A Study on Optimum Tilt Angle for Wind Estimation Using Indian MST Radar
A Study on Optimum Tilt Angle for Wind Estimation Using Indian MST Radar
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印度MST雷达测风最佳倾角研究
DOI：
10.1175/2008jtecha1030.1
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发表时间：
2008
影响因子：
2.2
通讯作者：
P. Reddy
中科院分区：
文献类型：
--
作者：
V. K. Anandan;I. Rao;P. Reddy
摘要利用位于Gadanki（13.45°N，79.18°E）的印度MST雷达研究了倾斜角对水平风估计的影响。它在多普勒波束摆动（DBS）模式下工作，波束宽度为3°。水平风是在3°到15°的不同倾角下计算的，从3.6-18 km的高度范围内以3°为增量。计算有效波束指向角（θeff）以确定方位敏感度对水平风分量确定的影响。对于不同的倾斜角雷达派生风进行比较，同时GPS探空仪测风，这是从附近的网站推出。第一种方法利用雷达导出的风与使用实际波束指向角的GPS探空仪的风的直接比较;第二种方法使用从两个倾斜波束的比率导出的有效波束指向角。对于这项研究的各种统计数据进行了探讨，在标准差，相关系数，和…
Abstract The effect of tilt angle on horizontal wind estimation is studied using Indian mesosphere–stratosphere–troposphere (MST) radar located at Gadanki (13.45°N, 79.18°E). It operates in Doppler beam swinging (DBS) mode with a beamwidth of 3°. Horizontal winds are computed for different tilt angles from 3° to 15° with an increment of 3° from a height range of 3.6–18 km. The effective beam pointing angle (θeff) is calculated to determine the effect of aspect sensitivity on the determination of horizontal wind components. For different tilt angles radar-derived winds are compared with simultaneous GPS sonde wind measurements, which were launched from a nearby site. The first method utilizes direct comparison of radar-derived winds with those of GPS sondes using the actual beam pointing angle; the second method uses the effective beam pointing angle derived from the ratios of two oblique beams. For this study a variety of statistics were explored in terms of standard deviation, correlation coefficient, an...