S. Purivigraipong

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This paper presents an implementation of a simplified filtering estimator for satellite attitude determination using GPS (Global Positioning System) signals. The non-linear system of estimator was modelled using Euler angles parameterisation which applicable for real-time operation onboard-satellite. An approach was to keep a pitch state independent of roll(More)
This paper presents an operational approach for determining satellite attitude from carrier phase GPS (Global Positioning System) measurements. A conventional recursive least square (RLS) estimator was implemented without requiring spacecraft dynamics. The proposed approach can be applicable for general space missions, particularly for real-time operation(More)
This paper presents an approach to resolve integer ambiguity of GPS carrier phase difference between two antennas separated by the baseline length. An approached algorithm based on Gram-Schmidt Orthonormalisation associated with Genetic Algorithm (GA), is proposed for medium length baseline observations. The proposed approach was exploited to reduce the(More)
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