FedSat Orbit Determination: Results From Daily GPS Flight Code Observations

Feng, Yanming, Zhou, Ning, & Enderle, Werner (2003) FedSat Orbit Determination: Results From Daily GPS Flight Code Observations. In 6th International Symposium of Satellite Navigation Technology and Applications, 22-25 July 2003, Melbourne.


The Australian Federation Satellite, FedSat, was successfully launched into a 780-km low-earth orbit on 14 December 2002. Since then, the onboard Blackjack GPS receiver has operated on a duty cycle basis, providing effective data sets at an average of 10 to 15 minutes per orbit with its only aft-looking antenna, which views a field of two-third of the hemisphere. This paper presents the technical description of the FedSat Orbit Determination and Tracking (FODT) software, which is used to perform FedSat orbit filtering and prediction on daily basis. We present results from GPS flight data sets of two periods: the very first 24 hour data collected on Day 364/02 and the very first data sets of 5 consecutive days in March 2003. The analysis is focused on the evaluation of the FedSat flight GPS data quality and the accuracy of orbit propagation solutions currently achievable with the FODT software. The results from the two data periods have shown that the FODT derived FedSat orbits from code measurements can be propagated forward 72 and 96 hours with the maximal orbit errors of 120m and 240m respectively, which will satisfy the precise pointing requirement for Ka-Band tracking. In general, these preliminary FedSat orbit determination results are considered encouraging and promising, given consideration of rather harsh FedSat observational environment.

Impact and interest:

Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

466 since deposited on 10 Jun 2004
24 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 160
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: FedSat, Orbit Determination, Low Earth Orbit (LEO), Global Positioning Systems, GPS
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Statement: Copyright 2003 (please consult author)
Deposited On: 10 Jun 2004 00:00
Last Modified: 29 Feb 2012 13:02

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page