Performance Analysis of Optimum Tilt Angle and Beam Configuration to Derive Horizontal Wind Velocities by Postset Beam Steering Technique
Performance Analysis of Optimum Tilt Angle and Beam Configuration to Derive Horizontal Wind Velocities by Postset Beam Steering Technique
复制标题
通过后置波束转向技术导出水平风速的最佳倾斜角和波束配置的性能分析
DOI：
10.1109/tgrs.2012.2200256
复制
发表时间：
2013
影响因子：
8.2
通讯作者：
and S. V. Rao
中科院分区：
文献类型：
--
作者：
Sureshbabu;VN;V.K. Anandan;T. Tsuda;J. Furumoto;and S. V. Rao
采用软件波束合成技术，利用多接收相控阵雷达资料反演水平风速。为了提高波束合成的效率，采用Capon波束形成方法，在雷达发射波束体积（3.6°波束宽度）内，以期望的视线角合成时序信号。本文介绍了在PBS技术测量水平风速时，为减小测量误差，在最佳方向上进行波束合成的方法。为此，波束合成在各种倾斜角度与多波束配置。从合成的波束中，通过子空间方法之一来获得功率谱分布，即，特征向量（EV）。在所需的视线角的平均多普勒频率和径向风速的自适应矩估计方法从EV产生的功率谱。利用风廓线雷达在不同径向上获得的风矩，按常规方法求出水平风分量。此外，分析所需的波束数，以改善基于PBS的风估计。目前正在利用从多接收器相控阵雷达系统（日本Shigaraki中高层大气雷达）收集的数据，对各种倾斜角和波束配置的性能进行统计比较。分析结果表明，在1.5° ~ 2.0°倾角范围内，采用16波束的波束合成方案，可以减小PBS技术的水平风估计误差。
Software beam synthesis by postset beam steering (PBS) technique is used to derive the horizontal wind velocities from multireceiver phased-array radar data. In order to improve the efficiency of beam synthesis, the Capon beamforming method is used to synthesize time series signals in the desired line-of-sight angle within the radar transmit beam volume (3.6°beamwidth). This paper describes beam synthesizing in optimum directions to reduce the error in the measurement of horizontal wind velocities using the PBS technique. For this purpose, beams are synthesized at various tilt angles with multibeam configuration. From the synthesized beam, power spectral distribution is obtained by one of the subspace methods, i.e., eigenvector (EV). The mean Doppler frequency and radial wind velocity at the desired line-of-sight angle are derived by an adaptive-moment estimation method from an EV-produced power spectrum. Using the moments obtained in various radial directions, horizontal wind components are derived by the conventional method for wind profiler radars. Also, an analysis is done for the required number of beams to improve PBS-based wind estimation. The statistical comparisons of performances of various tilt angles and beam configurations are being studied using the data collected from a multireceiver phased-array radar system (middle and upper atmosphere radar, Shigaraki, Japan). The analyzed results show that beam synthesis at the tilt angle from 1.5°to 2.0°using a 16-beam configuration minimize the error in horizontal wind estimation by PBS technique.
登录
查看更多内容
应用于MST雷达回波的自适应矩估计技术
影响因子：
2.2
作者：
V. K. Anandan;P. Balamuralidhar;P. Rao;A. Jain;C. Pan
通讯作者：
C. Pan
影响因子：
1.6
作者：
R. Palmer;M. Larsen;E. L. Sheppard;S. Fukao;M. Yamamoto;T. Tsuda;S. Kato
通讯作者：
S. Kato
影响因子：
2.2
作者：
V. K. Anandan;I. Rao;P. Reddy
通讯作者：
P. Reddy
VHF 雷达的后置波束控制和干涉仪应用，用于研究低层和中层大气中的风、波浪和湍流
影响因子：
1.6
作者：
J. Röttger;H. M. Ierkic
通讯作者：
H. M. Ierkic