Patent ID: 8629777
Filing Date: 2014-01-14
Classification: G01C,G01R

Abstract:
1. A method of installing an aftermarket magnetometer at a mobile craft, said method comprising: determining that a particular location on a mobile craft is substantially free of magnetic interference generated by the craft that would unduly interfere with operation of the aftermarket magnetometer; said determining including positioning a test magnetometer at a particular location of the mobile craft and sensing a magnetic field with said test magnetometer, said test magnetometer including at least one output indicating magnetic measurements made by said test magnetometer; connecting a computer to said test magnetometer, said computer programmed to monitor said at least one output; attempting to detect magnetic interference at the mobile craft with said test magnetometer while said craft remains substantially stationary; and providing a human perceptible indication if said at least one output of said test magnetometer changes by more than a specified amount.