Signal design for time dissemination, some aspects.
J.L. Jespersen · 1967
The purpose of this paper is to discuss, in a general way, some problems of time signal dissemination in a noisy environment.Most of the paper applies to any timing system, but particular emphasis is given to a CW two-frequency system.This is done for two reasons: first, as will be shown, a two-frequency CW system evolves naturally from fundamental considerations to meet certain user requirements; and second, a two-frequency VLF system is being investigated experimentally at the present time.