An earthmoving machine including a control system is disclosed. The
machine comprises first and second satellite navigation antennas mounted
in a longitudinal direction on the earthmoving machine. A third satellite
navigation antenna is mounted on a pole attached to an operational
element of the earthmoving machine. In one embodiment, the earthmoving
machine is a bulldozer and the operational element is a blade of the
bulldozer. The machine further comprises a gravity reference sensor and a
plurality of gyroscopes mounted on the machine. A computer processor
generates control signals based on sensor data received from the various
components. The disclosed system and method allows for dynamically stable
operation of the earthmoving machine at relatively fast speeds without
the development of unwanted oscillations.