无方向模糊到达角估计的光子外差混合

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-04-10 DOI:10.1016/j.optcom.2025.131810

Yang Liu, Zhen Zhou, Yang Lu, Bo Yang, Shuna Yang, Yanrong Zhai, Yiran Gao, Hao Chi

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引用次数: 0

摘要

为了克服传统电子方法的局限性，在宽带宽范围内实现高精度测量，光子方法被广泛提出用于到达角估计。在本文中，我们提出并实验验证了一种光子外差混合方法来明确估计到达角（AOA）。通过光学下转换和参考相位比较，该系统有效地解决了相位模糊问题，实现了360°相位测量范围，并将到达角（AOA）测量范围扩展到±90°（总180°）。外差混合过程可以同时进行频率估计和相位识别，为现代雷达和无线通信系统提供双重功能解决方案。实验结果表明，该系统在0°~ 360°范围内的估计误差小于5.2°，在±100°范围内的估计误差小于2.8°。

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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Photonic heterodyne mixing for angle of arrival estimation without direction ambiguity

Photonic methods for angle-of-arrival (AOA) estimation have been widely proposed to achieve high-precision measurements over a wide bandwidth, aiming to overcome the limitations of traditional electronic methods. In this paper, we propose and experimentally verify a photonic heterodyne mixing approach for unambiguous estimation of angle-of-arrival (AOA). By employing optical down-conversion and reference phase comparison, our system effectively resolves phase ambiguity, achieving a 360°phase measurement range and extending the angle-of-arrival (AOA) measurement range to ±90°(180°total). The heterodyne mixing process enables simultaneous frequency estimation and phase discrimination, offering a dual-function solution for modern radar and wireless communication systems. Based on the experimental results, our system demonstrates an estimation error of less than 5.2°within the range of 0°to 360°and less than 2.8°within the range of ±100°.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.