ensimulations

Ivan Gentil

2) Search for targets in a one-dimensional torus.

One is interested to m targets moving at the space {1,...,N} where we suppose that N+1=1. Each target moves in a following way: at each step one chooses between two dynamics and then the target moves with the dynamic.

Article: This work is detailed in the article (in preparation): "Filtering for detecting multiple targets trajectories on a one-dimensional torus" (.ps)(.pdf) .

C++ Programs: Here the C++ programs allowing estimate targets on the torus.

For one target: unetarget.c
For two targets: deuxtarget.c
For three targets: troistarget.c
For four targets: quatretarget.c

It should be noted that for reasons of memory we are intersting with a torus of size 150 for three targets and 25 for four targets.

Film MATLAB to be downloaded: We made several simulations to find targets. To be able to visualize films it is necessary to download the data and associated program MATLAB and to launch the program under MATLAB.

For one target in a torus of size 300: it is necessary to download the following file (txt file) and the MATLAB program unetarget.m.
For two targets in a torus of size 300: (txt file) and MATLAB program deuxtarget.m.
For three targets in a torus of size 150: (txt file) and MATLAB program troistarget.m.

Film look like the following picture for two targets, in blue the observations, in red the positions of the two targtes and in green the estimations of the two targets.

Organized by this web page: on January 22, 2002. If you have remarks or suggestions, you can contact me at the following address:
gentil «at» ceremade.dauphine.fr

Version française