 × 10^-6 rad is achieved using a stepper motor with stepping angle of 27″ and a 1 ： 200 reducing device, and the transmission spectrum of F-P etalon is obtained. Both the theory and the experiment indicate that the angle tuning technique is feasible and convenient in double edge technique.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2008年第4期462-465,共4页
Journal of Optoelectronics·Laser
基金
哈尔滨工业大学光电子技术研究所创新团队基金支持
哈尔滨工业大学优秀青年教师培养计划资助项目(HITQNJS2006025)
