美国佐治亚技术学院近日研制了一种单引出瑞长轨道激光传感器——风速表。人们可以用它来跟踪空气中的污染情况，测量风速和风向；以便提高飞机的飞行安全性，并使气象预报更加精确。相比之下，老式的机械风速测量仪不能检测到风的变动情况。开始，人们希望把这种激光传感器和 Georgia Institute of Technology recently developed a single lead Swiss long track laser sensor - anemometer. One can use it to track pollution in the air, measure wind speed and direction, to improve the flight safety of the aircraft and to make the weather forecasts more accurate. In contrast, the old mechanical wind speed measuring instrument can not detect the wind changes. At first, people wanted to make this laser sensor and