Straight-line geomagnetic matching for underwater base on ICCP

Geomagnetism Navigation can be used to limit error accumulation of the Inertial Navigation System.Consider the magnetism change of submarine which can not supply enough information after turning,a new notion was proposed which pointed out that submarine should keep course when using geomagetic matching.A new algorithm was given which gained the initialization measure data by Inertial Navigation System position,and got others position all by calculation which based on navigation information.This method can not only ensure the precision and continuity of measurements,and can also solve the problem of bizarrerie data.The notion has referenced value at the use of geomagnetic matching of the submarine.