Newton-Raphson method for accuracy enhancement of electro-optical targeting system

A Newton-Raphson algorithm for optimising dimension parameters of the electrooptical targeting system (EOTS) is proposed. The spatial parameters are critical to the accuracy of position measurement in the targeting system. To calibrate EOTS, the Newton-Raphson iteration method is used to enhance the system accuracy. This algorithm is based on four tested points where each point is required to be located in four different quadrants in the target area. The Newton-Raphson iteration method minimises the difference between the calculated and the measured values obtained from any of two tested locations. This algorithm enhances the system accuracy up to ±1 mm within a 1 m×1 m targeting area