Title :
A sequential extension of the unified MAP track estimation method
Author :
Zarnich, Robert E. ; Bell, Kristine L. ; Van Trees, Harry L.
Author_Institution :
Sch. of Inf. Technol. & Eng., George Mason Univ., Fairfax, VA, USA
Abstract :
A maximum a-posteriori (MAP) estimator for multitarget tracking based on sensor array data has been derived for temporally uncorrelated signals and uncorrelated contact tracks. This batch estimator is an iterative algorithm employing a nested pair of expectation maximization (EM) based algorithms. The `hidden data´ are direction-of-arrival estimates of synthetic signal estimates, each conditioned on prior track distributions. In this paper, the batch method is extended to operate in a sequential manner by defining a moving batch window and stride for processing the incoming data. Comparisons to the full batch method are presented and discussed
Keywords :
array signal processing; direction-of-arrival estimation; iterative methods; optimisation; sequential estimation; target tracking; DOA estimation; batch estimator; direction-of-arrival estimates; expectation maximization based algorithms; iterative algorithm; maximum a-posteriori estimator; moving batch window; multitarget tracking; sensor array data; sequential extension; synthetic signal estimates; temporally uncorrelated signals; track distribution; uncorrelated contact tracks; unified MAP track estimation method; Data engineering; Direction of arrival estimation; Geometry; Iterative algorithms; Maximum a posteriori estimation; Sensor arrays; Sensor systems; State estimation; State-space methods; Target tracking;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop. 2000. Proceedings of the 2000 IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-6339-6
DOI :
10.1109/SAM.2000.877976
