Effect of properties of a high-latitude earth-ionosphere waveguide channel on the group and phase delays of LF radio signals singly reflected from the ionosphere

An analysis is made of the dependence of the group and phase delays of an LF (approximately 100 kHz) radio signal singly reflected from the ionosphere on the distance between the receiver and the transmitter for a number of parameters of the high-latitude earth-ionosphere waveguide. The problem of eliminating the indeterminacy in the assessment of phase delay is examined.