Patent ID: 6097522
Filing Date: 2000-08-01
Classification: H04B

Abstract:
A method for aligning an optical transmission and reception beam in satellite connections, each having angular values, for the purpose of establishing and maintaining a connection between two satellite or partner terminals, each of which has at least one telescope for optical communication, comprising the steps ofsubjecting the angular value of the transmitted and received beams to a coarse alignment in such a way that a coarse adjustment angle is generated by the coarse alignment and acts on a first summing arrangement, from which an error angle results, which represents the corrected received signal;generating a lead correction angle from a lead correction unit;having said coarse adjustment angle act on a second summing arrangement, so that the output value contains a correction of the transmitted beam;detecting said error angle in an error detection device, from which a detection error signal is derived;linking this detection error signal with a control value in such a way that this linkage is performed with the aid of an additional summing arrangement whose output value acts on the lead correction device, and wherein the control value is a lead correction value;having said detection error signal act as a fine adjustment angle via a fine alignment device on said second summing arrangement on which said lead correction angle or said coarse adjustment angle also act as a control value, and wherein said fine adjustment angle simultaneously also acts on the first summing arrangement; and,iteratively achieving the alignment and maintenance of the connection by means of the values determined in this manner.