Title :
Ultra-wideband (UWB) transmitter location using time difference of arrival (TDOA) techniques
Author :
Young, Derek P. ; Keller, Catherine M. ; Bliss, Dan W. ; Forsythe, Keith W.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
Ultra-wideband (UWB) signals lend themselves to localization measurements using time difference of arrival (TDOA), or time delay estimation (TDE), techniques. However, TDOA estimation is complicated by pulse distortion due to the antenna elements, other system components, and the multipath propagation environment. This paper explores the use of cross correlation based TDOA methods in conjunction with a novel technique for combining the TDOA estimates from multiple antenna pairs to build an estimate of the transmitter position. Experiments that simulate foliage and industrial environments were performed in an anechoic chamber. Results from these measurements are presented.
Keywords :
anechoic chambers (electromagnetic); antenna arrays; broadband networks; correlation theory; delay estimation; distortion; electromagnetic pulse; multipath channels; radio transmitters; radiowave propagation; UWB signal; anechoic chamber; antenna element; cross correlation; localization measurement; multipath propagation; multiple antenna pair; position estimation; pulse distortion; time delay estimation; time difference of arrival technique; ultra-wideband transmitter location; Antenna accessories; Antenna measurements; Antennas and propagation; Delay effects; Delay estimation; Distortion measurement; Time difference of arrival; Time measurement; Transmitters; Ultra wideband technology;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1292184
