Position Estimation on a Grid, Based on Infrared Pattern Reception Features

The location of the position of a moving target on a grid plane is studied in this paper. The estimation method is based on encountering the number of infrared patterns that arrive to the target as expected, unexpected or out of order. Since the position of the target is not determined by an analog signal intensity, no high precision sensors and measurements are required and the coordinate estimation can be carried out by a pair of transmitters and a pair of sensors on the moving target. The speed of the estimation is adjustable according to the desired accuracy. An error of less than 5% can be reached in most of the covered area. The presented system can be used in a number of automation, robotics, virtual reality and ubiquitous applications.