RFID-based butterfly location sensing system

In this paper, we describe the implementation of an RFID-based location sensing system which is intended for monitoring the movement and activity of butterflies for biological research purposes. We present the design and characteristics of the developed RFID tags, the antenna and system configuration, as well as the non-linear Kalman filtering and smoothing based tracking algorithm. We also present experimental results obtained in an anechoic chamber as well as in field test environment.