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October 25, 2012

Mtg: Technologies for Location Determination in Indoor and Urban Environments

by @ 12:13 pm. Filed under ALL, Communications, Electronics Design, Semiconductors

WEDNESDAY November 14, 2012
SCV Communications Chapter
Speakers: Subbu Meiyappan, Co-founder & VP Engineering, and Tom Wolf Ph.D., Senior Director of Engineering, NextNav, LLC
Time: Networking and food at 6:30 PM, Presentations at 7:00 PM
Cost: $5 for food
Place: Texas Instruments Building E, 2900 Semiconductor Dr., Santa Clara
RSVP: from the website

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 canĂ¢??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.? 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.
Two talks will be followed by a panel session with audience Q and A.
Positioning Technologies for GPS Challenged Locations, by Subbu Meiyappan
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.
Accurate Altitude Techniques for Indoor Positioning, by Tom Wolf Ph.D.
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.

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