[Retracted] Design and Application of Electromechanical Control System Based on Computer Fault Tolerance Technology

Figure 5

Waveform diagram. (a) Comparison of path loss under horizontal polarization, wood ground, R = −1, free space. (b) Comparison of path loss under vertical polarization, wood ground, R = −1, free space. (c) Comparison of path loss under PVC ceiling, R = −1, free space (horizontal). (d) Comparison of path loss under PVC ceiling, R = −1, free space (vertical).

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