摘要
为了解决传统大气数据系统低空速测量不准确的问题,采用了以光学多普勒频移为基本原理的低空速测量方法,并以快速傅里叶变换为数据处理框架构建了一套实验样机,通过标准风洞实验验证,得出系统能稳定测量的最小风速为0.22m/s。结果表明,该系统在不同风速下,均具有较高的分辨率和稳定性。
In order to solve the incorrect low-airspeed detection of traditional air data system, a low-airspeed detectionmethod based on optical Doppler frequency shift was founded. An experimental prototype was built by using fast Fourier transformas data processing framework. By the experiment of standard wind tunnel, the system can measure minimum wind speed of0. 22m/s. The results show that the system has high resolution and stability at different wind speeds.
出处
《激光技术》
CAS
CSCD
北大核心
2016年第5期629-632,共4页
Laser Technology
基金
中航工业技术创新基金资助项目(2012D16132)
关键词
遥感
低空速测量
快速傅里叶变换
高分辨率
remote sensing
low-airspeed detection
fast Fourier transform
high precision
