Object tracking in a 2D UWB sensor network

Author

Chang, Cheng ; Sahai, Anant

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

1

fYear

2004

fDate

7-10 Nov. 2004

Firstpage

1252

Abstract

We consider object tracking by a UWB sensor network using multipath measurements in different scenarios: single Tx with single Rx, multiple Tx with single Rx and multiple Tx with multiple Rx. For each scenario, we examine the Cramer-Rao lower bound (CRLB) for the high-SNR case where multipath measurements are corrupted by iid Gaussians. We focus on the dense network asymptotics and show how the CRLB is inversely proportional to the number of measurements available to the network as a whole, even when the individual measurements are taken from different locations. An order-optimal semilinear algorithm is given.

Keywords

Gaussian noise; distance measurement; multipath channels; optimisation; radar receivers; radar tracking; radar transmitters; ultra wideband radar; wireless sensor networks; 2D UWB sensor network; CRLB; Cramer-Rao lower bound; dense network asymptotic; iid Gaussian; multipath measurement; multiple receiver; multiple transmitter; object tracking; order-optimal semilinear algorithm; Computer science; Electric variables measurement; Gaussian processes; Intelligent networks; Physical layer; Radar tracking; Reflection; Transmitters; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on

Print_ISBN

0-7803-8622-1

Type

conf

DOI

10.1109/ACSSC.2004.1399342

Filename

1399342