美国国家海洋与大气管理局波传播实验室的科学家,目前正对卫星上的全球性测风仪(Windsat)进行可行性研究。这种仪器打算在空间轨道站运用,它利用多普勒光雷达技术测量风速。该仪器把激光束指向地球,探测风送尘埃粒子的反向散射光。风的方向和速度的计算以反射辐射的频率变化为基础。对不同方向进行相继的观测,可以得到两个水平方向风速的分量。 Scientists at the National Oceanic and Atmospheric Administration Wave Propagation Laboratory are currently conducting a feasibility study on a global satellite windsat. The instrument is intended for use at the space station, which uses Doppler radar technology to measure wind speed. The instrument points the laser beam to the Earth and detects the backscattered light from the wind that sends the dust particles. Wind direction and speed are calculated based on the frequency of the reflected radiation. By observing the different directions one after the other, two components of wind speed in the horizontal direction can be obtained.