The dynamic Allan Variance IV: characterization of atomic clock anomalies

2015 ◽  
Vol 62 (5) ◽  
pp. 791-801 ◽  
Author(s):  
Lorenzo Galleani ◽  
Patrizia Tavella
Keyword(s):  
Atomic Clock ◽  
Allan Variance

CHARACTERIZATION OF NONSTATIONARY ATOMIC CLOCKS

2007 ◽  
Vol 07 (04) ◽  
pp. L461-L471 ◽  
Author(s):  
LORENZO GALLEANI ◽  
PATRIZIA TAVELLA
Keyword(s):  
Navigation System ◽  
Atomic Clock ◽  
Allan Variance ◽  
Atomic Clocks ◽  
Time Varying ◽  
The Core ◽  
The Stability ◽  
Very High

Atomic clocks are the core of a navigation system. Since an error in time results in an error in the user localization, it is fundamental that the stability is very high and constant with time. In this paper we discuss the dynamic Allan variance, or DAVAR, a representation of the time-varying stability of an atomic clock. We show by simulation its effectiveness in tracking common nonstationary behaviors of a clock.

scholarly journals Characterization of error sources in an inertial unit using Allan variance and nonlinear parameter adjustment

2020 ◽  
Vol 1674 ◽  
pp. 012004
Author(s):  
W A Hernandez ◽  
J S Castillo-Corredor ◽  
J A Ramos-Cifuentes ◽  
F Fuentes ◽  
L F Castañeda
Keyword(s):  
Allan Variance ◽  
Nonlinear Parameter ◽  
Error Sources ◽  
Parameter Adjustment ◽  
Inertial Unit

scholarly journals Characterization of Received Signal Strength Perturbations Using Allan Variance

2018 ◽  
Vol 54 (2) ◽  
pp. 873-889 ◽  
Author(s):  
Chunbo Luo ◽  
Pablo Casaseca-de-la-Higuera ◽  
Sally McClean ◽  
Gerard Parr ◽  
Peng Ren
Keyword(s):  
Signal Strength ◽  
Received Signal Strength ◽  
Allan Variance

scholarly journals The Brazilian time and frequency atomic standards program

2008 ◽  
Vol 80 (2) ◽  
pp. 217-252 ◽  
Author(s):  
Mushtaq Ahmed ◽  
Daniel V. Magalhães ◽  
Aida Bebeachibuli ◽  
Stella T. Müller ◽  
Renato F. Alves ◽  
...  
Keyword(s):  
Atomic Beam ◽  
Atomic Clock ◽  
Cold Atom ◽  
Telecommunication Networks ◽  
Atomic Clocks ◽  
Major Advance ◽  
Optical Cooling ◽  
Global Positioning ◽  
Frequency Metrology

Cesium atomic beam clocks have been the workhorse for many demanding applications in science and technology for the past four decades. Tests of the fundamental laws of physics and the search for minute changes in fundamental constants, the synchronization of telecommunication networks, and realization of the satellite-based global positioning system would not be possible without atomic clocks. The adoption of optical cooling and trapping techniques, has produced a major advance in atomic clock precision. Cold-atom fountain and compact cold-atom clocks have also been developed. Measurement precision of a few parts in 10(15) has been demonstrated for a cold-atom fountain clock. We present here an overview of the time and frequency metrology program based on cesium atoms under development at USP São Carlos. This activity consists of construction and characterization of atomic-beam, and several variations of cold-atom clocks. We discuss the basic working principles, construction, evaluation, and important applications of atomic clocks in the Brazilian program.

Characterization of digitizer timebase jitter by means of the Allan variance

2003 ◽  
Vol 25 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Pasquale Arpaia ◽  
Pasquale Daponte ◽  
Sergio Rapuano
Keyword(s):  
Allan Variance
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