Estimation of a Target Position Based on Infrared Pattern Reception Quality

A novel approach toward the indoor position localization of a mobile target is presented in this paper. It is based on the reception quality of infrared patterns that are sent by a small number of transmitters that are placed around the covered area. A pair of transmitters can cover an area of 15 m 2 that can be further -extended if more transmitters are used. No signal strength or time intervals have to be accurately measured leading to low-cost implementations. Result validation rules and error correcting methods are employed to improve the position estimation accuracy. Several alternative architecture approaches concerning the -infrared pattern structure are also presented in order to improve the estimation speed and the localization system robustness in noisy environments.