Development of the optical laser system for the testing and checking equipment for the transmitting and receiving terminals of the space optical communication line

摘要

Development of the high-speed and reliable space laser communication systems is of current interest for the space instrumentation. Thus, it is necessary to test working characteristics of the terminals on the ground during adjustment and verification. The goal of the work is to develop the control and verification equipment (CVE) intended for the laboratory testing of the space optical communication line (SOCL) and to prove the ability of performing of precision angular measurements in presence of the atmosphere. CVE consists of two blocks, the first block should form the ideal plane wavefront of the 250 mm diameter, the nonuniformity of the intensity along the diameter is not greater than 40%. The laser sources with the wavelength of 1,53 and 1.57 microns are used. The second part of the system forms the reference point and at the same time the light spot on the detector matrix to control the accuracy of the guiding. To check out of the CVE system the working model was created. The main algorithms of the adjustment and self-test were tested. The statistical characteristics of the laser beam with the diameter of 50 – 200 mm passed through the 40-m air layer in enclosed laboratory conditions were measured. With the results obtained the conclusions of the ability of the complex tests of the SOCL apparatus in the laboratory conditions were made.