Fig. 1. Two categories of RBU modules

Fig. 2. Basicblock (a) and Bottleneck (b)

Fig. 3. Schematic diagram of ResNet-18 network structure

Fig. 4. Non-local module calculation flow chart

Fig. 5. Two basic types of modules for NLO-ResNet: NLRBU-Iden (a) and NLRBU-Conv (b)

Fig. 6. Schematic diagram of NLO-ResNet network structure

Fig. 7. Typical schematic of CIR data under LOS and NLOS propagation conditions

Fig. 8. Schematic of the variation of the network performance with the dimensionality of the input CIR data

Fig. 9. Comparison of the basic modules of CNN (a), ResNet (b), and NLO-ResNet (c)

Fig. 10. Variation of the loss function on the test sets

Fig. 11. Comparison chart of predicted range error and actual range error