Applications of localization range from body tracking, gesture capturing, indoor plan construction to mobile health sensing. Technologies such as inertial sensors, radio frequency signals and cameras have been deeply excavated to locate targets. Among all the technologies, the acoustic signal gains enormous favor considering its comparatively high accuracy with common infrastructure and low time latency. Range-based localization falls into two categories: absolute range and relative range. Different mechanisms, such as Time of Flight, Doppler effect and phase shift, are widely studied to achieve the two genres of localization. The subcategories show distinguishing features but also face diverse challenges. In this survey, we present a comprehensive overview on various indoor localization systems derived from the various mechanisms. We also discuss the remaining issues and the future work.

中文翻译：

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室内声学定位：一项调查

定位的应用范围从身体跟踪，手势捕获，室内计划构建到移动健康感测。诸如惯性传感器，射频信号和摄像机之类的技术已被深度挖掘以定位目标。在所有技术中，考虑到其相对较高的精度，通用的基础结构和较低的时间延迟，声信号获得了极大的青睐。基于范围的本地化分为两类：绝对范围和相对范围。为了实现两种类型的定位，广泛研究了不同的机制，例如飞行时间，多普勒效应和相移。子类别显示出鲜明的特征，但也面临着各种各样的挑战。在此调查中，我们对从各种机制派生的各种室内定位系统进行了全面概述。