Abstract:

Auto-compensation with system rotating can effectively decrease the influence of inertial sensing elements’ drift on the navigation accuracy of an inertial navigation system with optical gyroscopes, and this makes highperformance and low-cost navigation possible. Formulae for the propagation of mathematical platform misalignment angles induced by mounting errors in rotating inertial navigation system with optical gyroscopes are deduced from the errorpropagation equation of the rotating inertial navigation system. On the basis of these formulae, analyses are made on the characteristics of navigation errors induced by mounting errors and conditions for the auto-compensation of mounting errors. These provide theoretical consults for the system design and performance analysis of the rotating inertial navigation system.