NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Transatlantic 2.5 MChip/s Two-Way Satellite Time and Frequency Transfer with Surface Acoustic Wave Filters
Published
Author(s)
Victor S. Zhang, Thomas E. Parker, Joseph Achkar, Daniele Rovera
Abstract
From August 2010 to April 2011, NIST and OP conducted an experiment of using surface acoustic wave (SAW) filters in transatlantic two-way satellite time and frequency transfer (TWSTFT) with 2.5 MChip/s pseudo-random noise (PRN) codes. The SAW filters used in the experiment are 2.5 MHz band-pass filters with center frequency at 70 MHz. We evaluated the SAW filters. We studied time transfer instability of the filtered 2.5 MChip/s TWSTFT by comparisons to time transfer instability of the 1 MChip/s TWSTFT with and without the SAW filters. This paper presents the experiment results.
Proceedings Title
Proceedings of the 2011 Joint IEEE International Frequency Control Symposium and European Frequency and Time Forum
Conference Dates
May 1-5, 2011
Conference Location
San Francisco, CA
Pub Type
Conferences
Keywords
transatlantic TWSTFT, time and frequency transfer, SAW filter
Zhang, V.
, Parker, T.
, Achkar, J.
and Rovera, D.
(2011),
Transatlantic 2.5 MChip/s Two-Way Satellite Time and Frequency Transfer with Surface Acoustic Wave Filters, Proceedings of the 2011 Joint IEEE International Frequency Control Symposium and European Frequency and Time Forum, San Francisco, CA
(Accessed October 10, 2025)