Fig. 1. Schematic of beam deflection by double prism

Fig. 2. The transformation relationship between the radial deviation angle and the included angle of the prism

Fig. 3. The influence of target motion on the rotation of the biprism during the tracking process

Fig. 4. Double prism compound tracking system

Fig. 5. Double prism tracking controller

Fig. 6. Compound tracking experimental system

Fig. 7. Angle control error of double prism

Fig. 8. Optical axis tracking error of the double prism system

Fig. 9. Compound tracking error of the double prism