|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Time-Frequency Transfer through a 70 dB Free Space Channel: Towards Satellite-Ground Time Dissemination | | Qi Shen
; Jian-Yu Guan
; Ting Zeng
; Qi-Ming Lu
; Liang Huang
; Yuan Cao
; Jiu-Peng Chen
; Tian-Qi Tao
; Jin-Cai Wu
; Lei Hou
; Sheng-Kai Liao
; Ji-Gang Ren
; Juan Yin
; Jian-Jun Jia
; Hai-Feng Jiang
; Cheng-Zhi Peng
; Qiang Zhang
; Jian-Wei Pan
; | | Date: |
18 Mar 2020 | | Abstract: | Time and frequency transfer lies at the heart of the field of metrology.
Compared to current microwave dissemination such as GPS, optical domain
dissemination can provide more than one order of magnitude in terms of higher
accuracy, which allows for many applications such as the redefinition of the
second, tests of general relativity and fundamental quantum physics, precision
navigation and quantum communication. Although optical frequency transfer has
been demonstrated over thousand kilometers fiber lines, intercontinental time
comparison and synchronization still requires satellite free space optical time
and frequency transfer. Quite a few pioneering free space optical time and
frequency experiments have been implemented at the distance of tens kilometers
at ground level. However, there exists no detailed analysis or ground test to
prove the feasibility of satellite-based optical time-frequency transfer. Here,
we analyze the possibility of this system and then provide the first-step
ground test with high channel loss. We demonstrate the optical frequency
transfer with an instability of $10^{-18}$ level in 8,000 seconds across a
16-km free space channel with a loss of up to 70~dB, which is comparable with
the loss of a satellite-ground link at medium earth orbit (MEO) and
geostationary earth orbit (GEO). | | Source: | arXiv, 2003.8322 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER