Booz Allen Hamilton Distinguished Colloquium Series - 04/18/2014 - Dr. Carole Teolis

"GPS Deinied Location and Mapping" The proliferation of smartphones and advances in the small, low cost sensors inside them are beginning to enable Apps that can provide location indoors for extended periods without GPS. However, providing accurate indoor location based on dead reckoning using the phone’s low quality sensors is challenging. Variations in how users carry their phones and even changes in carrying location during tracking, for example from taking a call, to texting, or simply carrying the phone in a pocket or purse adds more complexity because it changes the reference frame of the phone relative to the user. As a consequence, tracking accurately for any reasonable period of time requires aiding signals and sensors. Many of the available sensors such as a compass or Wi-Fi offer poor quality aiding indoors. In this talk I will highlight some of the approaches companies are taking to solve the problem of obtaining accurate indoor location and the difficult problems that remain. I will review the work that TRX Systems has done in the area of tracking and mapping.