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Absolute Calibration of Time Receivers with DLR's GPS/Galileo HW Simulator

Thölert, Steffen and Grunert, Ulrich and Denks, Holmer and Furthner, Johann (2008) Absolute Calibration of Time Receivers with DLR's GPS/Galileo HW Simulator. In: 39th Annual Precise Time and Time Interval Systems and Applications Meeting. 39th Precise Time and Time Interval (PTTI) Systems and Applications Meeting, 2007-11-26 - 2007-11-29, Long Beach, California (USA).

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Official URL: http://tycho.usno.navy.mil/ptti.html

Abstract

A usual way for time transfer between atomic clocks operated at different locations is the use of the well known GNSS Common View technique. This technique is based on time receivers measuring the time differences between the connected atomic clock and the GNSS satellite clocks. The obtained results can be used for time scale generation such as UTC or TAI. In order to produce a very accurate time scale from all provided time differences measured with different GNSS time receivers the accurate calibration of them is essential. In the last years two main methods for time receiver calibration were proposed. One is to compare the obtained time differences relative to a calibrated receiver. Following the second method one performs an absolute calibration of time receivers using a GPS HW simulator. In this paper the absolute calibration of time receivers with DLR’s GPS/Galileo HW simulator is analyzed and described in detail. The primary step is to calibrate the simulator itself. In this context the most important facts and values which have to be measured are explained. After the calibration of the simulator the receiver is fed with satellite signals generated by the simulator belonging to a standard GPS satellite constellation to determine the absolute offset of the receiver (internal delay) compared to the simulator output. Additionally the precision of a combined GPS/Galileo receiver for frequency transfer is investigated and determined.

Item URL in elib:https://elib.dlr.de/52332/
Document Type:Conference or Workshop Item (Paper)
Title:Absolute Calibration of Time Receivers with DLR's GPS/Galileo HW Simulator
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thölert, SteffenUNSPECIFIEDUNSPECIFIED
Grunert, UlrichUNSPECIFIEDUNSPECIFIED
Denks, HolmerUNSPECIFIEDUNSPECIFIED
Furthner, JohannUNSPECIFIEDUNSPECIFIED
Date:1 August 2008
Journal or Publication Title:39th Annual Precise Time and Time Interval Systems and Applications Meeting
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:GNSS, GPS, Time, Receiver, absolute calibration, Simulator
Event Title:39th Precise Time and Time Interval (PTTI) Systems and Applications Meeting
Event Location:Long Beach, California (USA)
Event Type:international Conference
Event Dates:2007-11-26 - 2007-11-29
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Grunert, Ulrich
Deposited On:12 Aug 2008
Last Modified:31 Jul 2019 19:21

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