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Block diagram of the INS working in the navigation coordinate system

The IMU is an underlying element of each INS. Sensors whose output is influenced only by the motion of the object, on which the IMU is placed, are regarded as primary sensors of the IMU. Sensors of angular velocity whose output signals after integrating are used for determining the orientation in space, and accelerometers whose output signals after precise compensating the gravitational acceleration and Coriolis force can be integrated for speed and position are the primary sensors in the inertial navigation. 4 Such an IMU has six degrees of freedom, which means that it enables measuring the translational and rotary motion in three orthogonal axes.

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Created Saturday, August 13, 2022
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Changed Saturday, August 13, 2022