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Analysis of Attitude Determination Methods Using GPS Carrier Phase Measurements
Joint Authors
Baroni, Leandro
Kuga, Hélio Koiti
Source
Mathematical Problems in Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-19
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
If three or more GPS antennas are mounted properly on a platform and differences of GPS signals measurements are collected simultaneously, the baselines vectors between antennas can be determined and the platform orientation defined by these vectors can be calculated.
Thus, the prerequisite for attitude determination technique based on GPS is to calculate baselines between antennas to millimeter level of accuracy.
For accurate attitude solutions to be attained, carrier phase double differences are used as main type of measurements.
The use of carrier phase measurements leads to the problem of precise determination of the ambiguous integer number of cycles in the initial carrier phase (integer ambiguity).
In this work two algorithms (LSAST and LAMBDA) were implemented and tested for ambiguity resolution allowing accurate real-time attitude determination using measurements given by GPS receivers in coupled form.
Platform orientation was obtained using quaternions formulation, and the results showed that LSAST method performance is similar to LAMBDA as far as the number of epochs which are necessary to resolve ambiguities is concerned, but with processing time significantly higher.
The final result accuracy was similar for both methods, better than 0.1° to 0.2°, when baselines are considered in decoupled form.
American Psychological Association (APA)
Baroni, Leandro& Kuga, Hélio Koiti. 2012. Analysis of Attitude Determination Methods Using GPS Carrier Phase Measurements. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-1001740
Modern Language Association (MLA)
Baroni, Leandro& Kuga, Hélio Koiti. Analysis of Attitude Determination Methods Using GPS Carrier Phase Measurements. Mathematical Problems in Engineering No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-1001740
American Medical Association (AMA)
Baroni, Leandro& Kuga, Hélio Koiti. Analysis of Attitude Determination Methods Using GPS Carrier Phase Measurements. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-1001740
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1001740