A bidirectional Ultra-Wideband (UWB) localization scheme is one of the three widely deployed design integration processes ordinarily destined for time-based UWB positioning systems. The key property of the bidirectional UWB localization is its ability to serve both the navigation and tracking assignments on-demand within a single localization scheme. Conventionally, the perspective of navigation and tracking in wireless localization systems is viewed distinctly as an individual system because different methodologies were required for the implementation process. The ability to flexibly or elastically combine two unique positioning perspectives (i.e., navigation and tracking) within a single scheme is a paradigm shift in the way location-based services are observed. Thus, this article addresses and pinpoints the potential of a bidirectional UWB localization scheme. Regarding this, the complete system model of the bidirectional UWB localization scheme was comprehensively described based on modular processes in this article. The demonstrative evaluation results based on two system integration processes as well as a SWOT (strengths, weaknesses, opportunities, and threats) analysis of the scheme were also discussed. Moreover, we argued that the presented bidirectional scheme can also be used as a prospective topology for the realization of precise location estimation processes in 5G/6G wireless mobile networks, as well as Wi-Fi fine-time measurement-based positioning systems in this article.

翻译：双向超宽带定位方案是基于时间测量的超宽带定位系统中三种广泛部署的设计集成方案之一。其核心特性在于能够在单一定位方案中按需同时服务于导航与追踪任务。传统上，无线定位系统中的导航与追踪视角被视为独立系统，因其实现方法各不相同。而将两种独特的定位视角（即导航与追踪）灵活或弹性地整合于同一方案中，这从根本上改变了基于位置服务的观察范式。因此，本文重点阐述并明确了双向超宽带定位方案的潜力。基于此，本文以模块化流程全面描述了双向超宽带定位方案的系统模型。文中还展示了基于两种系统集成过程的示范评估结果，并进行了该方案的SWOT（优势、劣势、机会与威胁）分析。此外，我们论证了所提出的双向方案亦可作为面向5G/6G无线移动网络及基于Wi-Fi精细时间测量定位系统中实现精确位置估计的前瞻性拓扑结构。