Fig.1

Typical transmission cable inside an unmanned aerial vehicle"

Table 1

Typical cable parameters for unmanned aerial vehicle"

Fig.2

Three-dimensional simulation model of unmanned aerial vehicle"

Fig.3

Time domain waveform and spectral distribution of Gaussian pulse excitation"

Fig.4

Plane wave irradiation schematic diagram of unmanned aerial vehicle"

Fig.5

Peak voltage of cables coupling for different irradiation scenarios （without electromagnetic shielding）"

Fig.6

Peak voltage of cables coupling for different irradiation scenarios （with electromagnetic shielding）"

Fig.7

Irradiation effect experiment configuration diagram of unmanned aerial vehicle"

Fig.8

Schematic diagram of the relationship between interference signal and working signal"

Table 2

Classification of unmanned aerial vehicle effect phenomenon"

Fig.9

Chaning curves of loss-of-lock threshold with interference frequency offset when image transnission frame is lost"

Table 3

Minimum loss-of-lock threshold statistics with low bandwidth suppression ratio V/m"

Fig.10

Electromagnetic protection reinforcement scheme for unmanned aerial vehicle"

Fig.11

UAV shell sprayed with metal conductive paint"

Fig.12

Sensitive circuit covering metal copper foil"

Fig.13

Brushless motor with metal mesh"

Fig.14

Bare cable wrapped with conductive tape"

Fig.15

Three-strand filter design of brushless motor"

Fig.16

Changing curves of loss-of-lock threshold with interference frequency offset when image transmission frame is lost before and after protection and reinforcement"

Table 4

Statistics of lock-of-loss threshold before and after protection and reinforcement （?5 MHz $ \leqslant $Δf$ \leqslant $10 MHz） V/m"