TDOA assisted RSSD localization in UWB

W. Gerok, J. Peissig, T. Kaiser
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引用次数: 11

Abstract

This paper considers ultra-wideband (UWB) based localization of mobile users in indoor environment. Because of severe multipath indoor localization still presents a challenging issue and UWB is often considered as technology enabling precise localization. Typically for UWB Time of Flight (TOF) based approaches like Time of Arrival (TOA) or Time Difference of Arrival (TDOA) are applied. Recently also localization based on Received Signal Strength (RSS) is gaining more interest, where position of the transmitting device is calculated based on the RSS on several Base Stations (BS) with known positions. To perform the positioning the transmit power must be known. This paper considers Received Signal Strength Difference (RSSD) based positioning, which does not require the knowledge of the transmit power. The positioning is further assisted with TDOA measurement. It is shown that including only one single TDOA information improves the localization performance significantly.
TDOA辅助超宽带RSSD定位
本文研究了基于超宽带的室内环境下移动用户定位问题。由于严重的多径环境,室内定位仍然是一个具有挑战性的问题,而超宽带通常被认为是一种能够实现精确定位的技术。对于超宽带飞行时间(TOF),通常采用到达时间(TOA)或到达时间差(TDOA)等方法。最近,基于接收信号强度(RSS)的定位也获得了更多的兴趣,其中发射设备的位置是根据几个已知位置的基站(BS)的RSS计算的。要进行定位,必须知道发射功率。本文考虑了基于接收信号强度差(RSSD)的定位方法,该方法不需要知道发射功率。通过TDOA测量进一步辅助定位。结果表明,仅包含单个TDOA信息可显著提高定位性能。
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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