时间逆转的统计原理 [视角］

IF 9.4 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Signal Processing Magazine Pub Date : 2024-01-01 DOI:10.1109/MSP.2023.3324472

K. J. Ray Liu;Beibei Wang

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引用次数: 0

摘要

时间反转是一种物理原理，因其确定性聚焦效应而广为人知。最近发现的统计效应表明，时间反转聚焦点不是一个点，而是贝塞尔功率分布。这一发现可在室内提供准确可靠的速度估计，因为在室内多路径非常丰富，而且大多是非视线（NLOS）条件，因此可实现各种室内应用，如无线传感和跟踪。在这种情况下，任何已知技术都无法茁壮成长。从本质上讲，时间反转是一种有效的工具，它将多径视为虚拟传感器，具有数十万个自由度供我们使用。

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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Statistical Principles of Time Reversal [Perspectives]

Time reversal is a physical principle well known for its deterministic focusing effect. Recently discovered statistical effects show that the time reversal focusing spot is not a point but has a Bessel power distribution. This finding offers accurate and reliable speed estimation indoors, where multipaths are abundant, with mostly nonline-of-sight (NLOS) conditions, and enable various indoor applications, such as wireless sensing and tracking. No known techniques can thrive in such scenarios. In essence, time reversal is an effective tool that embraces multipaths as virtual sensors with hundreds of thousands of degrees of freedom for our utilization.

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来源期刊

IEEE Signal Processing Magazine 工程技术-工程：电子与电气

CiteScore

27.20

自引率

0.70%

发文量

123

审稿时长

6-12 weeks

期刊介绍： EEE Signal Processing Magazine is a publication that focuses on signal processing research and applications. It publishes tutorial-style articles, columns, and forums that cover a wide range of topics related to signal processing. The magazine aims to provide the research, educational, and professional communities with the latest technical developments, issues, and events in the field. It serves as the main communication platform for the society, addressing important matters that concern all members.