【摘要】 本文简要地介绍了多普勒测风声雷达的基本原理和探测方法。指出用锁相技术可以较精确地测量多普勒频偏值。根据声雷达观测资料计算了水平风速、风向和垂直风速,并与325米气象塔上直接测量的仪器进行了比较。结果表明,两种方法测量的水平风速、风向的平均值比较接近,声雷达测量的垂直风速比塔上直接测量的结果略有偏高。用声雷达测量的水平风速、风向和垂直风速的方差都比直接测量的大。 我们用多普勒测风声雷达的连续观测资料,计算了垂直风速谱,得到了在对流边界层中垂直速度谱随高度的分布规律。在一定的频率范围内（低频部分）得到了功率谱fP（f）ocf⁺¹的规律,并将240米高度上用声雷达测量的垂直速度谱和直接测量的垂直速度谱进行了比较。更多还原

【Abstract】 In this article the fundamental principle and detecting method of acoustic Doppler radar for measuring wind are briefly discussed. The phase-locking technique can measure the Doppler frequency shift precisely. Using the observation data of acoustic Doppler radar, the horizontal velocity, wind direction and vertical velocity are calculated and compared with those obtained by direct measurement on the tower. The results show that the mean value of h orizontal velocity and wind direction are close, but the vertical velocity detected by acoustic Doppler radar is slightly greater than that measured by direct measurements.Based on the continuous observation data measured by acoustic radar, the spectrum of vertical velocity are calculated. At the height of 240 meter, the spectra of vertical velocity obtained by these two methods are compared. In a convective boundary layer, the distribution of energy spectrum of vertical velocity with height is obtained. In lower frequency range the power spectrum distribution fits the law of fp(f)∝f+1更多还原