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C. Les-figures, 8 et C.9 représentent l'évolution des résidus de pseudodistances pour les satellites 17, 22 et 28 mesurés par le récepteur SafeDrive 1 au cours du trajet 2. Les valeurs maximales de ces résidus sont de 40 mètres pour le satellite 18, 30 mètres pour le satellite 22 et 24 mètres pour le satellite 28. Encore une fois, ces résidus montrent des zones de perturbations communes, 2000.

C. La-figure, 10 représente l'évolution du nombre de satellites visibles durant le trajet 2 par le récepteur PolaRx2 Par rapport au trajet 1 (figure C.2), le nombre de satellites visibles moyen est plus élevé mais est encore régulièrement inférieur à quatre. Par rapport aux récepteurs SafeDrive, durant le trajet 2, le PolaRx2 franchit plus régulièrement la limite de positionnement. La figure C.11 représente l'évolution du PDOP au cours de l'acquisition

C. Les-figures, 13 et C.14 représentent l'évolution des résidus de pseudodistance mesurés par le récepteur PolaRx2 pour les satellites 18, 22 et 28 durant le trajet 2 Comparés au trajet 1 (figure C.4), les résidus montrent des valeurs plus élevées et une plus forte variation de leur évolution. Les valeurs maximales pour ces trois satellites sont comprises entre 20 et 30 mètres