激光测速雷达的性能对比分析

激光测速雷达较传统大气数据系统在测量精度方面有显著的优势。为了能够在稳定流场下实现对比测试,将激光测速雷达和高精度超声波风速风向仪一同放置于风塔200 m高度进行长时间对比。以10 min、1 min、1 s、0.1 s为尺度对两者测量的真空速(风速)和侧滑角(风向)进行分析。数据表明激光测速雷达的测量精度和超声波风速风向仪(速度精度0.18 m/s、风向2°)是同级别的。

Performance Comparision and Analysis of Laser Velocimetry Radar

Compared with the traditional atmospheric data system,the laser velocimetry radar has obvious advantages in measuring accuracy.In order to realize the comparison test under the stable flow field,the laser velocimetry radar and the high-precision ultrasonic anemometer are placed together at the height of 200 m in the wind tower for a long-time comparison.The true airspeed (wind speed) and sideslip angle (wind direction) measured by them are analyzed at 10 min,1 min,1 s and 0.1 s.The test data show that the measuring accuracy of the laser velocimetry radar is in the same grade as that of ultrasonic anemometer (velocity accuracy 0.18 m/s,wind direction 2°).