Design approaches for acquisition and tracking for a narrow-beam cooperative space laser communications transmitter and receiver are presented. Rationale for selection of key components and system test data are given which demonstrate acquisition in less than 6.0 seconds and tracking with less than 0.6 µrad error.
John D. Wolf, John D. Wolf,
"Precision Pointing & Tracking System For Space Laser Communications", Proc. SPIE 0150, Laser and Fiber Optics Communications, (21 December 1978); doi: 10.1117/12.956693; https://doi.org/10.1117/12.956693