An investigation into the use of very low frequency transmissions for ship navigation.
Abstract
The very low frequency band has been characterized by
its extremely reliable propagation since the early days of
radio. Recent development of oscillators accurate to a few
parts in lO-H have made it possible to navigate a ship accurately
by using existing VXF transmissions. One method of
such navigation is discussed. In particular, navigation over
long periods of time is explained, with corrections for diurnal
phase shift incorporated in the calculation of ships
position. Equipment used to obtain experimental data is
described and experimental results and sample calculations
are presented.