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http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/122391| Title: | Precise Localisation of Archaeological Findings with a new Ultrasonic 3D Positioning Sensor |
| Keywords: | Ultrasound Trilateration Localisation Archaeology Wind Speed |
| Publisher: | Elsevier |
| Description: | This paper presents a new ultrasonic sensor for 3D co-ordinate estimation, which has been
especially designed to localize and sketch findings after they are extracted by archaeologists. Classical tasks at paleo-archaeological excavations are: measuring
position with metric tapes, drawing a sketch of found object, and introducing all information into a database manually; operations that are not efficient and prone to errors. The positioning system we have designed allows simultaneous characterization of several findings (absolute position, shape, size and orientation) using as a tool a wireless 2-metre-long rod, whose lower tip has to be placed on the object under study.
The system contains two ultrasonic emitters and employs the time-of-flight (TOF) the
ultrasonic signal takes to reach several fixed receivers, and a robust trilateration
algorithm to determine the position of the rod tip with 10 mm accuracy. Object position
and contour information are automatically transferred to a database in a central computer avoiding manual typewriting. Airflow is the main source of positioning error in outdoor environments, so a strategy based on a differential emitter fixed at a known position is used, which permits to cancel out the effects of uniform air motion. Fundación Atapuerca, y el Ministerio Ciencia y Tecnología Peer reviewed |
| URI: | http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/122391 |
| Other Identifiers: | Sensors and Actuators A, Vol. 123-124, pp. 224-233 10261/2890 10.1016/j.sna.2005.03.064 |
| Appears in Collections: | Digital Csic |
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