Unscented Kalman Filter for location in Non-Line-Of-Sight

Author

Bosch, Marc ; Najar, Montse

Author_Institution

Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain

fYear

2006

fDate

4-8 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

This paper deals with the problem of Non Line Of Sight (NLOS) in wireless communications systems devoted to location purposes. It is well known that NLOS condition, which is mainly due to blocking of transmitted signal by obstacles, biases Time Of Arrival (TOA) estimates therefore providing biased position. The objective of this paper is to analyze the improvements in positioning accuracy tracking the TOA bias with the Unscented Kalman Filter (UKF) proposed for location estimation. The evaluation of the approach has been carried out in Impulse Radio Ultra-Wideband (IR-UWB) communications systems.

Keywords

Kalman filters; nonlinear filters; time-of-arrival estimation; ultra wideband communication; IR-UWB communications systems; NLOS condition; TOA bias; impulse radio ultra-wideband communications systems; location estimation; positioning accuracy tracking; time of arrival estimates; transmitted signal; unscented Kalman filter; wireless communications systems; Estimation; Kalman filters; Mobile communication; Nonlinear optics; Sensors; Signal processing algorithms; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2006 14th European

Conference_Location

Florence

ISSN

2219-5491

Type

conf

Filename

7071620