Preliminary results of scintillation monitoring at KLEF-Guntur low latitude station using GNSS software defined radio

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-01 DOI:10.1515/jag-2024-0004

Venkata Ramana Gandreti, S. Miriyala, Venkateswara Rao Tanneeru, Venkata Ratnam Devanaboyina, Kshitija Deshpande

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引用次数: 0

Abstract

Global Navigation Satellite Systems (GNSS) have become an integral part of modern life, supporting various applications, from precise positioning and navigation to timing and synchronization. However, GNSS signals are vulnerable to natural interferences including various atmospheric disturbances, with ionospheric scintillations being a significant challenge. Ionospheric scintillations, caused by irregularities in the Earth’s ionosphere, introduce rapid fluctuations in the amplitude and phase of GNSS signals. These fluctuations can severely degrade the accuracy and reliability of GNSS receivers, leading to positioning errors and navigation failures. Hence, it is crucial to develop effective mitigation strategies. One of the promising approaches to mitigate ionospheric scintillations is the utilization of Software Defined Radio (SDR) technology in GNSS receivers. SDR allows for real-time adaptation to changing signal conditions, enabling the receiver to detect scintillations and adjust its signal processing accordingly. This adaptability enhances the receiver’s stability against ionospheric disturbances, ensuring more robust and accurate positioning and navigation. In this paper, preliminary results of GNSS SDR (Make: iP-Solutions, Japan) installed at Koneru Lakshmaiah Education Foundation (KLEF), Vaddeswaram (Guntur) (16.44° N, 80.62° E) are presented. Amplitude scintillation index (S4) variations for different PRNs and subsequent positioning results are interpreted from April to September 2023. The results are compared and validated with those of the co-located Novatel GNSS receiver and NAVIC receiver. Most of the S4 variations correlate well with the S4 values from the Novatel and NAVIC receivers. S4 observations from the Septentrio receiver at Daytona Beach (Florida) are also presented. The results of SDR will be extended further for the development of scintillation mitigation algorithms. We plan to install an SDR and employ similar mitigation strategy at this location in the near future.

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利用全球导航卫星系统软件无线电在 KLEF-Guntur 低纬度站进行闪烁监测的初步结果

全球导航卫星系统（GNSS）已成为现代生活不可或缺的一部分，支持从精确定位和导航到计时和同步等各种应用。然而，全球导航卫星系统信号容易受到自然干扰，包括各种大气干扰，其中电离层闪烁是一个重大挑战。电离层闪烁是由地球电离层中的不规则现象引起的，会导致全球导航卫星系统信号的振幅和相位快速波动。这些波动会严重降低全球导航卫星系统接收器的精度和可靠性，导致定位错误和导航失败。因此，制定有效的缓解策略至关重要。减缓电离层闪烁的可行方法之一是在全球导航卫星系统接收器中使用软件无线电（SDR）技术。SDR 允许实时适应不断变化的信号条件，使接收器能够检测闪烁并相应调整其信号处理。这种适应性增强了接收器抵御电离层干扰的稳定性，从而确保更稳健、更准确的定位和导航。本文介绍了安装在 Vaddeswaram（Guntur）（北纬 16.44°，东经 80.62°）的 Koneru Lakshmaiah 教育基金会（KLEF）的 GNSS SDR（制造商：iP-Solutions，日本）的初步结果。对 2023 年 4 月至 9 月期间不同 PRN 的振幅闪烁指数（S4）变化和随后的定位结果进行了解释。这些结果与同地的 Novatel GNSS 接收器和 NAVIC 接收器的结果进行了比较和验证。大多数 S4 变化与 Novatel 和 NAVIC 接收器的 S4 值关联良好。此外，还介绍了戴托纳海滩（佛罗里达州）Septentrio 接收器的 S4 观测结果。将进一步扩展 SDR 的结果，以开发闪烁减缓算法。我们计划在不久的将来在这个地点安装一个 SDR 并采用类似的减弱战略。

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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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.