Testing a new multivariate GNSS carrier phase attitude determination method for remote sensing platforms

Details Testing a new multivariate GNSS carrier phase attitude determination method for remote sensing platforms Testing a new multivariate GNSS carrier phase attitude determination method for remote sensing platforms

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010adspr..46..118g&link_type=abstract

Advances in Space Research, Volume 46, Issue 2, p. 118-129.

Physics

2

Scientific paper

GNSS (Global Navigation Satellite Systems)-based attitude determination is an important field of study, since it is a valuable technique for the orientation estimation of remote sensing platforms. To achieve highly accurate angular estimates, the precise GNSS carrier phase observables must be employed. However, in order to take full advantage of the high precision, the unknown integer ambiguities of the carrier phase observables need to be resolved. This contribution presents a GNSS carrier phase-based attitude determination method that determines the integer ambiguities and attitude in an integral manner, thereby fully exploiting the known body geometry of the multi-antennae configuration. It is shown that this integral approach aids the ambiguity resolution process tremendously and strongly improves the capacity of fixing the correct set of integer ambiguities. In this contribution, the challenging scenario of single-epoch, single-frequency attitude determination is addressed. This guarantees a total independence from carrier phase slips and losses of lock, and it also does not require any a priori motion model for the platform. The method presented is a multivariate constrained version of the popular LAMBDA method and it is tested on data collected during an airborne remote sensing campaign.

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