Effect of Fast Moving Object on RSSI in WSN: An Experimental Approach

TL;DR

This study experimentally examines how fast-moving objects like cars affect RSSI signals in wireless sensor networks, considering ground effects and antenna orientation, revealing patterns and irregularities in signal fluctuations.

Contribution

It provides empirical insights into RSSI behavior with moving objects, accounting for antenna orientation and ground effects, which was previously underexplored.

Findings

RSSI shows sequential fluctuation patterns at slow car speeds

Antenna orientation influences RSSI fluctuation irregularities

Ground effect impacts RSSI stability during object movement

Abstract

In this paper, we experimentally investigate the effect of fast moving object on the RSSI in the wireless sensor networks in presence of the ground effect and antenna orientation in elevation direction. In experimental setup, MICAz mote pair was placed on the ground, where one mote acts as a transmitter and the other as a receiver. The trans- mitter mote's antenna was oriented in elevation direction with respect to the receiver mote's antenna. The fast moving object i.e. car, was passed between the motes and the fluctuations in the RSSI are observed. The experimental results show some sequential pattern in RSSI fluctuations when car moves at some relatively slow speed. However, some irregu- larities were also observed when antenna was oriented at 45 and 90 in elevation direction.