Technologies for Location Determination in Indoor and Urban Environments

Wednesday, November 14th, 2012 at 6:30 PM

TI Auditorium

Chair: M. P. Divakar
Organizer: M. P. Divakar

Session Abstract:GPS provides excellent location positioning service as long as the receiver has an unobstructed view of the sky. But because the GPS signal is very faint, it can't usually be received indoors, and is often obstructed in urban areas even when outdoors. This session looks at location positioning technologies for such 'GPS challenged' environments. Qualcomm's use of multiple sources of information and NextNav's solutions for accurate and carrier grade location service over a GPS-like channel will be described with test results provided to confirm its commercial viability.

Speaker: Subbu Meiyappan, NextNav

Bio: Subbu Meiyappan is a Co-founder and Vice President of Hardware Engineering at NextNav where he oversees the design, implementation, manufacturing of the NextNav beacons and reference receiver implementations. Subbu specializes in communication hardware system design. He has been involved with various aspects of hardware design and implementation for the last 16 years in the telecommunications and semiconductor industries. Prior to NextNav, Subbu was at Qualcomm, Airgo Networks, Cisco Systems, Philips Semiconductors and VLSI Technology, Inc. He has 15 issued patents and several patents pending. Subu has a MSEE from Stanford University and BS from Tennessee Technological University.

Title: Positioning Technologies for GPD-Challenged Locations

Abstract: This presentation will provide an overview of various location technologies for GPS challenged locations, especially indoors and obstructed line of sight urban areas. We'll also touch on the state of the art of these location technologies, the challenges they face, and highlights of NextNav's location solution. In particular, we will examine solutions for multi-path propagation in a terrestrial system designed for positioning as well as timing and synchronization across a wide area. Results from various tests across the entire network will be presented.

Speaker: Tom Wolf, NextNav

Bio: Tom Wolf is a Senior Director of Engineering at NextNav, where he oversees the Advanced Systems Group and focuses on high precision altitude technology. Tom has been involved in all aspects of the development of consumer navigation products. He has over 20 years of experience at companies such as Qualcomm, Snaptrack, Gyration, and Trimble. Tom has 8 issued patents and several patents pending. He has a PhD in EE from Stanford University, and BS and MS degrees from the University of Pennsylvania.<

Title: Accurate Attitute Techniques for Indoor Positioning

Abstract: While the 2D positioning is important in GPS challenged areas, GPS suffers from lack of precise altitude capabilities even in the presence of good satellite visibility. This primarily stems from dilution of precision (DOP) limitations.In this talk, we present a novel technique to determine altitude to floor level accuracy. This scheme was developed and enabled by use of reference weather stations in a wide area wireless network. It is to be used in conjunction with MEMS barometers found in most smartphones and tablets. Results from various tests across the network will be discussed.

Speaker: Ravi Palanki, Qualcomm

Bio: Ravi Palanki is a Senior Staff Engineer at Qualcomm Research Silicon Valley, where he leads a team of engineers working on indoor positioning algorithms. Prior to this, he worked on 4G wireless technologies and was responsible for the design and standardization of several key 4G LTE features. He has around 20 journal and conference papers, 200 granted or pending patents and research experience at the Jet Propulsion Laboratory (JPL) and Mitsubishi Electric Research Labs (MERL). Ravi holds a BTech in EE from IIT Madras and an MS and PhD in EE from Caltech.

Title: The Great Indoors: The Next Frontier in Location-Based Services

Abstract: Indoor positioning is an extremely challenging problem since traditional positioning systems such as GPS either fail completely indoors or fail to provide the desired level of accuracy. This talk will discuss multiple sources of information including radio measurements, sensor data and building maps that can be used to obtain precise indoor location on a smartphone.