Fig. 1. Tracking acceleration and speed of two axies

Fig. 2. Overall structure of tracking mount

Fig. 3. Structure form of double-row ball rotary table bearing

Fig. 4. Curves of frictional torque experiments for bearings

Fig. 5. Static deformation results of spring model

Fig. 6. The first-three order modal results

Fig. 7. Schematic diagram of axis wobble accuracy test

Fig. 8. Axis wobble accuracy test device

Fig. 9. Wobble error curves after harmonic analysis

Fig. 10. Remote sensing images received by laser communication system