Efficient Data Collection in UAV-Assisted Cluster-Based Wireless Sensor Networks for 3D Environment: Optimization Study

<div>The lifetime of UAV-WSN system with path loss model based on <i>mmWave</i> operating at 5.7 GHz. The results show the system lifetime at different UAV altitudes considering the two cases of UAV placement: (1) <i>efficient</i> from optimization and (2) <i>centered</i> at the surveillance region.</div>

Journal of Sensors

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Figure 10

Figure 10: Efficient Data Collection in UAV-Assisted Cluster-Based Wireless Sensor Networks for 3D Environment: Optimization Study 