8Goldenberg F. Geomagnetic navigation beyond magnetic compass[A].{H}San Diego,California,.
9Kato N,Shigetomi T. Underwater navigation for long-range autonomous underwater vehicles using geomagnetic and bathymetric infor-mation[J].{H}ADVANCED ROBOTICS,2009,(07).
10Gautam Sharma,Isabelle A G Laureyns,Kartik B Ariyur. The use of natural signals for localization and navigation with application to centimeter sized UAVs[A].