Comparison of Time Scales by Common View Method Based on the Measurements Taken by GLONASS Unmanned Spacecraft and Taking into Account Integer Property of Phase Ambiguities

2017 ◽  
Vol 25 (4) ◽  
pp. 95-107
Author(s):  
I. Skakun ◽  
◽  
V. Mitrikas ◽  
Keyword(s):  
Time Scales ◽  
Common View ◽  
Comparison Of Time Scales ◽  
Unmanned Spacecraft

scholarly journals Fast Comparison of High-Precision Time Scales Using GNSS Receivers

2017 ◽  
Vol 2017 ◽  
pp. 1-4
Author(s):  
Vojtech Vigner ◽  
Jaroslav Roztocil
Keyword(s):  
Time Scales ◽  
Time Scale ◽  
High Performance ◽  
Data Format ◽  
Common View ◽  
Log Files ◽  
Gnss Receivers ◽  
Precision Time ◽  
The Common ◽  
The Difference

Comparison of high-performance time scales generated by atomic clocks in laboratories of time and frequency metrology is usually performed by means of the Common View method. Laboratories are equipped with specialized GNSS receivers which measure the difference between a local time scale and a time scale of the selected satellite. Every receiver generates log files in CGGTTS data format to record measured differences. In order to calculate time differences recorded by two receivers, it is necessary to obtain these logs from both receivers and process them. This paper deals with automation and speeding up of these processes.

Using signals of satellite radio navigation systems for comparison of time scales

2001 ◽  
Vol 7 (4) ◽  
pp. 77-82
Author(s):  
H.S. Sydorenko ◽  
◽  
V.S. Solovyov ◽  
A.A. Tkachuk ◽  
O.S. Kleyman ◽  
...  
Keyword(s):  
Time Scales ◽  
Navigation Systems ◽  
Radio Navigation ◽  
Comparison Of Time Scales

Transmission of Timing Sensitive Information Using Photonic Services

2013 ◽  
Vol 321-324 ◽  
pp. 2343-2347
Author(s):  
Josef Vojtech ◽  
Vladimir Smotlacha ◽  
Pavel Skoda
Keyword(s):  
Time Scales ◽  
Data Transmission ◽  
Optical Network ◽  
Network Services ◽  
Sensitive Information ◽  
Photonic Networks ◽  
Transmission Of Information ◽  
New Type ◽  
Comparison Of Time Scales ◽  
Stable Transmission

Present optical network can allow very stable transmission of information. Photonic services represent a new type of multi-domain, end-to-end network services, besides traditional data transmission enables also real-time and non-data transmission over photonic networks. We proved the concept of photonic services on a specialized metrology application - comparison of time scales, where time scales are compared over distance of 1100km.

LVSEM: Past Present and Future

1990 ◽  
Vol 48 (1) ◽  
pp. 364-365
Author(s):  
James B. Pawley
Keyword(s):  
Field Emission ◽  
Line Width ◽  
Time Scales ◽  
Silicon Oxide ◽  
Beam Current ◽  
High Brightness ◽  
High Beam ◽  
Fixed Charges ◽  
Beam Voltage ◽  
Deposited Metal

Past: In 1960 Thornley published the first description of SEM studies carried out at low beam voltage (LVSEM, 1-5 kV). The aim was to reduce charging on insulators but increased contrast and difficulties with low beam current and frozen biological specimens were also noted. These disadvantages prevented widespread use of LVSEM except by a few enthusiasts such as Boyde. An exception was its use in connection with studies in which biological specimens were dissected in the SEM as this process destroyed the conducting films and produced charging unless LVSEM was used.In the 1980’s field emission (FE) SEM’s came into more common use. The high brightness and smaller energy spread characteristic of the FE-SEM’s greatly reduced the practical resolution penalty associated with LVSEM and the number of investigators taking advantage of the technique rapidly expanded; led by those studying semiconductors. In semiconductor research, the SEM is used to measure the line-width of the deposited metal conductors and of the features of the photo-resist used to form them. In addition, the SEM is used to measure the surface potentials of operating circuits with sub-micrometer resolution and on pico-second time scales. Because high beam voltages destroy semiconductors by injecting fixed charges into silicon oxide insulators, these studies must be performed using LVSEM where the beam does not penetrate so far.

Articulatory Generalization in Two Word-Medial, Ambisyllabic Contexts

1988 ◽  
Vol 19 (3) ◽  
pp. 251-258 ◽  
Author(s):  
Virginia I. Wolfe ◽  
Suzanne D. Blocker ◽  
Norma J. Prater
Keyword(s):  
Common View ◽  
Perceptual Salience ◽  
The Common ◽  
Unitary Concept ◽  
Over Time

Articulatory generalization of velar cognates /k/, /g/ in two phonologically disordered children was studied over time as a function of sequential word-morpheme position training. Although patterns of contextual acquisition differed, correct responses to the word-medial, inflected context (e.g., "picking," "hugging") occurred earlier and exceeded those to the word-medial, noninflected context (e.g., "bacon," "wagon"). This finding indicates that the common view of the word-medial position as a unitary concept is an oversimplification. Possible explanations for superior generalization to the word-medial, inflected position are discussed in terms of coarticulation, perceptual salience, and the representational integrity of the word.

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