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    GNSS-based attitude determination for remote sensing platforms

    Access Status
    Fulltext not available
    Authors
    Nadarajah, Nandakumaran
    Teunissen, Peter
    Odijk, Dennis
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Nadarajah, N. and Teunissen, P. and Odijk, D. 2011. GNSS-based attitude determination for remote sensing platforms, in Proceedings of the 32nd Asian Conference on Remote Sensing 2011, ACRS 2011, Oct 3-7 2011, pp. 17-22. Tapei, Taiwan: Asian Association on Remote Sensing.
    Source Title
    32nd Asian Conference on Remote Sensing 2011, ACRS 2011
    ISBN
    9781618394972
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/18216
    Collection
    • Curtin Research Publications
    Abstract

    Global Navigation Satellite Systems (GNSS)-based attitude determination is a valuable technique for the estimation of platform orientation. Precise attitude determination using multiple GNSS receivers/antennas mounted on a remote sensing platform relies on successful resolution of the carrier phase integer ambiguities. The LAMBDA method has proven to be an efficient method to solve integer least squares problems. This method is, however, only applicable to unconstrained and/or linearly constrained models, but not to quadratically constrained models such as the GNSS attitude model. For a set of GNSS antennas rigidly mounted on a platform, a number of nonlinear geometrical constraints can be exploited for the purpose of strengthening the underlying observation model and subsequently improving the capacity of fixing the correct set of integer ambiguities. In this contribution, we describe and test the Multivariate Constrained (MC-) LAMBDA method, which effectively makes use of the known antenna geometry. Reliable and instantaneous integer estimation is particularly a challenge for single-frequency applications with low cost GNSS receivers. With our field tests, we show the potential of stand-alone, unaided, single-frequency, single epoch attitude determination.

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