MOVING DIRECTION DETERMINATION WITH NOISY SIGNALS FROM INERTIAL NAVIGATION SYSTEMS ON MOBILE DEVICES

摘要

Aspects of the present disclosure relate generally to indoor localization, forexample,where GPS or other localization signals are unavailable. More specifically,aspectsrelate to using inertial navigation systems such as accelerometers andgyroscopes toaid in the determination of the location of a user. Certain devices such asMEMSgyroscopes found in handheld client devices should be calibrated to ensureaccuratelocation information is obtained. In one aspect, a Vibration Energy Modelprocess isperformed on shaking energy generated as a user walks with a mobile device todetectthe direction the user is walking in. This information may be used as part ofa signalfusion system to perform accurate indoor localization of the user, such as toprovideenhanced maps and location services to the user.