High-precision optical telescopes for satellites tracking

In 2008-2011 I was with the Department of Electrical Engineering and Precision Electromechanical Systems, ITMO University (Saint-Petersburg, Russia), and participated in a project on control systems design and implementation for a series of high-precision optical telescopes. These telescopes are used in various applications, and satellites tracking is one of these tasks. Each telescope is equipped with a laser-based range sensor able to measure the distance from the telescope to a satellite, and the measurements from a network of telescopes are used, for example, for GLONASS navigation. To be able to measure the distance, the telescope must track the rotating satellite with a very small tracking error standard deviation. Such an accuracy is provided by the following triple: gearless electrical drives, high-precision optical encoders and control system. In this project, I was a member of the control system design team, and the systems I have designed are currently under exploitation, e.g. the telescope located at the Baikonur Cosmodrome, which you can see on the picture
The project results were also disseminated in public sector via several publications in general purpose journals and reports in TV news.

Here and here you can find more photos and information about the project (in Russian).