Title :
Localization in nonline-of-sight environments for wireless sensor networks
Author :
Tewfik, Ahmed H. ; Srirangarajan, Seshan
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., USA
fDate :
31 Jan.-2 Feb. 2005
Abstract :
In this paper we present a ranging algorithm for indoor quasistatic sensor environments based on statistical modeling of the multipath channel. Based on the noise and LOS characterization from this model, we use multiple returns (or signal receptions) at each sensor node to accurately estimate the position of the direct path or line-of-sight (LOS) component in the received multipath signal. This provides range estimates with submeter accuracy. Furthermore, the associated ranging error does not increase with increase in the transmitter-receiver range.
Keywords :
distance measurement; indoor radio; multipath channels; wireless sensor networks; LOS characterization; direct path; indoor quasistatic sensor environment; line-of-sight component; multipath channel; multipath signal; ranging algorithm; statistical modeling; transmitter-receiver range; wireless sensor network; Computer networks; Computer vision; Fires; Intelligent networks; Multipath channels; Sensor phenomena and characterization; Temperature sensors; USA Councils; Wireless communication; Wireless sensor networks;
Conference_Titel :
Wireless Sensor Networks, 2005. Proceeedings of the Second European Workshop on
Print_ISBN :
0-7803-8801-1
DOI :
10.1109/EWSN.2005.1462035
