Fig. 1. Schematic diagram of entanglement ranging scheme

Fig. 2. Schematic diagram of hypothesis testing problems. (a) Hypothesis 1; (b) hypothesis h; (c) hypothesis m

Fig. 3. Relationship between entanglement ranging error probability and ranging accuracy

Fig. 4. Relationship between error probability performance of different ranging schemes and mode number M. (a) m=2, N_B=3; (b) m=3, N_B=1; (c) m=50, N_B=20