Fig. 1. Electrical function structure diagram of UAV positioning system

Fig. 2. Electromagnetic topology model of UAV positioning system

Fig. 3. CST simulation model of receiving antenna in positioning system

Fig. 4. S₁₁ parameter of receiving antenna of positioning system

Fig. 5. Simulation model of the EMI effect of PCB coupling path

Fig. 6. PCB coupled voltage variation of key points in the PCB circuit

Fig. 7. Positioning system cable CST simulation model

Fig. 8. Cable model of positioning system in CST simulation

Fig. 9. Equivalent test system of RFI for UAV positioning system

Fig. 10. RFI experimental equipment for UAV positioning system

Fig. 11. Failure frequency distribution of UAV positioning system

Fig. 12. Random failure caused by accidental events

Fig. 13. Schematic diagram of three typical failures for UAV positioning system