Fig. 1. Optical remote sensing image positioning process based on lightweight vector control library

Fig. 2. Vector net extraction

Fig. 3. Stochastic wandering vector structure. (a) Random walk vector initial state; (b) random walk vector termination state

Fig. 4. Schematic diagram of transfer probability calculation. (a) Transition probability is greater than 1; (b) transition probability is 0

Fig. 5. Schematic diagram of candidate point search. (a) Distribution of matching objects in the selected region when the search radius is large; (b) distribution of matching objects in the candidate region with a small search radius; (c) schematic diagram of direct matching; (d) schematic diagram of matching after translation of hierarchical matching strategy

Fig. 6. Visualisation of the random wandering vector. (a) Area 1; (b) local details of area 1; (c) area 2; (d) area 3

Fig. 7. Statistics of the number of nodes

Fig. 8. Vector structure matching diagrams. (a) Area 1; (b) local details of area 1; (c) area 2; (d) area 3

Fig. 9. Comparison of Gaofen-2 positioning results in Kaifeng region of Henan Province

Fig. 10. Comparison of Jilin-1 positioning results in the Juarez region, USA

Fig. 11. Comparison of Jilin-1 positioning results for the Oklahoma City region, USA