IRNSS/NavIC l5 attitude determination

Zaminpardaz, S, Teunissen, P and Nadarajah, N 2017, 'IRNSS/NavIC l5 attitude determination', Sensors (Switzerland), vol. 17, no. 2, pp. 1-14.


Document type: Journal Article
Collection: Journal Articles

Title IRNSS/NavIC l5 attitude determination
Author(s) Zaminpardaz, S
Teunissen, P
Nadarajah, N
Year 2017
Journal name Sensors (Switzerland)
Volume number 17
Issue number 2
Start page 1
End page 14
Total pages 14
Publisher M D P I AG
Abstract The Indian Regional Navigation Satellite System (IRNSS) has recently (May 2016) become fully-operational and has been provided with the operational name of NavIC (Navigation with Indian Constellation). It has been developed by the Indian Space Research Organization (ISRO) with the objective of offering positioning, navigation and timing (PNT) to the users in its service area. This contribution provides for the first time an assessment of the IRNSS L5-signal capability to achieve instantaneous attitude determination on the basis of data collected in Perth, Australia. Our evaluations are conducted for both a linear array of two antennas and a planar array of three antennas. A pre-requisite for precise and fast IRNSS attitude determination is the successful resolution of the double-differenced (DD) integer carrier-phase ambiguities. In this contribution, we will compare the performances of different such methods, amongst which the unconstrained and the multivariate-constrained LAMBDA method for both linear and planar arrays. It is demonstrated that the instantaneous ambiguity success rates increase from 15% to 90% for the linear array and from 5% to close to 100% for the planar array, thus showing that standalone IRNSS can realize 24-h almost instantaneous precise attitude determination with heading and elevation standard deviations of 0.05 and 0.10 degrees, respectively.
Subject Navigation and Position Fixing
Keyword(s) Attitude determination
Indian Regional Navigation Satellite System (IRNSS)
Integer carrier-phase ambiguity resolution
MC-LAMBDA
Multivariate constrained integer least-squares
Navigation with Indian Constellation (NavIC)
DOI - identifier 10.3390/s17020274
Copyright notice © 2017 by the authors; licensee MDPI, Basel, Switzerland.
ISSN 1424-8220
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