Patent ID: 9733089
Date: 2017-08-15
CPC Classifications: G01C

Claim:
1. A method for primarily sensor-based navigation of a vehicle on a road surface, the method comprising: in a first time period, collecting geophysical position data using a GPS receiver of a navigation device; in the first time period, collecting a first set of accelerometer data using an accelerometer of the navigation device; analyzing the first set of accelerometer data to produce a first set of vertical vehicular motion data; wherein vertical vehicular motion data describes motion of the vehicle perpendicular the road surface; generating a mapping association between the first set of vertical vehicular motion data and the geophysical position data; in a second time period after the first time period, collecting a second set of accelerometer data using the accelerometer; analyzing the second set of accelerometer data to produce a second set of vertical vehicular motion data; and calculating an estimated location of the vehicle by analyzing the second set of vertical vehicular motion data in light of the mapping association.