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[转载]【雷达与对抗】【2008】大气的雷达和光学研究

已有 907 次阅读 2021-4-8 17:31 |系统分类:科研笔记|文章来源:转载

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本文为澳大利亚阿德莱德大学(作者:Iain Murray Reid)的博士论文,共270页。

 

本文的研究主要分为三个方面。

 

第一个领域涉及各种大气过程和现象的观测解释。这里的重点是大气内部重力波及其在雷达风和气辉强度中的表现,但也包括对大气潮汐和行星尺度波、D区电子密度和碰撞频率的研究,还包括大气后向散射和部分反射区、极地中层夏季回波、流星轨迹、中层温度、大气辉光强度的长周期变化和开尔文-亥姆霍兹不稳定性的纵横向敏感性。

 

第二个主要领域是开发新的实验技术,并验证现有的大气调查技术。新技术包括用于测量动量通量的双波束雷达技术,以及用于多接收通道的多普勒雷达时域干涉测量法和混合多普勒干涉测量法。

 

本文用解析方法研究了非均匀、周期性变化风场中的多普勒波束控制技术,并用大气雷达后向散射的数值模型和与其它技术直接比较,研究了各种间距传感器技术。钠激光雷达技术已经通过数值模型计算进行了研究,目前正在开发一个固态系统。最后,一项主要活动是开发新的雷达和雷达子系统,包括研制模块化中频多普勒雷达和中频间距天线雷达、各种平流层-对流层/中层-平流层-对流层雷达、电离层雷达、边界层-对流层雷达和全天空流星雷达。

 

The research described in this thesis can be categorized into three main areas. The first area concerns the interpretation of observations of various atmospheric processes and phenomena. The focus here has been on internal atmospheric gravity waves and their manifestation in radar winds and in airglow intensities, but also includes investigation of atmospheric tides and planetary scale waves, D-regionelectron densities and collision frequencies, the aspect sensitivity of backscattering and partially reflecting regions of the atmosphere, Polar Mesosphere Summer Echoes and Mesosphere Summer Echoes, meteor trails, mesospheric temperatures, long period variations in airglow intensities, and Kelvin Helmholtz Instabilities. The second major area has been in the development of new experimental techniques and the validation of existing techniques for investigating the atmosphere. New techniques have included the dual–beam radar technique for measuring momentum fluxes, and radar Time Domain Interferometry and Hybrid Doppler Interferometry for use with multi-receiver channel Doppler radars. The Doppler Beam Steering technique in the presence of non-uniform and periodically varying wind fields has been investigated analytically, and various spaced sensor techniques have been investigated using a numerical model of atmospheric radar backscattering and by direct comparison with other techniques. The Sodium Lidar technique has been investigated through numerical model calculations and a solid state system is currently being developed. Finally, a major activity has been the development of new radars and radar sub systems. This has included the development of a modular Medium Frequency Doppler radar and a Medium Frequency Spaced Antenna radar, a variety of Stratosphere Troposphere / Mesosphere Stratosphere Troposphere radars, an Ionospheric radar, a Boundary Layer Tropospheric radar and an All-Sky meteor radar.

 

1.       引言

2. 个人简历

3. 发表文献列表

4. 研究资助

5. 研究监督

6. 评论及精选论文

7. 选定的商用雷达系统

8. 小结与结论


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