Radio aeronomy in Nigeria: First results from very low frequency (VLF) radio waves receiving station at Anchor University, Lagos

V. Nwankwo, S. Chakrabarti, S. Sasmal, W. Denig, M. P. Ajakaiye, Timothy Akinsola, Muyiwa Adeyanju, Paul I. Anekwe, K. Iluore, M. Olátúnjí, D. Bhowmick, J. Fatokun, M. Ayoola, O. Soneye, Joel Ajamu
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引用次数: 1

Abstract

The study of the Earth’s atmosphere and the space environment is important because of the role played by the medium in the activities that affect the Earth and its inhabitants directly or indirectly. A robust capability to monitor, model and predict the happenings in the atmospheric space through deployment of both space- and ground-based observational systems for data acquisition, is key to result-oriented scientific research in atmospheric and space sciences. In this paper, we highlight the importance of regional deployment of observational facilities for data acquisition to complement current observational tools. We briefly review the capabilities of very low frequency (VLF) radio waves (in monitoring and studying changes in the atmosphere and ionosphere), and also present data obtained from our newly deployed VLF radio waves receiver at Anchor University, Lagos (AUL). We show that the diurnal signature characterised by VLF radio signal reflected in the data of three of four propagation paths (AUL-HWU, AUL-JJI, AUL-NWC and AUL-VTX) received at AUL. This outcome shows that operational condition of the VLF radio wave receiver is good. We anticipate interesting findings as we exploit this institution-based dataset to probe ionospheric irregularities in our region for the first time. In the light of some identified ionospheric changes in the equatorial region, we anticipate that our research effort using this regional VLF dataset will yield new results that will be resourceful for better understanding and characterisation of the dynamics of the equatorial D-layer ionosphere, since our region of reception (Lagos) lies close to the equator.
尼日利亚的无线电航空学:第一个结果来自拉各斯Anchor大学的甚低频(VLF)无线电波接收站
对地球大气层和空间环境的研究是重要的,因为在直接或间接影响地球及其居民的活动中,大气层和空间环境所起的作用。通过部署空间和地面观测系统进行数据采集,建立监测、模拟和预测大气空间事件的强大能力,是大气和空间科学以结果为导向的科学研究的关键。在本文中,我们强调了区域部署观测设施以获取数据以补充现有观测工具的重要性。我们简要回顾了甚低频(VLF)无线电波(在监测和研究大气和电离层变化方面)的能力,并介绍了我们在拉各斯锚大学(AUL)新部署的甚低频无线电波接收器获得的数据。研究表明,在AUL接收到的四个传播路径(AUL- hwu、AUL- jji、AUL- nwc和AUL- vtx)中,有三个路径的数据反映了VLF无线电信号的日特征。结果表明,该VLF无线电波接收机工作状态良好。当我们利用这个基于机构的数据集首次探测我们地区的电离层不规则性时,我们预计会有有趣的发现。鉴于赤道地区一些已确定的电离层变化,我们预计我们使用该区域VLF数据集的研究工作将产生新的结果,这将有助于更好地理解和表征赤道d层电离层的动力学,因为我们的接收区域(拉各斯)靠近赤道。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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