Читать книгу Global Navigation Satellite Systems, Inertial Navigation, and Integration - Mohinder S. Grewal - Страница 54

Since the early days of satellite‐based navigation systems, they have operated independently and have been integrated with other radionavigation systems, as well as internal systems to increase the robustness of the PVT solution. While radionavigation systems, including GNSS, provide good accuracy, these types of systems may be vulnerable to interference and periods of unavailability. On the other hand, while inertial navigation systems are self‐contained, their accuracy degrades over time. The integration of these two complementary sensor systems enables the position navigation timing (PNT) engineer to implement a robust PVT solution for a variety of applications.