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Flight Test Evaluation of a New GPS Attitude Determination Algorithm

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2 Author(s)
Paiva Oliveira Leite, N. ; Grupo Especial de Ensaios em Voo, Sao Jose dos Campos ; Walter, F.

A new Global Positioning System (GPS) Attitude Determination Algorithm (GADA) is proposed, featuring the capability to keep its accuracy, even when the line-of-sight angle (LOS) of a given satellite vehicle (SV) is below the GPS horizontal antenna plane (HAP). The GADA model has been developed and evaluated through simulations and flight test campaigns, which comprised static and dynamic flight profiles, to best characterize the algorithm performance. As attitude reference a complete flight tests instrumentation (FTI) system was integrated into the testbed for the flight test campaign. The attitude measurements given by GADA and REQUEST algorithms are compared with those given by FTI (i.e., reference system). The results show that GADA accuracy is significantly better than that of REQUEST, for all flight conditions.

Published in:

Aerospace and Electronic Systems Magazine, IEEE  (Volume:22 ,  Issue: 12 )