KFU. Card publication. High-precision estimation of meteor radio echo angle of arrival over long antenna baselines under strong phase ambiguity

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HIGH-PRECISION ESTIMATION OF METEOR RADIO ECHO ANGLE OF ARRIVAL OVER LONG ANTENNA BASELINES UNDER STRONG PHASE AMBIGUITY

Form of presentation

Articles in international journals and collections

Year of publication

2025

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Authors, employees of KFU

Korotyshkin Dmitriy Viktorovich, author

Bibliographic description in the original language

Dmitry Korotyshkin, High-precision estimation of meteor radio echo angle of arrival over long antenna baselines under strong phase ambiguity, Advances in Space Research, Volume 75, Issue 11, 2025, Pages 8374-8390, https://doi.org/10.1016/j.asr.2025.03.056.

Annotation

This paper introduces a novel, universal, and computationally efficient technique for accurately determining the angles of arrival of meteor radio echoes acquired by meteor radar systems. Unlike traditional approaches, which rely on short baselines or specific antenna layouts, the proposed method is designed to address the challenge of strong phase ambiguity in the estimation of meteor echo arrival angles for arbitrary antenna layouts and long baselines in the antenna array. Besides, this technique utilizes the full information contained in the signal while maintaining minimal computational workload. The technique proposed in this study not only ensures high precision in angle determination and minimizes the percentage of rough errors but also enhances the overall efficiency of the meteor radar complex. By leveraging a comprehensive signal processing approach, the method accounts for key factors such as the non-planarity of the antenna field and the sphericity issues of the wavefront, which are often overlooked in conventional systems. Approbation of the proposed technique is performed on modernized phase interferometer of the meteor radar complex of Kazan Federal University (KFU) located in Russia. Taking into account the modernization of the antenna field to a size of 225�×�150 meters at the KFU meteor radar, this modernization has demonstrated a 3.6–6 times improvement in the accuracy of the angles of arrival compared to the classical SKiYMET radar with an antenna field size of 45�×�45 meters. Importantly, these advancements are achieved with significantly reduced computational complexity, making the method both practical and scalable. The new approach presented in this paper is intended to open a new era of high-precision meteor observations on long baselines. It is expected to play a crucial role in advancing the study of fine altitude structures of the mesosphere-lower thermosphere dynamics, as well as in solving astronomical problems related to meteors and meteor showers.

Keywords

Meteor; Radar; Angular coordinates; Ambiguity; Angles of arrival; AOA; Direction of arrival; DOA; Long baseline

The name of the journal

ADVANCES IN SPACE RESEARCH

URL

https://www.sciencedirect.com/science/article/abs/pii/S0273117725002959?via%3Dihub

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=318604&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Korotyshkin Dmitriy Viktorovich	ru_RU
dc.date.accessioned	2025-01-01T00:00:00Z	ru_RU
dc.date.available	2025-01-01T00:00:00Z	ru_RU
dc.date.issued	2025	ru_RU
dc.identifier.citation	Dmitry Korotyshkin, High-precision estimation of meteor radio echo angle of arrival over long antenna baselines under strong phase ambiguity, Advances in Space Research, Volume 75, Issue 11, 2025, Pages 8374-8390, https://doi.org/10.1016/j.asr.2025.03.056.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=318604&p_lang=2	ru_RU
dc.description.abstract	ADVANCES IN SPACE RESEARCH	ru_RU
dc.description.abstract	This paper introduces a novel, universal, and computationally efficient technique for accurately determining the angles of arrival of meteor radio echoes acquired by meteor radar systems. Unlike traditional approaches, which rely on short baselines or specific antenna layouts, the proposed method is designed to address the challenge of strong phase ambiguity in the estimation of meteor echo arrival angles for arbitrary antenna layouts and long baselines in the antenna array. Besides, this technique utilizes the full information contained in the signal while maintaining minimal computational workload. The technique proposed in this study not only ensures high precision in angle determination and minimizes the percentage of rough errors but also enhances the overall efficiency of the meteor radar complex. By leveraging a comprehensive signal processing approach, the method accounts for key factors such as the non-planarity of the antenna field and the sphericity issues of the wavefront, which are often overlooked in conventional systems. Approbation of the proposed technique is performed on modernized phase interferometer of the meteor radar complex of Kazan Federal University (KFU) located in Russia. Taking into account the modernization of the antenna field to a size of 225�×�150 meters at the KFU meteor radar, this modernization has demonstrated a 3.6–6 times improvement in the accuracy of the angles of arrival compared to the classical SKiYMET radar with an antenna field size of 45�×�45 meters. Importantly, these advancements are achieved with significantly reduced computational complexity, making the method both practical and scalable. The new approach presented in this paper is intended to open a new era of high-precision meteor observations on long baselines. It is expected to play a crucial role in advancing the study of fine altitude structures of the mesosphere-lower thermosphere dynamics, as well as in solving astronomical problems related to meteors and meteor showers.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	High-precision estimation of meteor radio echo angle of arrival over long antenna baselines under strong phase ambiguity	ru_RU
dc.type	Articles in international journals and collections	ru_RU