Accuracy validation of T2L2 time transfer in co-location
Summary
The Time Transfer by Laser Link (T2L2) experiment achieved sub-200 picosecond accuracy in synchronizing remote clocks. This validates T2L2
Area of Science:
- * Physics
- * Metrology
- * Space Science
Background:
- * The Time Transfer by Laser Link (T2L2) experiment aims to synchronize ultra-stable clocks over large distances.
- * It utilizes ground-to-space laser telemetry technology with specialized satellite equipment.
Purpose of the Study:
- * To demonstrate and validate the T2L2 time transfer accuracy.
- * To compare T2L2 performance against GPS and direct measurement techniques.
- * To validate the T2L2 experiment's uncertainty budget.
Main Methods:
- * A 2-week co-location campaign in April 2012 using two laser ranging stations.
- * Comparison of T2L2, GPS, and direct measurement time transfer techniques.
- * Utilized an event timer and an interval counter for precise measurements.
Main Results:
- * Achieved a mean agreement between T2L2 and direct comparison better than 200 picoseconds.
- * Demonstrated the high accuracy of the T2L2 time transfer method.
Conclusions:
- * The campaign successfully validated T2L2's performance in time transfer accuracy.
- * The results represent a significant step towards validating the overall T2L2 experiment's uncertainty budget.
More Related Videos
08:42Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
Published on: September 3, 2021
3.7K
11:09RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans
Published on: July 17, 2021
3.5K
Related Concept Videos
01:18Distance Measurements by Taping
657
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
657
02:07Improving Translational Accuracy
15.7K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
15.7K
02:07Improving Translational Accuracy
3.8K
3.8K
01:20Region of Convergence of Laplace Tarnsform
1.4K
The Region of Convergence (ROC) is a fundamental concept in signal processing and system analysis, particularly associated with the Laplace transform. The ROC represents an area in the complex plane where the Laplace transform of a given signal converges, determining the transform's applicability and utility.
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This...
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This...
1.4K
01:15Distance Corrections
400
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
400
01:21Linear Approximation in Time Domain
427
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
427