Patent ID: 6516283
Filing Date: 2003-02-04
Classification: G01C

Abstract:
A core inertial measurement unit, comprising:an angular rate producer producing X axis, Y axis and Z axis angular rate electrical signals; an acceleration producer producing X axis, Y axis and Z axis acceleration electrical signals; an angular increment and velocity increment producer converting said X axis, Y axis and Z axis angular rate electrical signals into three-axis digital angular increments and converting said X axis, Y axis and Z axis acceleration electrical signals into three-axis digital velocity increments; an Earth's magnetic field detector producing Earth's magnetic field vector measurements; and a position, attitude and heading processor connected with said angular rate producer, said acceleration producer and said Earth's magnetic field detector, so as to use said three-axis digital angular increments, said three-axis digital velocity increments and said position, attitude and heading angle measurements to compute motion measurements including position, attitude and heading angle measurements.