Time Transfer by Laser Link: The T2L2 experiment on Jason 2

2006 IEEE International Frequency Control Symposium and Exposition Pub Date : 2006-06-04 DOI:10.1109/FREQ.2006.275486

P. Guillemot, K. Gasc, I. Petitbon, E. Samain, P. Vrancken, J. Weick, D. Albanese, F. Para, J. Torre

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引用次数: 19

Abstract

The new generation of optical time transfer (T2L2 - Time Transfer by Laser Link) under development at OCA and CNES will allow the synchronization of remote ultra stable clocks and the determination of their performances over intercontinental distances. The principle is based on the propagation of light pulses between the clocks that are to be synchronized. T2L2 is the follow-on mission to LASSO (LAser Synchronization from Stationary Orbit) with performances improved by two orders of magnitude. Expected T2L2 performances are in the 100 ps range for accuracy, with an ultimate stability better than 1ps over 1,000s and than 10ps over one day. After a short overview of the instrumental heritage and the historic course of the project up to today's acceptation on Jason 2, we will report on a ground experiment conducted by OCA permitting to envision a performance improvement of at least one order of magnitude as compared to the best time transfer techniques available. Then preliminary performance budgets for the T2L2 on Jason 2 mission will be given, based on measurements conducted by OCA and expected performances of the space instrument. We will finish with the status of the space instrument development and a summary of recently conducted measurements of the electronics breadboards performances

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激光时间传输:杰森2号上的T2L2实验

OCA和CNES正在开发的新一代光学时间传输(T2L2 -激光链路时间传输)将允许远程超稳定时钟的同步，并确定它们在洲际距离上的性能。原理是基于要同步的时钟之间光脉冲的传播。T2L2是LASSO(静止轨道激光同步)的后续任务，性能提高了两个数量级。预期的T2L2性能精度在100ps范围内，最终稳定性优于1000秒内的1ps和一天内的10ps。在对仪器遗产和项目的历史进程进行简短概述之后，直到今天在Jason 2上接受，我们将报告OCA进行的一项地面实验，该实验允许与现有的最佳时间转移技术相比，至少有一个数量级的性能改进。然后，根据OCA进行的测量和空间仪器的预期性能，将给出杰森2号任务中T2L2的初步性能预算。最后，我们将介绍空间仪器的发展现状，并总结最近对电子电路板性能进行的测量

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2006 IEEE International Frequency Control Symposium and Exposition

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