Most of intersatellite links use APD 4 quadrant tracking systems. This presentation shows that CCD Arrays can be used not only for acquisition but also for tracking with improved pointing accuracy. High frequency image repetition rate up to 8,000 Hz is possible with commercialy avalaible components. Experimental verifications performed in CNES Laboratories are described.
"Use Of CCD Arrays For Optical Link Acquisition And Tracking", Proc. SPIE 0810, Optical Systems for Space Applications, (18 September 1987); doi: 10.1117/12.941545; https://doi.org/10.1117/12.941545