With the rapid development of wireless communication technology, various indoor location-based services (ILBSs) have gradually penetrated into daily life. Although many other methods have been proposed to be applied to ILBS in the past decade, WiFi-based positioning techniques with a wide range of infrastructure have attracted attention in the field of wireless transmission. In this survey, the authors divide WiFi-based indoor positioning techniques into the active positioning technique and the passive positioning technique based on whether the target carries certain devices. After reviewing a large number of excellent papers in the related field, the authors make a detailed summary of these two types of positioning techniques. In addition, they also analyse the challenges and future development trends in the current technological environment.

中文翻译：

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基于WiFi的室内定位技术调查

随着无线通信技术的飞速发展，各种室内定位服务（ILBS）逐渐渗透到日常生活中。尽管在过去的十年中已经提出了许多其他方法可以应用于ILBS，但是具有广泛基础设施的基于WiFi的定位技术已引起无线传输领域的关注。在这项调查中，作者根据目标是否携带某些设备将基于WiFi的室内定位技术分为主动定位技术和被动定位技术。在回顾了相关领域的大量优秀论文之后，作者对这两种定位技术进行了详细的总结。此外，他们还分析了当前技术环境中的挑战和未来的发展趋势。