Newly acquired multi-receiver capability of Advanced Indian MST radar has been utilized to implement the spaced antenna (SA) technique for profiling of winds and turbulence. Two experiments were conducted. In Experiment 1, in addition to the traditional Full Correlation Analysis (FCA), SA analysis is also performed on off-vertical beam measurements (hereafter Oblique Spaced Antenna [OSA]) and the products are evaluated against those retrieved with Doppler Beam Swinging (DBS) and collocated GPS radiosonde. In Experiment 2, the dependence of height coverage on antenna aperture is examined. The synchronization and phase matching of receiving channels are found to be well within the designed values. The consensus averaged zonal and meridional wind velocities obtained by FCA and OSA compare very well with DBS and radiosonde measurements with correlation coefficients >0.85 and root mean square error (RMSE) < 2 ms⁻¹. The mean value of antenna parameter, , extracted from correlation of different antenna pairs compare well with the theoretical estimate. The efficacy of in quality controlling the SA derived winds has been examined. Imposing condition has certainly removed several outliers and reduced the RMSE (relative to reference) considerably, but it also reduced useful data by 50%. The consensus averaging of winds is found to be more effective in removing outliers and reducing the RMSE. The wind variances estimated by DBS (after accounting the non-turbulent contributions) and SA agree quite well with a correlation coefficient of 0.95. Utilization of a bigger array increased the height coverage from 10-12 to 20 km.

中文翻译：

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印度先进 MST 雷达 (AIR) 的多接收器增强——间隔天线技术的实现

新获得的先进印度 MST 雷达的多接收器能力已被用于实施间隔天线 (SA) 技术，以分析风和湍流。进行了两个实验。在实验 1 中，除了传统的全相关分析 (FCA) 外，还对非垂直波束测量（以下称为斜间隔天线 [OSA]）进行了 SA 分析，并根据使用多普勒波束摆动 (DBS) 检索到的结果对产品进行了评估) 和配置的 GPS 无线电探空仪。在实验 2 中，检查了高度覆盖对天线孔径的依赖性。发现接收通道的同步和相位匹配完全在设计值内。^-1。从不同天线对的相关性中提取的天线参数的平均值与理论估计值相当。已经检查了质量控制 SA 衍生风的功效。强加条件确实消除​​了几个异常值并显着降低了 RMSE（相对于参考），但它也减少了 50% 的有用数据。发现风的一致平均在去除异常值和降低 RMSE 方面更有效。DBS（在考虑了非湍流贡献后）和 SA 估计的风方差与相关系数为 0.95 非常吻合。使用更大的阵列将高度覆盖范围从 10-12 公里增加到 20 公里。