Maghdi, H., Al-Sherbaz, A., Aljawad, N. and Lami, I. A. (2016) UNILS: Unconstrained Indoors Localization Scheme based on cooperative smartphones networking with onboard inertial, Bluetooth and GNSS devices. In: Proceedings of IEEE/ION PLANS 2016. Savannah, Georgia, USA: IEEE. 9781509020423. pp. 129-136.
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Abstract:
Location-based services (LBS) are becoming important services on today’s smartphones (SPs), tablets and wearable devices. Seamless outdoors-indoors navigation, and especially for accurate indoors localization, is the main demand of LBS users. Onboard WiFi, Bluetooth (BT) or inertialsensors technologies have been proven to somewhat provide alternative solutions in GNSS-signal-denied areas (i.e. indoors) to define SPs location. However, limited coverage of WiFi access-points (WAPs), pre-installed BT-anchors, constrained of WAPs/BT-anchors physical positions within a building, and limitations of existing localization techniques (in a standalone mode) on SPs are some of the main challenges to designing a spontaneous autonomous positioning solution with reliable accuracy at reasonable cost. This paper proposes an unconstrained indoors localization scheme (UNILS) based on cooperative SPs networking to tackle these challenges. The aim of this new scheme is to fuse multi-technologies measurements on SPs. The scheme uses relative-pseudoranging (based on time-of-arrival ‘TOA’ technique) approach between the connected SPs that are GNSS enabled, especially when the majority of the SPs are outdoors. Then the scheme combines this pseudoranges with uncertainty calculations from onboard
dead-reckoning (DR) measurements using Kalman Filter, that
can provide seamless and improve location accuracy
significantly, especially when deep indoors. This means, in deep indoors, UNILS can utilize only available devices/sensors on SPs, when communication with WAPs or BT-anchors is considered unreliable or unavailable, to offer reasonable cost & good localization performance. Results obtained from actual trials & simulations (using OPNET) of this scheme (based on Android-SPs network implementations for various indoors scenarios) show that around 3-meters accuracy can be achieved when locating SPs at various deep indoors situations.
Uncontrolled Keywords:
Fusing localization technologies, Bluetooth,
inertial sensor, GNSS, Indoors- Smartphone localization, TOA, DR
Subjects:
Creators:
Maghdi, H., Al-Sherbaz, A., Aljawad, N. and Lami, I. A.
Publisher:
IEEE
Northamptonshire and East Midlands:
ICT
Faculties, Divisions and Institutes:
Date:
10 April 2016
Date Type:
Publication
Page Range:
pp. 129-136
Title of Book:
Proceedings of IEEE/ION PLANS 2016
Event Title:
Institute of Electrical and Electronics Engineers/Institute of Navigation Position, Location And Navigation Symposium (IEEE/ION PLANS) 2016
Event Dates:
11-14 April 2016
Place of Publication:
Savannah, Georgia, USA
Event Location:
Savannah, Georgia, USA
Event Type:
Conference
Number of Pages:
8
Language:
English
ISBN:
9781509020423
Status:
Published / Disseminated
Refereed:
Yes
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