Optical atomic clocks

AD Ludlow, MM Boyd, J Ye, E Peik, PO Schmidt - Reviews of Modern Physics, 2015 - APS
Optical atomic clocks represent the state of the art in the frontier of modern measurement
science. In this article a detailed review on the development of optical atomic clocks that are …

Cold atom clocks and their applications in precision measurements

SY Dai, FS Zheng, K Liu, WL Chen, YG Lin… - Chinese …, 2021 - iopscience.iop.org
Cold atom clocks have made remarkable progresses in the last two decades and played
critical roles in precision measurements. Primary Cs fountain frequency standards have …

Positioning and velocity performance levels for a Lunar Lander using a dedicated Lunar Communication and Navigation System

A Grenier, P Giordano, L Bucci, A Cropp… - … : Journal of the Institute …, 2022 - navi.ion.org
The interest in Moon exploration has grown substantially in the last few years, appointing the
Moon as the first step toward deep space exploration. However, the current state-of-the-art …

Imaging analysis and first results of the geostationary interferometric microwave sounder demonstrator

C Zhang, H Liu, J Wu, S Zhang, J Yan… - … on Geoscience and …, 2014 - ieeexplore.ieee.org
The Geostationary Interferometric Microwave Sounder (GIMS) is a new concept of
atmospheric microwave sounder for China's future geostationary Earth orbit meteorological …

A 500-km cascaded white rabbit link for high-performance frequency dissemination

N Kaur, F Frank, J Pinto, P Tuckey… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
We perform experiments exploring the use of white rabbit precision time protocol (WR-PTP)
for time and frequency dissemination over long-distance optical fiber links. We use …

Time biases in laser ranging observations: a concerning issue of space geodesy

P Exertier, A Belli, JM Lemoine - Advances in Space Research, 2017 - Elsevier
Abstract Time transfer by Laser Ranging (LR) recently demonstrated a remarkable stability
(a few ps over∼ 1000 s) and accuracy (< 1 ns) in synchronizing both space and ground …

First two-way laser ranging to a lunar orbiter: infrared observations from the Grasse station to LRO's retro-reflector array

E Mazarico, X Sun, JM Torre, C Courde, J Chabé… - Earth, Planets and …, 2020 - Springer
We present the results of the first series of successful two-way laser ranging experiments
from a ground station, the Lunar Laser Ranging (LLR) station in Grasse, France, to a …

Optical Frequency Transfer on the Order of 10−19 Fractional Frequency Instability over a 64 m Free-Space Link

G Wang, Z Lu, X Liang, K He, Y He, X Ji - Photonics, 2024 - mdpi.com
High-precision time–frequency is widely used in time measurement, satellite navigation,
scientific research, and other fields. With the rapid development of optical clock technology …

Temperature, radiation and aging analysis of the DORIS Ultra Stable Oscillator by means of the Time Transfer by Laser Link experiment on Jason-2

A Belli, P Exertier, E Samain, C Courde… - Advances in Space …, 2016 - Elsevier
Abstract The Time Transfer by Laser Link (T2L2) experiment on-board the Jason-2 satellite
was launched in June 2008 at 1335 km altitude. It has been designed to use the Satellite …

Analysis of one-way laser ranging data to LRO, time transfer and clock characterization

S Bauer, H Hussmann, J Oberst, D Dirkx, D Mao… - Icarus, 2017 - Elsevier
We processed and analyzed one-way laser ranging data from International Laser Ranging
Service ground stations to NASA's Lunar Reconnaissance Orbiter (LRO), obtained from …