Method and system for monitoring a parameter of a parabolic reflector

摘要

The invention relates to a method and a system for monitoring a parameter of a parabolic reflector (15), wherein the method comprising, directing at least one light beam onto at least a portion of a surface of the parabolic reflector (15) such that the reflected at least one light beam (35) is directed beyond a focus of the parabolic reflector (15), detecting the reflected at least one light beam (35) at a location beyond the focus of the parabolic reflector (15), determining an intensity of the detected at least one light beam, and comparing the intensity with a reference intensity to estimate the parameter of the parabolic reflector (15).