Abstract
For the growth environment management of agricultural crops, our objective is to invent a high-accuracy position detection method using the information and communication technology. In this paper, our detection target objects are potted roses in the outdoor plane of about 20m x 10m. Each pot is arranged to about 50cm apart and has a semi-passive RFID tag. All pots are covered by a long range RFID system which has at least two reader antennae. The reader antenna which is designed to rotate around vertical axis can precisely detect the angle of arrival of each tag. So, the tag position is calculated with the crossing point of angles from two antennae. Thus, with two scanning antennae, 25cm-accuracy position detection was achieved.
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