DEVELOPMENT OF RECEIVERS TO CHARACTERIZE TRANSIT-TIME AND FREQUENCY SIGNALS

This article describes the development of electronic receivers used to obtain precise measurements of Transit satellite signals such as Dopp ler shift, satellite ephemeris, and timing information. These measurem ents were used to determine past and future orbits of the satellites a t fixed locations as well as navigation positions for receivers in sub marines and ships and at other sites in an Earth-fixed coordinate syst em. The measurements were based on the best available standards of tim e and frequency.