Showing papers on "Clock synchronization published in 1977"
TL;DR: In this article, the role of convention in various definitions of clock synchronization and simultaneity is investigated, and two principal methods of synchronization can be considered: system internal and system external synchronization.
Abstract: The role of convention in various definitions of clock synchronization and simultaneity is investigated. We show that two principal methods of synchronization can be considered: system internal and system external synchronization. Synchronization by the Einstein procedure and by slow clock transport turn out to be equivalent if and only if the time dilatation factor is given by the Einstein result (1−v
2)1/2. An ether theory is constructed that maintains absolute simultaneity and is kinematically equivalent to special relativity.
404 citations
01 Nov 1977
TL;DR: Atomic clocks at widely separated sites can be synchronized to within several nanoseconds from a few minutes of very-long-baseline interferometry (VLBI) observations, and to within one nano-condcond from several hours of such observations as mentioned in this paper.
Abstract: Atomic clocks at widely separated sites can be synchronized to within several nanoseconds from a few minutes of very-long-baseline interferometry (VLBI) observations, and to within one nanosecond from several hours of such observations.
8 citations
01 Jun 1977
4 citations
15 Feb 1977
TL;DR: A wideband digital data acquisition system has been developed to measure the clock offsets to the 10ns accuracy required to facilitate three-way spacecraft ranging, to monitor the hydrogen maser frequency standard rates to 1 part in 10 to the forteenth power and to potentially reduce operational costs by replacing the current DSN operational time sync system.
Abstract: A wideband digital data acquisition system has been developed to measure the clock offsets to the 10-ns accuracy required to facilitate three-way spacecraft ranging, to monitor the hydrogen maser frequency standard rates to 1 part in 10 to the forteenth power and to potentially reduce operational costs by replacing the current DSN operational time sync system.
2 citations
TL;DR: In this paper, the National Physical Laboratory, New Delhi proposes to exploit television network to disseminate standard time and frequency to the users all over the country at nominal cost, which is already in use in several other advanced countries.
Abstract: Television transmission offers an inexpensive time synchronization method. In precision and accuracy, television synchronization is one of the most reliable systems. It enables time synchronization to the order of sub microsecond. The National Physical Laboratory, New Delhi proposes to exploit television network to disseminate standard time and frequency to the users all over the country at nominal cost. This technique is already in use in several other advanced countries.
1 citations
01 Jan 1977