engleski

Application of vertical acceleration measurements in inertial navigation systems

At the Faculty of transport and traffic engineering of the University Zagreb the idea of an optimal navigation system construction was conceived, primarily for air navigation. It was noted that based on several characteristics, the Inertial Navigation System (INS) has the highest development potential, in such a way that it can enable self-contained aircraft navigation. The problem of common INS in use today is that there is no INS that can guide an aircraft in space (3-D), but only in the horizontal plain (2-D). The problem has defined the research subject: To analyze the possibility of a 3-D INS model construction and to find a way to widen the scope of navigation from two to all three dimensions. The task is further to find the ways of measurement and the vertical acceleration measurement corrections, according to the state of technology development, which have the potential of achieving the criteria of needed precision and availability. The problem and the research subject have defined the hypothesis: To find out whether it is possible to construct a precise and dependable subsystem for measuring vertical acceleration, that could enable to widen the common INS from a 2-D to a 3-D system.

inertial navigation; 3D-INS; on-line measurements; Kalman filter

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