On The Real Time Data Processing of UHF Interferometer

超高频干涉仪实时数据处理研究

• 批准号: 06452200
• 负责人: KAWASAKI Zenichiro
• 金额: $ 3.52万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452200/
• 关键词: winter thunderstorm; interferometer; lightning channel; imaging; capacitive antenna; electric field change; leader; return strokes

We designed and manufactured an Radio Interferometric Receiver to reconstruct lightning channels and progressions inside thunderclouds to understand lightning features. To obtain the high time resolution we digitize the observed data every one microsecond. The receiver consists of eight channels, and the volume of one data set is 20 Mbytes. Due to the enormous size of a data set it is not easy to realize a real time data processing. We operate the Interferometer to observe the Laser Triggered Lightning, and the demand to get a real time image of a lightning channel is increasing. At the beginning of this project we intended to achieve our requirement by using the Digital Signal Processor (DSP). We recognized the recent development of Engineering Workstation (EWS) enables us to carry out the real time data processing. We reorganized the whole system including Interferometric receiver, A/D converter and EWS.We finally realize the quasi Real Time Data Processing for Lightning Observations, and conducted the Winter Thunderstorm Project and the maritime Continent Thunderstorm Experiment. During these two project we operated our Interferometer and captured many interesting data sets. The data processing in detail is now undergoing.

我们设计并制造了无线电干涉接收器，用于重建雷雨云内的闪电通道和进展，以了解闪电特征。为了获得高时间分辨率，我们将每一微秒观测到的数据数字化。接收器由8个通道组成，一组数据量为20 Mbytes。由于数据集规模巨大，实现实时数据处理并不容易。我们操作干涉仪来观测激光触发闪电，并且获得闪电通道实时图像的需求越来越大。在这个项目开始时，我们打算通过使用数字信号处理器（DSP）来实现我们的要求。我们认识到最近开发的工程工作站（EWS）使我们能够进行实时数据处理。我们对整个系统进行了改造，包括干涉接收机、A/D转换器和EWS，最终实现了闪电观测数据的准实时处理，并开展了冬季雷暴项目和海上大陆雷暴实验。在这两个项目中，我们操作了干涉仪并捕获了许多有趣的数据集。目前正在进行详细的数据处理。

项目成果

M.Wada et al.: "UHF Interferometer System and Observation of Lightning Discharge : Part 1 -Performance to Interferometer System-" Trans.IEE of Japan. 116-B. 321-331 (1996)

M.Wada 等人：“UHF 干涉仪系统和闪电放电观测：第 1 部分 - 干涉仪系统性能 -”Trans.IEE of Japan。

河崎善一郎他: "SAFIR operation and evaluation of its per formance" Geophysical Research Letters. 21. 1133-1136 (1994)

Zenichiro Kawasaki 等人：“SAFIR 操作及其性能评估”地球物理研究快报 21. 1133-1136 (1994)。

王道洪,他: "Luminous propagation of lightning Attachnent" Journal of Geophysecal Research. 100. 11661-11667 (1995)

Daohong Wang 等：“闪电附件的发光传播”地球物理学研究杂志 100。11661-11667（1995）。

王 道洪 他: "A prelimincry study on laser triggered lightning" Journal of Geophysical Research. 99. 16907-16912 (1994)

Daohong Wang 等人：“激光触发闪电的初步研究”地球物理研究杂志 99. 16907-16912 (1994)。

D.Wang, T.Ushio, Z.-I.Kawasaki, K.Matsuura, Y.Shimada, S.Uchida, C.Yamanaka, Y.Izawa, Y.Sonoi and N.Simokura: "A Possible Way to Trigger Lightning Using a Laser" J.of Atmospheric and Terrestrial Physics. 57,5. 456-466 (1995)

D.Wang、T.Ushio、Z.-I.Kawasaki、K.Matsuura、Y.Shimada、S.Uchida、C.Yamanaka、Y.Izawa、Y.Sonoi 和 N.Simokura：“触发闪电的一种可能方法