Quality data and network continuity are two important considerations in determining the success of wireless sensor network (WSN) motes deployment in agriculture. Nevertheless, these two factors are closely related to the behavior of antenna position and orientation during deployment which has often been ignored. Although extensive research has been done on antenna heights and characteristics, very few looked into potential antenna misplaced during deployment. This paper presents a study on effect of antenna heights and orientation to wireless sensor network signal power variation. The results showed that although the antenna height affects the signal strength significantly, as long as the transmitter and receiver are higher than the far field distance of the antenna, the power loss is insignificant. On the other hand, misplaced antenna radiating towards receiver in the absence of front lobe, may cause critical data loss and network continuity. The study also showed that Logdistance model is a better fit to signal loss profile in agricultural field compared to Free Space Loss model.
|Number of pages||6|
|Journal||Australian Journal of Basic and Applied Sciences|
|Publication status||Published - 2013|