From Pierre.Uhrich@obspm.fr Fri Mar 6 10:24 EST 1998
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Date: Fri, 06 Mar 1998 16:25:56 +0100
From: Pierre.Uhrich@obspm.fr
Subject: Response to call for participation in an IGS/BIPM pilot project
To: JIMR@Maia.usno.navy.mil, CTHOMAS@bipm.fr, FRANCOIS.TARIS@obspm.fr,
ANDRE.CAMPOS@obspm.fr
Message-Id: <98030616255594@opdaf1.obspm.fr>
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Status: RO
Dear Colleagues,
Please find hereafter the answer of the BNM-LPTF to the call for participation
in an IGS/BIPM pilot project.
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Response to CALL FOR PARTICIPATION in an
IGS/BIPM PILOT PROJECT TO STUDY ACCURATE TIME AND FREQUENCY
COMPARISONS USING GPS PHASE AND CODE MEASUREMENTS
Agency: BNM-LPTF
Observatoire de Paris
61 avenue de l'Observatoire
F-75014 PARIS
Contact persons: Dr Pierre UHRICH, Dr Francois TARIS
Phone: (33) 01.40.51.22.16
Fax: (33) 01.43.25.55.42
E-mail addresses: pierre.uhrich@obspm.fr
francois.taris@obspm.Fr
Areas of participation:
1) Deployment of GPS receivers: Yes
2) GPS data analysis: Yes
3) Analysis of instrumental delays: Yes
4) Time and frequency comparisons: Yes
Limitations on participation:
The BNM-LPTF does not possess a software for global geodetic processing
of GPS data.
Comments or suggestions:
1) For time and frequency applications, the BNM-LPTF finds that there is
a need for more details about the atomic clocks used as local oscillators in the
IGS stations. This request concerns for example:
- Is it a free running oscillator or a frequency steered standard ?
- Any information about the short and middle (< 2 d) term stability ?
- Is the local frequency standard the only reference for GPS data
collection, or is it the local oscillator of the GPS receiver steered on the
local frequency standard ?
2) The BNM-LPTF is also seequing informations about potential on-board
space GPS receivers data processing.
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