ABSTRACT

In the last decade, it has been shown that short-range ultra-wideband (UWB) sensors can provide promising solutions to the issue of people localization in many interesting applications. The applicability of particular localization methods utilizing this wireless technology depends on the form of the motion of the monitored person. Therefore, great effort was initially taken to localize people who always carry out the same type of movement, i.e. to localize either moving or only static persons. In real life, people do not move always by the same form of the motion, but the character of their movement is normally time-variable. Moreover, a person-monitoring system has usually no a priori information about the movement status of the person to be monitored. The issue of localization of persons moving both by an unknown and changing character of motion has not been satisfactorily addressed. Motivated by these findings, we will introduce a new concept of UWB sensor signal processing focused on localization of a person moving with an unknown and time-variable character of motion. This concept is based on the decomposition of possible motion activities of persons into a finite set of basic forms of movement defining the so-called types of persons, while a specific signal processing procedure is proposed. The corresponding form of a person's movement is first identified and then the person is detected and localized. The performance properties of this concept will be illustrated by its application for through-the-wall localization of a person moving with short and long stops.

抽象的

在过去的十年中，已经表明，短距离超宽带（UWB）传感器可以为许多有趣的应用中的人员定位问题提供有前途的解决方案。利用这种无线技术的特定定位方法的适用性取决于被监视人员的运动形式。因此，最初付出了巨大的努力来定位始终执行相同类型运动的人，即定位运动的人或仅静止的人。在现实生活中，人们并不总是以相同的运动形式运动，但其运动特征通常是随时间变化的。此外，人员监视系统通常没有关于要监视的人的运动状态的先验信息。以未知的和变化的运动特征运动的人的本地化问题尚未得到令人满意的解决。基于这些发现，我们将介绍一种UWB传感器信号处理的新概念，该概念着重于对具有未知且随时间变化的运动特征的人进行定位。该概念基于将人的可能运动活动分解为定义所谓的人类型的有限的基本运动形式集，同时提出了一种特定的信号处理程序。首先识别一个人的运动的相应形式，然后对该人进行检测和定位。该概念的性能特性将通过其在短停和长停的移动人员的整个墙面定位中的应用来说明。