Home // SENSORCOMM 2018, The Twelfth International Conference on Sensor Technologies and Applications // View article
Authors:
Paulo Santos
Paulo Felisberto
Sérgio Jesus
Friedrich Zabel
Aníbal Matos
Keywords: Azimuth angle estimation; Vector Sensor signal processing; Intensity based method, Pressure and particle velocity combination
Abstract:
During decades, the direction of arrival estimation, in terms of azimuth and elevation angles, have been obtained using the pressure acquired with hydrophones or arrays of hydrophones. More recently, the particle velocity information became important in this research area, since the left/right ambiguity can be canceled when Vector Sensors (VS) or VS Arrays (VSA) are used, due to their high spatial directivity. The main objective of this paper is to estimate azimuth angles using a prototype called Dual Accelerometer Vector Sensor (DAVS) with active and passive underwater signals. The DAVS consists of a pressure sensor and two tri-axial accelerometers arranged in a compact unit. The advantage of this equipment is its portability and autonomy. Therefore, it can be easily deployed or embarked in a moving platform. The experimental data results presented in this paper were obtained during the REX'17 experiment where: 1) the DAVS was mounted in an AUV for azimuth angles estimation using active signals and 2) the DAVS was moored in a fixed position collecting passive signals from sources of opportunity. The azimuth estimation results are stable during time, for both active and passive signals, leading to the conclusion that this compact device may be used for platforms self-localization and in operations involving target detection.
Pages: 15 to 20
Copyright: Copyright (c) IARIA, 2018
Publication date: September 16, 2018
Published in: conference
ISSN: 2308-4405
ISBN: 978-1-61208-659-0
Location: Venice, Italy
Dates: from September 16, 2018 to September 20, 2018