Title :
Continuous-discrete filtering for dim manoeuvring maritime targets
Author :
McDonald, Michael ; Balaji, Bhashyam
Author_Institution :
Defence R&D Canada, Ottawa
Abstract :
Real radar data containing a small manoeuvring boat in sea clutter is processed using a grid based finite difference implementation of continuous-discrete filtering. Both two dimensional diffusion and four dimensional constant velocity models are implemented using Gaussian and Rayleigh sea clutter models. Superior performance is observed for the constant velocity model and significant sensitivity is noted due to mismatches between actual clutter characteristics and Gaussian and Rayleigh models. A simple likelihood ratio thresholding technique is shown to provide a significant performance improvement.
Keywords :
filtering theory; finite difference methods; radar clutter; target tracking; Rayleigh sea clutter models; continuous-discrete filtering; dim manoeuvering maritime targets; finite difference method; likelihood ratio thresholding technique; two dimensional diffusion; Equations; Filtering theory; Finite difference methods; Radar clutter; Radar measurements; Radar tracking; Research and development; Sea measurements; Surveillance; Target tracking; Track-Before-Detect; continuous-discrete filtering; maritime target tracking;
Conference_Titel :
Information Fusion, 2007 10th International Conference on
Conference_Location :
Quebec, Que.
Print_ISBN :
978-0-662-45804-3
Electronic_ISBN :
978-0-662-45804-3
DOI :
10.1109/ICIF.2007.4408070