IN-PIPE LOCALIZATION OF PIPELINE INSPECTION GADGETS

Systems and methods for localizing a traveling device in a pipeline include a traveling device comprising a plurality of electromagnetic sensors and an inertial measurement unit; acquiring a plurality of measurements from the inertial measurement unit; estimating a velocity and an orientation of the traveling device based on the plurality of measurements from the inertial measurement unit; acquiring a plurality of measurements from the plurality of electromagnetic sensors; detecting a plurality of landmarks of the pipeline based on the plurality of measurements from the plurality of electromagnetic sensors; calculating an average velocity of the traveling device based on the detected plurality of landmarks; and determining a location and an orientation of the traveling device based on the estimated velocity, the estimated orientation, and the calculated average velocity.