1. 1) https:///www8.cao.go.jp//space//plan//keikaku.html
2. 2) https://www.sstl.co.uk/
3. 3) https://www.starlink.com/
4. 10) A. Berta et al.: Development of a commercial line of high-performance, fast-steering mirrors, Proc. SPIE, 3787 (1999) 181-192.
5. 11) M. Hafez et al.: Design, simulations and experimental investigations of a compact single mirror tip//tilt laser scanner, Mechatronics, 10, 7 (2000) 741-760.