Title :
On using multiple calibration emitters and their geometric effects for removing sensor position errors in TDOA localization
Author :
Yang, Le ; Ho, K.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Missouri, Columbia, MO, USA
Abstract :
The use of calibration emitters is known to be able to improve TDOA source localization accuracy when sensor positions are not accurate. This paper derives through CRLB analysis the conditions under which the sensor position errors can be completely eliminated in a source location estimate via deploying multiple calibration emitters whose positions can be erroneous. The implications on the geometric arrangements of calibration emitters to satisfy the conditions are elaborated. In particular, to fully remove the effect of sensor position errors, we need a sufficient number of calibration emitters and they together cannot lie in the same plane with any sensor. The theoretical developments are supported by simulations.
Keywords :
calibration; position measurement; time-of-arrival estimation; CRLB analysis; TDOA; calibration emitters; sensor position errors; source localization; Calibration; Computer errors; Covariance matrix; Direction of arrival estimation; Gas detectors; Microphone arrays; Nonlinear equations; Position measurement; Sensor arrays; Time difference of arrival; CRLB; sensor position errors; source localization; time difference of arrival;
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2010.5496241