DL Seminar Talk on: “Indoor navigation – using WiFi access points and time of flight of electromagnetic signals.”

Abstract

Being able to accurately locate one’s position indoors has several useful applications, such as guiding one to a lecture hall in an unfamiliar building — particularly when it is not a building based on a simple rectangular design. GPS signals do not penetrate structures well and in any case do not provide the accuracy needed for application such as locating a person using a cell phone for a 911 call. A new protocol for WiFi, IEEE 802.11mc, provides for round-trip time measurement with nanosecond resolution. Knowing the position of several access points and the distance to them should provide all the information needed to solve for the position of the user. But the problem is more interesting than that, since round-trip time can be considerably longer than expected due to the high relative permittivity of typical building materials. We’ll discuss this and related issues, such as good placement of access points for low “dilution of accuracy”.  The method will be demonstrated using an app for an Android phone and a few Wifi access points located in the lecture hall.

Speaker(s): Professor Berthold K.P. Horn from MIT EECS and CSAIL.,

Agenda:

 Seminar on Tuesday Feb 26, 2019 from 6:30 PM to 8:00 PM

Holmes Hall room 389, UH Manoa Campus

Pizza and beverages starting at 6:00 PM

RSVP for pizza headcount to ekishore@ieee.org

Location:
Room: H389
Bldg: Holmes Hall
2540 Dole Street
Honolulu, Hawaii
96822