Print Email Facebook Twitter IRNSS/NavIC l5 attitude determination Title IRNSS/NavIC l5 attitude determination Author Zaminpardaz, Safoora (Curtin University) Teunissen, P.J.G. (TU Delft Mathematical Geodesy and Positioning; Curtin University) Nadarajah, Nandakumaran (Curtin University) Date 2017-02-01 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 Attitude determinationIndian Regional Navigation Satellite System (IRNSS)Integer carrier-phase ambiguity resolutionMC-LAMBDAMultivariate constrained integer least-squaresNavigation with Indian Constellation (NavIC) To reference this document use: http://resolver.tudelft.nl/uuid:f15bd42a-fcd2-43c2-a116-79fe7e1a7919 DOI https://doi.org/10.3390/s17020274 ISSN 1424-8220 Source Sensors, 17 (2) Part of collection Institutional Repository Document type journal article Rights © 2017 Safoora Zaminpardaz, P.J.G. Teunissen, Nandakumaran Nadarajah Files PDF sensors_17_00274_v2.pdf 5.29 MB Close viewer /islandora/object/uuid:f15bd42a-fcd2-43c2-a116-79fe7e1a7919/datastream/OBJ/view