Title :
Effect of biased measurement errors on accuracy of position location methods
Author :
Koorapaty, Havish ; Grubeck, Hans ; Cedervall, Mats
Author_Institution :
Ericsson Inc., Research Triangle Park, NC, USA
Abstract :
The effect of measurement biases on the accuracy of position location techniques with time of arrival (TOA) and time difference of arrival (TDOA) measurements is investigated. Some of the factors that cause measurement biases are lack of line of sight propagation, multipath effects and hardware calibration errors. Such biases are modelled as being constant over the position measurement interval, and the effect of these biases is investigated through the use of a circular error probability measure. It is shown that biased measurement errors may cause significant degradation in performance
Keywords :
calibration; error statistics; land mobile radio; measurement errors; position measurement; radio direction-finding; TDOA; TOA; biased measurement errors; circular error probability measure; hardware calibration errors; line of sight propagation; measurement biases; mobile wireless communication system; multipath effects; performance; position location accuracy; position location methods; time difference of arrival measurement; time of arrival measurement; Base stations; Error probability; FCC; Hardware; Least squares approximation; Measurement errors; Position measurement; Root mean square; Time difference of arrival; Time measurement;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776599
