Additional Secondary Factors (ASF)
The effects on Loran signals of passing over land – can be used to correct errors in ranges and position caused by these landpath effects.
Source: Nick Ward, IALA e-Nav committee vicechair, March 2009
The effects on Loran signals of passing over land – can be used to correct errors in ranges and position caused by these landpath effects.
Source: Nick Ward, IALA e-Nav committee vicechair, March 2009
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM