Single Antenna Attitude Determination for Fedsat with Improved Antenna Gain Patterns
The GPS receiver on FedSat is a single antenna unit which was supplied by NASA JPL and integrated on the satellite by the Queensland University of Technology (QUT) and other participants in the Cooperative Research Centre for Satellite Systems. The high-level objectives, for the GPS receiver on the FedSat mission, are to provide an orbit determination capability and an attitude determination capability, whilst operating within strict power budget requirements. The current baseline is a total of 30 minutes of operation per 100 minute orbit.
This paper presents the history of the attitude determination capability for FedSat and an outline of the antenna gain pattern tests performed for FedSat. These tests show the great impact that the spacecraft has on the measured antenna gain pattern. Extensive data collection and simulation of different antenna gain patterns was made using a GPS constellation simulator. The accuracy of the attitude determination problem results, are shown to be within 30 degrees for the signal to noise ratio (SNR) weighted approach and were improved to within 5 degrees when mapping of the SNR to elevation angle approach is taken. Recommendations for new improved approaches, in both the methodology and in the choice of antenna gain pattern are made.
Citation countsare sourced monthly fromand 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 theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloadsdisplays 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.
|Item Type:||Conference Paper|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100)|
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100) > Aerospace Engineering not elsewhere classified (090199)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Copyright Owner:||Copyright 2003 (please consult author)|
|Deposited On:||19 Dec 2005|
|Last Modified:||29 Feb 2012 23:02|
Repository Staff Only: item control page