Engineering Research Equipment Grant: An Upgrade of a Computer Workstation Facility for Statistical Signal Analysis of Atmospheric Radar Data

从雷达信号的频谱分析中得到的参数，即。它们的强度、多普勒频移和多普勒扩散包含有关大气中风和湍流的信息。对这些参数的时间和空间序列的进一步统计分析反过来又提供了有关受重力影响的大气波现象、这些波与风的相互作用以及它们最终分解为小尺度混沌或湍流运动的信息。雷达信号被湍流散射的机制以及从这些信号中提取最有用的参数的最佳技术也是设计雷达实验的重要内容。美国、日本、西德和斯堪的纳维亚半岛已经建造了几个中层大气雷达设施。我们继续可以使用其中一些雷达设施来设计和进行新的实验，并获得与它们一起收集的数据。凯斯西储大学致力于雷达和雷达探测数据磁带的统计信号处理，结果的复杂图形显示，根据大气中的流体波和湍流现象解释这些结果，以及大气湍流和探测无线电波之间的相互作用机制。预计在今后三年内，通过购买这笔赠款提供的数据处理和图形设备，可以支持大约7-8篇硕士论文和2-3篇博士论文。

Parameters derived from spectral analysis of radar signals, viz. their strength, Doppler shift, and Doppler spread, contain information about winds and turbulence in the atmosphere. Further statistical analyses of time and spatial series of these parameters in turn provide information about atmospheric wave phenomena influenced by gravity, interactions of these waves with winds, and about their eventual breakdown into small scale chaotic or turbulent motions. The mechanisms through which radar signals are scattered by turbulence and optimum techniques for deriving most useful parameters from these signals are also of significant interest for designing radar experiments. Several middle atmosphere radar facilities have been constructed in the U.S., Japan, West Germany, and Scandinavia. We continue to have access to some of these radar facilities for designing and conducting new experiments, and to data collected with them. Efforts at Case Western Reserve University (CWRU) are directed towards the statistical signal processing of radar and rawinsonde data tapes, sophisticated graphical displays of results, interpretation of these results in terms of fluid wave and turbulence phenomena in the atmosphere, and on mechanisms of interactions between atmospheric turbulence and the probing radio waves. It is anticipated that over the next three years about 7-8 MS and 2-3 Ph.D. theses could be supported with the purchase of the data processing and graphics equipment provided by this grant.