Fig. 1. Approaching entanglement exchange principle at both ends

Fig. 2. Entanglement exchange transmission process at both ends

Fig. 3. Approximation switching logic circuit diagram at both ends

Fig. 4. Relationship between transmission time of quantum information and number of nodes

Fig. 5. Quantum satellite network with dandelion spherical structure

Fig. 6. Virtual coordinate map of satellite network

Fig. 7. Flowchart of routing protocol discovery

Fig. 8. Quantum routing request messages

Fig. 9. Quantum routing reply message

Fig. 10. Channel establishment rate of quantum satellite routing

Fig. 11. Routing overhead of quantum satellite network